Mladenović, I., Vorkapić, M., Pergal, M., Ivanov, T., Baltić, M., Obradov, M.,& Vasiljević-Radović, D.. (2023). Primena metodologije odzivnih površina (RSM) u cilju optimizacije eksperimentalnih parametara 3D-štampe i postizanja boljih mehaničkih performansi štampanih elemenata. 
University of Belgrade - Institute of Chemistry, Technology and Metallurgy..
https://hdl.handle.net/21.15107/rcub_cer_6931

Mladenović I, Vorkapić M, Pergal M, Ivanov T, Baltić M, Obradov M, Vasiljević-Radović D. Primena metodologije odzivnih površina (RSM) u cilju optimizacije eksperimentalnih parametara 3D-štampe i postizanja boljih mehaničkih performansi štampanih elemenata. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_6931 .

Mladenović, Ivana, Vorkapić, Miloš, Pergal, Marija, Ivanov, Toni, Baltić, Marija, Obradov, Marko, Vasiljević-Radović, Dana, "Primena metodologije odzivnih površina (RSM) u cilju optimizacije eksperimentalnih parametara 3D-štampe i postizanja boljih mehaničkih performansi štampanih elemenata" (2023),
https://hdl.handle.net/21.15107/rcub_cer_6931 .

TY  - CONF
AU  - Baltić, Marija
AU  - Ivanović, Milica
AU  - Tanović, Dragoljub
AU  - Vorkapić, Miloš
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7413
AB  - Biocomposite materials are a combination of two or more different biomaterials at the
macroscopic level, with competitive mechanical and insulation properties, relatively stable when
exposed to high temperatures and tailorable. In this paper, materials are with a vegetative part of
fungi (mycelium-mesh structure of hyphae) which are increasingly used to create biocomposites
with unique processing technology. The vegetative part of a fungus called mycelium, can serve as
a natural binder for products made of biocomposite and acts like a self-assembling adhesive by
digesting and adhering to the surface of specific organic matter. This paper presents the
development of mould technology to set the biocomposite structure and test its mechanical
characteristics. The primary purpose of the mould is to bring the loose natural material into a
solid preparation following the standards ASTM D7250 and ASTM D1037, which include testing
the technologically prepared and hardened sample for tensile and pressure. Development and
moulding of biocomposite are the technological processes of drying after sowing mycelium so a
variant of the mould with a perforated upper part was used to harden the samples thoroughly.
PB  - Serbian Society of Mechanics
C3  - Proceedings - 9th International Congress of the Serbian Society of Mechanics, ICSSM 2023, July 5 - 7, Vrnjačka Banja, Serbia
T1  - Development and mould technology for biocomposite structures (Application for thermoinsulated bio plates)
SP  - 448
EP  - 449
UR  - https://hdl.handle.net/21.15107/rcub_cer_7413
ER  - 

@conference{
author = "Baltić, Marija and Ivanović, Milica and Tanović, Dragoljub and Vorkapić, Miloš",
year = "2023",
abstract = "Biocomposite materials are a combination of two or more different biomaterials at the
macroscopic level, with competitive mechanical and insulation properties, relatively stable when
exposed to high temperatures and tailorable. In this paper, materials are with a vegetative part of
fungi (mycelium-mesh structure of hyphae) which are increasingly used to create biocomposites
with unique processing technology. The vegetative part of a fungus called mycelium, can serve as
a natural binder for products made of biocomposite and acts like a self-assembling adhesive by
digesting and adhering to the surface of specific organic matter. This paper presents the
development of mould technology to set the biocomposite structure and test its mechanical
characteristics. The primary purpose of the mould is to bring the loose natural material into a
solid preparation following the standards ASTM D7250 and ASTM D1037, which include testing
the technologically prepared and hardened sample for tensile and pressure. Development and
moulding of biocomposite are the technological processes of drying after sowing mycelium so a
variant of the mould with a perforated upper part was used to harden the samples thoroughly.",
publisher = "Serbian Society of Mechanics",
journal = "Proceedings - 9th International Congress of the Serbian Society of Mechanics, ICSSM 2023, July 5 - 7, Vrnjačka Banja, Serbia",
title = "Development and mould technology for biocomposite structures (Application for thermoinsulated bio plates)",
pages = "448-449",
url = "https://hdl.handle.net/21.15107/rcub_cer_7413"
}

Baltić, M., Ivanović, M., Tanović, D.,& Vorkapić, M.. (2023). Development and mould technology for biocomposite structures (Application for thermoinsulated bio plates). in Proceedings - 9th International Congress of the Serbian Society of Mechanics, ICSSM 2023, July 5 - 7, Vrnjačka Banja, Serbia
Serbian Society of Mechanics., 448-449.
https://hdl.handle.net/21.15107/rcub_cer_7413

Baltić M, Ivanović M, Tanović D, Vorkapić M. Development and mould technology for biocomposite structures (Application for thermoinsulated bio plates). in Proceedings - 9th International Congress of the Serbian Society of Mechanics, ICSSM 2023, July 5 - 7, Vrnjačka Banja, Serbia. 2023;:448-449.
https://hdl.handle.net/21.15107/rcub_cer_7413 .

Baltić, Marija, Ivanović, Milica, Tanović, Dragoljub, Vorkapić, Miloš, "Development and mould technology for biocomposite structures (Application for thermoinsulated bio plates)" in Proceedings - 9th International Congress of the Serbian Society of Mechanics, ICSSM 2023, July 5 - 7, Vrnjačka Banja, Serbia (2023):448-449,
https://hdl.handle.net/21.15107/rcub_cer_7413 .

TY  - CONF
AU  - Baltić, Marija
AU  - Vorkapić, Miloš
AU  - Simonović, Aleksandar
AU  - Ivanov, Toni
AU  - Tanović, Dragoljub
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6364
AB  - The utilization of biomaterials with mycelia as a stabilizing agent is gaining popularity in the fields of construction and architecture, offering a sustainable solution aligned with the principles of the circular economy. Interdisciplinary research involving biologists, technologists, and engineers is necessary to advance this field where science, art and design converge. These biomaterials contribute to energy reduction and cost-effectiveness, utilizing readily available and recyclable raw materials. Mycelium-based blocks have shown to be more affordable than traditional cement and gypsum blocks while significantly reducing CO2 emissions. The mycelium network, formed by hyphae, can be cultivated into a solid material, providing a defined technological process. This study focusses on performing 3-point bending testing on moulded specimens using additive technology PLA material, following the ASTM D1037 standard. After the growth of mycelium and the formation of the test tube-shaped structure, the samples are dried and characterized to enchance their mechanical characteristics.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
T1  - Assembling biomaterial specimens in a mould made of thermoplastic polymer: 3-point bending test
SP  - 28
EP  - 28
UR  - https://hdl.handle.net/21.15107/rcub_cer_6364
ER  - 

@conference{
author = "Baltić, Marija and Vorkapić, Miloš and Simonović, Aleksandar and Ivanov, Toni and Tanović, Dragoljub",
year = "2023",
abstract = "The utilization of biomaterials with mycelia as a stabilizing agent is gaining popularity in the fields of construction and architecture, offering a sustainable solution aligned with the principles of the circular economy. Interdisciplinary research involving biologists, technologists, and engineers is necessary to advance this field where science, art and design converge. These biomaterials contribute to energy reduction and cost-effectiveness, utilizing readily available and recyclable raw materials. Mycelium-based blocks have shown to be more affordable than traditional cement and gypsum blocks while significantly reducing CO2 emissions. The mycelium network, formed by hyphae, can be cultivated into a solid material, providing a defined technological process. This study focusses on performing 3-point bending testing on moulded specimens using additive technology PLA material, following the ASTM D1037 standard. After the growth of mycelium and the formation of the test tube-shaped structure, the samples are dried and characterized to enchance their mechanical characteristics.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia",
title = "Assembling biomaterial specimens in a mould made of thermoplastic polymer: 3-point bending test",
pages = "28-28",
url = "https://hdl.handle.net/21.15107/rcub_cer_6364"
}

Baltić, M., Vorkapić, M., Simonović, A., Ivanov, T.,& Tanović, D.. (2023). Assembling biomaterial specimens in a mould made of thermoplastic polymer: 3-point bending test. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 28-28.
https://hdl.handle.net/21.15107/rcub_cer_6364

Baltić M, Vorkapić M, Simonović A, Ivanov T, Tanović D. Assembling biomaterial specimens in a mould made of thermoplastic polymer: 3-point bending test. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia. 2023;:28-28.
https://hdl.handle.net/21.15107/rcub_cer_6364 .

Baltić, Marija, Vorkapić, Miloš, Simonović, Aleksandar, Ivanov, Toni, Tanović, Dragoljub, "Assembling biomaterial specimens in a mould made of thermoplastic polymer: 3-point bending test" in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia (2023):28-28,
https://hdl.handle.net/21.15107/rcub_cer_6364 .

TY  - CONF
AU  - Baltić, Marija
AU  - Ivanović, Milica
AU  - Stamenković, Igor
AU  - Vorkapić, Miloš
AU  - Simonović, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6828
AB  - The manufacturing and application of biocomposites are remarkable achievements in replacing conventional non-biodegradable materials. In general, biocomposites are made up of biopolymers and bio-based reinforcing agents. Biofibres are also the main constituents of biocomposites, which are generated from biological entities such as crop fibres (cotton, flax, mycelium of fungi, hemp), recycled wood, wastepaper, agro-based by-products or regenerated cellulose fibre. In this paper, a mould intended for biocomposites based on mycelium and an adequate substrate is tested. The primary purpose of the mould is to bring the loose natural material into a solid preparation following the standards ASTM D7250 and ASTM D1037, which include testing the technologically prepared and hardened sample for tensile and pressure. Development and moulding of biocomposite are the technological processes of drying after sowing mycelium so that a variant of the mould with a perforated upper part was used to harden the samples thoroughly. In the mould, realization is used PLA thermoplastic filaments. Mould was made as an assembly of two parts, and its shape is like a dog bone, according to the mentioned standards. This polymer enclosure is helpful for other biocomposite structures (a mixture of different fungi species and adequate substrates).
AB  - Proizvodnja i primena biokompozita je značajno doprinela smanjenju upotrebe nebiorazgradivih materijala. U opštem smislu, biokompoziti se sastoje od biorazgradivih prirodnih polimera (biopolimera) i ojačavajuće faze-biovlakana. Biovlakna su glavni sastojci ovih materijala i mogu biti različitog prirodnog porekla (pamuk, lan, konoplja, micelije gljiva, reciklirano drvo, agroproizvodi ili regenerisana celulozna vlakna). U ovom radu, testiran je i razvijen kalup za biokompozite na bazi micelijuma i odgovarajućeg supstrata (pšenične slame). Osnovna namena kalupa je priprema i očvršćavanje bio materijala da bi bilo omugućeno ispitivanje u skladu sa standardima ASTM D7250 i ASTM D1037, koji su namenjeni ispitivanju uzoraka na istezanje i pritisak. Izrada i 
oblikovanje biokompozita predstavljaju tehnološke postupke koji se sprovode u cilju sušenja i smanjenja procenta vlage nakon zasejavanja, pri čemu je gornji deo perforiran zbog isparavanja i što boljeg očvršćavanja uzoraka. Za proizvodnju kalupa upotrebljen je PLA termoplastični filament. 
Kalup je izrađen kao dvodelni sklop, oblika “dog bone” u skladu sa pomenutim standardima. 
Ovako pripremljen i sklopljen kalup je moguće primeniti i za ispitivanje ostalih biokompozitnih 
struktura (mešavina različitih vrsta fungi i odgovarajućih supstrata).
PB  - Union of Mechanical and Electrical Engineers and Technicains of Serbia (SMEITS)
PB  - Belgrade : Society for Renewable Electrical Power Sources
C3  - Proceedings - 11th International Conference on Renewable Electrical Power Sources, ICREPS 2023, November 02-03, 2023, Belgrade
T1  - Polymer mould manufacturing for tensile testing of biocomposite materials
T1  - Postupak izrade polimernog kalupa za ispitivanje na istezanje biokompozitnih materijala
SP  - 421
EP  - 426
UR  - https://hdl.handle.net/21.15107/rcub_cer_6828
ER  - 

@conference{
author = "Baltić, Marija and Ivanović, Milica and Stamenković, Igor and Vorkapić, Miloš and Simonović, Aleksandar",
year = "2023",
abstract = "The manufacturing and application of biocomposites are remarkable achievements in replacing conventional non-biodegradable materials. In general, biocomposites are made up of biopolymers and bio-based reinforcing agents. Biofibres are also the main constituents of biocomposites, which are generated from biological entities such as crop fibres (cotton, flax, mycelium of fungi, hemp), recycled wood, wastepaper, agro-based by-products or regenerated cellulose fibre. In this paper, a mould intended for biocomposites based on mycelium and an adequate substrate is tested. The primary purpose of the mould is to bring the loose natural material into a solid preparation following the standards ASTM D7250 and ASTM D1037, which include testing the technologically prepared and hardened sample for tensile and pressure. Development and moulding of biocomposite are the technological processes of drying after sowing mycelium so that a variant of the mould with a perforated upper part was used to harden the samples thoroughly. In the mould, realization is used PLA thermoplastic filaments. Mould was made as an assembly of two parts, and its shape is like a dog bone, according to the mentioned standards. This polymer enclosure is helpful for other biocomposite structures (a mixture of different fungi species and adequate substrates)., Proizvodnja i primena biokompozita je značajno doprinela smanjenju upotrebe nebiorazgradivih materijala. U opštem smislu, biokompoziti se sastoje od biorazgradivih prirodnih polimera (biopolimera) i ojačavajuće faze-biovlakana. Biovlakna su glavni sastojci ovih materijala i mogu biti različitog prirodnog porekla (pamuk, lan, konoplja, micelije gljiva, reciklirano drvo, agroproizvodi ili regenerisana celulozna vlakna). U ovom radu, testiran je i razvijen kalup za biokompozite na bazi micelijuma i odgovarajućeg supstrata (pšenične slame). Osnovna namena kalupa je priprema i očvršćavanje bio materijala da bi bilo omugućeno ispitivanje u skladu sa standardima ASTM D7250 i ASTM D1037, koji su namenjeni ispitivanju uzoraka na istezanje i pritisak. Izrada i 
oblikovanje biokompozita predstavljaju tehnološke postupke koji se sprovode u cilju sušenja i smanjenja procenta vlage nakon zasejavanja, pri čemu je gornji deo perforiran zbog isparavanja i što boljeg očvršćavanja uzoraka. Za proizvodnju kalupa upotrebljen je PLA termoplastični filament. 
Kalup je izrađen kao dvodelni sklop, oblika “dog bone” u skladu sa pomenutim standardima. 
Ovako pripremljen i sklopljen kalup je moguće primeniti i za ispitivanje ostalih biokompozitnih 
struktura (mešavina različitih vrsta fungi i odgovarajućih supstrata).",
publisher = "Union of Mechanical and Electrical Engineers and Technicains of Serbia (SMEITS), Belgrade : Society for Renewable Electrical Power Sources",
journal = "Proceedings - 11th International Conference on Renewable Electrical Power Sources, ICREPS 2023, November 02-03, 2023, Belgrade",
title = "Polymer mould manufacturing for tensile testing of biocomposite materials, Postupak izrade polimernog kalupa za ispitivanje na istezanje biokompozitnih materijala",
pages = "421-426",
url = "https://hdl.handle.net/21.15107/rcub_cer_6828"
}

Baltić, M., Ivanović, M., Stamenković, I., Vorkapić, M.,& Simonović, A.. (2023). Polymer mould manufacturing for tensile testing of biocomposite materials. in Proceedings - 11th International Conference on Renewable Electrical Power Sources, ICREPS 2023, November 02-03, 2023, Belgrade
Union of Mechanical and Electrical Engineers and Technicains of Serbia (SMEITS)., 421-426.
https://hdl.handle.net/21.15107/rcub_cer_6828

Baltić M, Ivanović M, Stamenković I, Vorkapić M, Simonović A. Polymer mould manufacturing for tensile testing of biocomposite materials. in Proceedings - 11th International Conference on Renewable Electrical Power Sources, ICREPS 2023, November 02-03, 2023, Belgrade. 2023;:421-426.
https://hdl.handle.net/21.15107/rcub_cer_6828 .

Baltić, Marija, Ivanović, Milica, Stamenković, Igor, Vorkapić, Miloš, Simonović, Aleksandar, "Polymer mould manufacturing for tensile testing of biocomposite materials" in Proceedings - 11th International Conference on Renewable Electrical Power Sources, ICREPS 2023, November 02-03, 2023, Belgrade (2023):421-426,
https://hdl.handle.net/21.15107/rcub_cer_6828 .

TY  - CONF
AU  - Baltić, Marija
AU  - Ivanović, Milica
AU  - Tanović, Dragoljub
AU  - Vorkapić, Miloš
AU  - Mladenović, Ivana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7055
AB  - This paper presents the static testing of the composite material's mechanical  characteristics. An overview of the standards is made by which various tests are performed, and then  an analysis of the results of the parameters obtained by the conventional method-stretching and optical  (DIC system-bending) of carbon epoxy composite structures is given. These results represented the  basis for the preparation and further application of biocomposite materials; that is, the testing  procedure will be performed identically on composites containing mycelia. The mould for pressing  biomaterial connected with mycelium is made of two parts. The primary purpose of the mould is to  bring the loose natural material into a solid preparation following the standards ASTM D3039 and  ASTM D7078, which include testing the technologically prepared and hardened sample for bending  and shearing.
PB  - International Sustainable Aviation and Energy  Research Society
C3  - International Symposium on Aircraft  Technology ISATECH’22, Abstract Book
T1  - Procedures in Testing the Mechanical Characteristics of  Composite Structures and the Possibility of Application to  Biodegradable Materials: An Overview
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_cer_7055
ER  - 

@conference{
author = "Baltić, Marija and Ivanović, Milica and Tanović, Dragoljub and Vorkapić, Miloš and Mladenović, Ivana",
year = "2023",
abstract = "This paper presents the static testing of the composite material's mechanical  characteristics. An overview of the standards is made by which various tests are performed, and then  an analysis of the results of the parameters obtained by the conventional method-stretching and optical  (DIC system-bending) of carbon epoxy composite structures is given. These results represented the  basis for the preparation and further application of biocomposite materials; that is, the testing  procedure will be performed identically on composites containing mycelia. The mould for pressing  biomaterial connected with mycelium is made of two parts. The primary purpose of the mould is to  bring the loose natural material into a solid preparation following the standards ASTM D3039 and  ASTM D7078, which include testing the technologically prepared and hardened sample for bending  and shearing.",
publisher = "International Sustainable Aviation and Energy  Research Society",
journal = "International Symposium on Aircraft  Technology ISATECH’22, Abstract Book",
title = "Procedures in Testing the Mechanical Characteristics of  Composite Structures and the Possibility of Application to  Biodegradable Materials: An Overview",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_cer_7055"
}

Baltić, M., Ivanović, M., Tanović, D., Vorkapić, M.,& Mladenović, I.. (2023). Procedures in Testing the Mechanical Characteristics of  Composite Structures and the Possibility of Application to  Biodegradable Materials: An Overview. in International Symposium on Aircraft  Technology ISATECH’22, Abstract Book
International Sustainable Aviation and Energy  Research Society., 44-44.
https://hdl.handle.net/21.15107/rcub_cer_7055

Baltić M, Ivanović M, Tanović D, Vorkapić M, Mladenović I. Procedures in Testing the Mechanical Characteristics of  Composite Structures and the Possibility of Application to  Biodegradable Materials: An Overview. in International Symposium on Aircraft  Technology ISATECH’22, Abstract Book. 2023;:44-44.
https://hdl.handle.net/21.15107/rcub_cer_7055 .

Baltić, Marija, Ivanović, Milica, Tanović, Dragoljub, Vorkapić, Miloš, Mladenović, Ivana, "Procedures in Testing the Mechanical Characteristics of  Composite Structures and the Possibility of Application to  Biodegradable Materials: An Overview" in International Symposium on Aircraft  Technology ISATECH’22, Abstract Book (2023):44-44,
https://hdl.handle.net/21.15107/rcub_cer_7055 .

Vorkapić, M., Mladenović, I., Popović, B., Ivanov, T., Baltić, M., Simonović, A.,& Ćoćkalo, D.. (2023). Primena aditivnih tehnologija u cirkularnoj proizvodnji za realizaciju prototipa kućišta elektronike od biorazgradivih materijala. 
Универзитет у Београду - Институт за хемију технологију и металургију – Институт од националног значаја за Републику Србију..
https://hdl.handle.net/21.15107/rcub_cer_6655

Vorkapić M, Mladenović I, Popović B, Ivanov T, Baltić M, Simonović A, Ćoćkalo D. Primena aditivnih tehnologija u cirkularnoj proizvodnji za realizaciju prototipa kućišta elektronike od biorazgradivih materijala. 2023;.
https://hdl.handle.net/21.15107/rcub_cer_6655 .

Vorkapić, Miloš, Mladenović, Ivana, Popović, Bogdan, Ivanov, Toni, Baltić, Marija, Simonović, Aleksandar, Ćoćkalo, Dragan, "Primena aditivnih tehnologija u cirkularnoj proizvodnji za realizaciju prototipa kućišta elektronike od biorazgradivih materijala" (2023),
https://hdl.handle.net/21.15107/rcub_cer_6655 .

TY  - JOUR
AU  - Baltić, Marija
AU  - Vorkapić, Miloš
AU  - Ivanović, Milica
AU  - Tanović, Dragoljub
AU  - Mladenović, Ivana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6367
AB  - Composite materials and structures are widely used and applied in many
industries owing to their advantages, such as satisfactory stiffness-to-mass ratio
and corrosion resistance. However, during their operating life, responsible parts
subject to complex loads may change and their properties might deteriorate. To
ensure structural integrity it is necessary to monitor and regularly check the
performance of composite structures. This paper investigates the change of
frequency characteristics of two rectangular composite (carbon-epoxy) plates after
inflicting structural damage. Following the necessary preparation of the structure's
upper surfaces by white-and-black stochastic pattern, the responses (free
vibratory movement) of structures to momentary excitation were recorded by an
optical, contactless 3D digital image correlation (DIC) system that contains a set of
ultrafast cameras. In order to determine the natural frequencies of the plates, the
recorded time-domain responses were post-processed, i.e. converted to the
frequency domain by fast Fourier transform (FFT). The reduction in values of
natural frequencies is observed on the damaged structures. The performed
experiments demonstrate the applicability of the DIC method in the structural
health monitoring of composite parts.
PB  - Belgrade, Serbia : Balkan Scientific Centre
T2  - Tribology and Materials Journal
T1  - Modal analysis of composite plates: Digital image correlation method application
VL  - 2
IS  - 2
SP  - 62
EP  - 67
DO  - 10.46793/tribomat.2023.010
ER  - 

@article{
author = "Baltić, Marija and Vorkapić, Miloš and Ivanović, Milica and Tanović, Dragoljub and Mladenović, Ivana",
year = "2023",
abstract = "Composite materials and structures are widely used and applied in many
industries owing to their advantages, such as satisfactory stiffness-to-mass ratio
and corrosion resistance. However, during their operating life, responsible parts
subject to complex loads may change and their properties might deteriorate. To
ensure structural integrity it is necessary to monitor and regularly check the
performance of composite structures. This paper investigates the change of
frequency characteristics of two rectangular composite (carbon-epoxy) plates after
inflicting structural damage. Following the necessary preparation of the structure's
upper surfaces by white-and-black stochastic pattern, the responses (free
vibratory movement) of structures to momentary excitation were recorded by an
optical, contactless 3D digital image correlation (DIC) system that contains a set of
ultrafast cameras. In order to determine the natural frequencies of the plates, the
recorded time-domain responses were post-processed, i.e. converted to the
frequency domain by fast Fourier transform (FFT). The reduction in values of
natural frequencies is observed on the damaged structures. The performed
experiments demonstrate the applicability of the DIC method in the structural
health monitoring of composite parts.",
publisher = "Belgrade, Serbia : Balkan Scientific Centre",
journal = "Tribology and Materials Journal",
title = "Modal analysis of composite plates: Digital image correlation method application",
volume = "2",
number = "2",
pages = "62-67",
doi = "10.46793/tribomat.2023.010"
}

Baltić, M., Vorkapić, M., Ivanović, M., Tanović, D.,& Mladenović, I.. (2023). Modal analysis of composite plates: Digital image correlation method application. in Tribology and Materials Journal
Belgrade, Serbia : Balkan Scientific Centre., 2(2), 62-67.
https://doi.org/10.46793/tribomat.2023.010

Baltić M, Vorkapić M, Ivanović M, Tanović D, Mladenović I. Modal analysis of composite plates: Digital image correlation method application. in Tribology and Materials Journal. 2023;2(2):62-67.
doi:10.46793/tribomat.2023.010 .

Baltić, Marija, Vorkapić, Miloš, Ivanović, Milica, Tanović, Dragoljub, Mladenović, Ivana, "Modal analysis of composite plates: Digital image correlation method application" in Tribology and Materials Journal, 2, no. 2 (2023):62-67,
https://doi.org/10.46793/tribomat.2023.010 . .

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Živojinović, Danijela
AU  - Kreculj, Dragan
AU  - Ivanov, Toni
AU  - Baltić, Marija
AU  - Simonović, Aleksandar
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5887
AB  - Reverse engineering (RE) aims to design a new replacement part based on
the existing part. The goal is to perform a quality reproduction of the
physical part with the best possible mechanical characteristics aiming to
find optimal solutions regarding the shape and dimensions of the part. The
procedure is implemented through a series of steps: creating a digital 3D
model, improving model parameters, and realizing products using additive
technologies. In this paper, a review and implementation of the funda–
mental methodologies of RE were carried out on the example of a damaged
protective cover with an unknown geometry and material essential for the
function of a discontinued device with no technical documentation and
spare parts. An optical scanning method, 3D CAD, FEA, and additive
manufacturing were used to realize the reproduced part. It was shown that
by utilizing RE the lifecycle of the device could be significantly extended
with minimal cost.
AB  - Реверзбилни инжењеринг (РЕ) има за циљ да
пројектује нови заменски део на основу постојећег
дела. Поступак се спроводи кроз низ корака: израда
дигиталног 3Д модела, побољшање и оптимизација
параметара модела и реализација производа
применом адитивних технологија. Циљ је да се
изврши квалитетна репродукција физичког дела са
најбољим могућим механичким карактеристикама у
циљу проналажења оптималних решења у погледу
облика и димензија дела. У овом раду је извршен
преглед и имплементација основних методологија
РЕ на примеру оштећеног заштитног поклопца
непознате геометрије и материјала од суштинског
значаја за функционисање уређаја који се не
производи, а при томе нема расположиве техничке
документације и резервних делова. У реализацији
репродукованог дела коришћена је метода оптичког
скенирања, 3D CAD, FEA и адитивна производња.
Показало се да се коришћењем РE може значајно
продужити животни циклус уређаја уз минималне
трошкове.
PB  - Beograd : Mašinski fakultet
T2  - FME Transactions
T1  - Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts
T1  - Примена адитивне технологије и реверзибилног инжењерства у реализацији оштећених застарелих делова
VL  - 51
IS  - 1
SP  - 31
EP  - 38
DO  - 10.5937/fme2301031V
ER  - 

@article{
author = "Vorkapić, Miloš and Živojinović, Danijela and Kreculj, Dragan and Ivanov, Toni and Baltić, Marija and Simonović, Aleksandar",
year = "2023",
abstract = "Reverse engineering (RE) aims to design a new replacement part based on
the existing part. The goal is to perform a quality reproduction of the
physical part with the best possible mechanical characteristics aiming to
find optimal solutions regarding the shape and dimensions of the part. The
procedure is implemented through a series of steps: creating a digital 3D
model, improving model parameters, and realizing products using additive
technologies. In this paper, a review and implementation of the funda–
mental methodologies of RE were carried out on the example of a damaged
protective cover with an unknown geometry and material essential for the
function of a discontinued device with no technical documentation and
spare parts. An optical scanning method, 3D CAD, FEA, and additive
manufacturing were used to realize the reproduced part. It was shown that
by utilizing RE the lifecycle of the device could be significantly extended
with minimal cost., Реверзбилни инжењеринг (РЕ) има за циљ да
пројектује нови заменски део на основу постојећег
дела. Поступак се спроводи кроз низ корака: израда
дигиталног 3Д модела, побољшање и оптимизација
параметара модела и реализација производа
применом адитивних технологија. Циљ је да се
изврши квалитетна репродукција физичког дела са
најбољим могућим механичким карактеристикама у
циљу проналажења оптималних решења у погледу
облика и димензија дела. У овом раду је извршен
преглед и имплементација основних методологија
РЕ на примеру оштећеног заштитног поклопца
непознате геометрије и материјала од суштинског
значаја за функционисање уређаја који се не
производи, а при томе нема расположиве техничке
документације и резервних делова. У реализацији
репродукованог дела коришћена је метода оптичког
скенирања, 3D CAD, FEA и адитивна производња.
Показало се да се коришћењем РE може значајно
продужити животни циклус уређаја уз минималне
трошкове.",
publisher = "Beograd : Mašinski fakultet",
journal = "FME Transactions",
title = "Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts, Примена адитивне технологије и реверзибилног инжењерства у реализацији оштећених застарелих делова",
volume = "51",
number = "1",
pages = "31-38",
doi = "10.5937/fme2301031V"
}

Vorkapić, M., Živojinović, D., Kreculj, D., Ivanov, T., Baltić, M.,& Simonović, A.. (2023). Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts. in FME Transactions
Beograd : Mašinski fakultet., 51(1), 31-38.
https://doi.org/10.5937/fme2301031V

Vorkapić M, Živojinović D, Kreculj D, Ivanov T, Baltić M, Simonović A. Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts. in FME Transactions. 2023;51(1):31-38.
doi:10.5937/fme2301031V .

Vorkapić, Miloš, Živojinović, Danijela, Kreculj, Dragan, Ivanov, Toni, Baltić, Marija, Simonović, Aleksandar, "Application of Additive Technology and Reverse Engineering in the Realization of Damaged Obsolete Parts" in FME Transactions, 51, no. 1 (2023):31-38,
https://doi.org/10.5937/fme2301031V . .

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Mladenović, Ivana
AU  - Pergal, Marija
AU  - Ivanov, Toni
AU  - Baltić, Marija
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5379
AB  - Three-dimensional printed plastic products developed through fused deposition
modelling (FDM) take long-term mechanical loading in most industrial prototypes.
This article focuses on the impact of the 3D printing parameters, type of thermal
treatment and variation of characteristic dimensions of standard specimens on the
tensile properties of poly(lactic acid) (PLA) material. Two mediums were used for
thermal treatment: NaCl powder and plaster. The specimens immersed in NaCl
powder were heated to the melting temperature of the filament (200 °C), while
the processing of the plastered specimens was performed at a temperature of
100 °C. After treatment, the specimens were cooled at room temperature (25 °C),
and the dimensions of the annealed and untreated specimens were controlled.
The tensile test of the specimens was performed on the universal test machine.
The response surface methodology (RSM) is employed to predict the tensile stress
by undertaking input parameters. The analysis of variance (ANOVA) results
revealed that the untreated specimens, orientation – 45/45 and layer thickness of
0.1 mm had the highest tensile stress value. Thermal treatment in plaster showed
a significant increase in tensile strength, while the best specimens were obtained
after treatment in NaCl, and all refer to the –45/45 (0.1 mm) orientation.
PB  - Belgrade, Serbia : Balkan Scientific Centre
T2  - Tribology and Materials
T1  - Optimisation of tensile stress of poly(lactic acid) 3D printed materials using response surface methodology
VL  - 1
IS  - 2
SP  - 70
EP  - 80
DO  - 10.46793/tribomat.2022.009
ER  - 

@article{
author = "Vorkapić, Miloš and Mladenović, Ivana and Pergal, Marija and Ivanov, Toni and Baltić, Marija",
year = "2022",
abstract = "Three-dimensional printed plastic products developed through fused deposition
modelling (FDM) take long-term mechanical loading in most industrial prototypes.
This article focuses on the impact of the 3D printing parameters, type of thermal
treatment and variation of characteristic dimensions of standard specimens on the
tensile properties of poly(lactic acid) (PLA) material. Two mediums were used for
thermal treatment: NaCl powder and plaster. The specimens immersed in NaCl
powder were heated to the melting temperature of the filament (200 °C), while
the processing of the plastered specimens was performed at a temperature of
100 °C. After treatment, the specimens were cooled at room temperature (25 °C),
and the dimensions of the annealed and untreated specimens were controlled.
The tensile test of the specimens was performed on the universal test machine.
The response surface methodology (RSM) is employed to predict the tensile stress
by undertaking input parameters. The analysis of variance (ANOVA) results
revealed that the untreated specimens, orientation – 45/45 and layer thickness of
0.1 mm had the highest tensile stress value. Thermal treatment in plaster showed
a significant increase in tensile strength, while the best specimens were obtained
after treatment in NaCl, and all refer to the –45/45 (0.1 mm) orientation.",
publisher = "Belgrade, Serbia : Balkan Scientific Centre",
journal = "Tribology and Materials",
title = "Optimisation of tensile stress of poly(lactic acid) 3D printed materials using response surface methodology",
volume = "1",
number = "2",
pages = "70-80",
doi = "10.46793/tribomat.2022.009"
}

Vorkapić, M., Mladenović, I., Pergal, M., Ivanov, T.,& Baltić, M.. (2022). Optimisation of tensile stress of poly(lactic acid) 3D printed materials using response surface methodology. in Tribology and Materials
Belgrade, Serbia : Balkan Scientific Centre., 1(2), 70-80.
https://doi.org/10.46793/tribomat.2022.009

Vorkapić M, Mladenović I, Pergal M, Ivanov T, Baltić M. Optimisation of tensile stress of poly(lactic acid) 3D printed materials using response surface methodology. in Tribology and Materials. 2022;1(2):70-80.
doi:10.46793/tribomat.2022.009 .

Vorkapić, Miloš, Mladenović, Ivana, Pergal, Marija, Ivanov, Toni, Baltić, Marija, "Optimisation of tensile stress of poly(lactic acid) 3D printed materials using response surface methodology" in Tribology and Materials, 1, no. 2 (2022):70-80,
https://doi.org/10.46793/tribomat.2022.009 . .

TY  - CONF
AU  - Baltić, Marija
AU  - Ivanović, Milica
AU  - Tanović, Dragoljub
AU  - Vorkapić, Miloš
AU  - Mladenović, Ivana
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6465
AB  - This paper presents the static testing of the composite material's mechanical characteristics. An overview of the standards is made by which various tests are performed, and then an analysis of the results of the parameters obtained by the conventional method-stretching and optical (DIC system-bending) of carbon epoxy composite structures is given. These results represented the basis for the preparation and further application of biocomposite materials; that is, the testing procedure will be performed identically on composites containing mycelia. The mould for pressing biomaterial connected with mycelium is made of two parts. The primary purpose of the mould is to bring the loose natural material into a solid preparation following the standards ASTM D3039 and ASTM D7078, which include testing the technologically prepared and hardened sample for bending and shearing.
PB  - Turkey : Republic of Turkey - Ministry of culture and tourism, Department of libraries and publication
C3  - Program and the Book of Abstracts - International Symposium on Aircraft Technology 2022 (ISATECH 22), 14-16 September, 2022, Belgrade, Serbia
T1  - Procedures in testing the mechanical characteristics of composite structures and the possibility of application to biodegradable materials: An overview
SP  - 44
EP  - 44
UR  - https://hdl.handle.net/21.15107/rcub_cer_6465
ER  - 

@conference{
author = "Baltić, Marija and Ivanović, Milica and Tanović, Dragoljub and Vorkapić, Miloš and Mladenović, Ivana",
year = "2022",
abstract = "This paper presents the static testing of the composite material's mechanical characteristics. An overview of the standards is made by which various tests are performed, and then an analysis of the results of the parameters obtained by the conventional method-stretching and optical (DIC system-bending) of carbon epoxy composite structures is given. These results represented the basis for the preparation and further application of biocomposite materials; that is, the testing procedure will be performed identically on composites containing mycelia. The mould for pressing biomaterial connected with mycelium is made of two parts. The primary purpose of the mould is to bring the loose natural material into a solid preparation following the standards ASTM D3039 and ASTM D7078, which include testing the technologically prepared and hardened sample for bending and shearing.",
publisher = "Turkey : Republic of Turkey - Ministry of culture and tourism, Department of libraries and publication",
journal = "Program and the Book of Abstracts - International Symposium on Aircraft Technology 2022 (ISATECH 22), 14-16 September, 2022, Belgrade, Serbia",
title = "Procedures in testing the mechanical characteristics of composite structures and the possibility of application to biodegradable materials: An overview",
pages = "44-44",
url = "https://hdl.handle.net/21.15107/rcub_cer_6465"
}

Baltić, M., Ivanović, M., Tanović, D., Vorkapić, M.,& Mladenović, I.. (2022). Procedures in testing the mechanical characteristics of composite structures and the possibility of application to biodegradable materials: An overview. in Program and the Book of Abstracts - International Symposium on Aircraft Technology 2022 (ISATECH 22), 14-16 September, 2022, Belgrade, Serbia
Turkey : Republic of Turkey - Ministry of culture and tourism, Department of libraries and publication., 44-44.
https://hdl.handle.net/21.15107/rcub_cer_6465

Baltić M, Ivanović M, Tanović D, Vorkapić M, Mladenović I. Procedures in testing the mechanical characteristics of composite structures and the possibility of application to biodegradable materials: An overview. in Program and the Book of Abstracts - International Symposium on Aircraft Technology 2022 (ISATECH 22), 14-16 September, 2022, Belgrade, Serbia. 2022;:44-44.
https://hdl.handle.net/21.15107/rcub_cer_6465 .

Baltić, Marija, Ivanović, Milica, Tanović, Dragoljub, Vorkapić, Miloš, Mladenović, Ivana, "Procedures in testing the mechanical characteristics of composite structures and the possibility of application to biodegradable materials: An overview" in Program and the Book of Abstracts - International Symposium on Aircraft Technology 2022 (ISATECH 22), 14-16 September, 2022, Belgrade, Serbia (2022):44-44,
https://hdl.handle.net/21.15107/rcub_cer_6465 .

TY  - CONF
AU  - Vorkapić, Miloš
AU  - Ivanov, Toni
AU  - Baltić, Marija
AU  - Živojinović, Danijela
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5707
AB  - Da bi se na 3D štampaču izradio model sa složenim dizajnom odličnog kvaliteta, treba posebnu pažnju posvetiti njegovim elementima. U radu su razmatrana tri fundamentalna elementa: glava štampača, mlaznica i radna podloga. Upravo ovi elementi su odgovorni za ispravan rad uređaja i dalju realizaciju modela. Održavanje i zadavanje parametara štampe u mnogome zavise od stanja uređaja i kvaliteta pripreme elemenata za ukupnu proceduru štampe. Ako kvalitet materijala ne odgovara mogu da se pojave problemi u realizaciji 3D modela. U radu su razmotreni i opisani pomenuti elementi. Ovim radom pokušano je da se sa aspekta kompromisa cene i kvaliteta izrade razmotri uloga vitalnih elementata 3D štampe u realizaciji modela.
PB  - Beograd : JUSK - Jedinstveno Udruženje  Srbije za Kvalitet
C3  - Zbornik radova sa konferencije JUSK - 2022, Beograd, Srbija
T1  - Značaj komponenti 3D štampača na ukupan kvalitet izrade modela
SP  - 54
EP  - 59
UR  - https://hdl.handle.net/21.15107/rcub_cer_5707
ER  - 

@conference{
author = "Vorkapić, Miloš and Ivanov, Toni and Baltić, Marija and Živojinović, Danijela",
year = "2022",
abstract = "Da bi se na 3D štampaču izradio model sa složenim dizajnom odličnog kvaliteta, treba posebnu pažnju posvetiti njegovim elementima. U radu su razmatrana tri fundamentalna elementa: glava štampača, mlaznica i radna podloga. Upravo ovi elementi su odgovorni za ispravan rad uređaja i dalju realizaciju modela. Održavanje i zadavanje parametara štampe u mnogome zavise od stanja uređaja i kvaliteta pripreme elemenata za ukupnu proceduru štampe. Ako kvalitet materijala ne odgovara mogu da se pojave problemi u realizaciji 3D modela. U radu su razmotreni i opisani pomenuti elementi. Ovim radom pokušano je da se sa aspekta kompromisa cene i kvaliteta izrade razmotri uloga vitalnih elementata 3D štampe u realizaciji modela.",
publisher = "Beograd : JUSK - Jedinstveno Udruženje  Srbije za Kvalitet",
journal = "Zbornik radova sa konferencije JUSK - 2022, Beograd, Srbija",
title = "Značaj komponenti 3D štampača na ukupan kvalitet izrade modela",
pages = "54-59",
url = "https://hdl.handle.net/21.15107/rcub_cer_5707"
}

Vorkapić, M., Ivanov, T., Baltić, M.,& Živojinović, D.. (2022). Značaj komponenti 3D štampača na ukupan kvalitet izrade modela. in Zbornik radova sa konferencije JUSK - 2022, Beograd, Srbija
Beograd : JUSK - Jedinstveno Udruženje  Srbije za Kvalitet., 54-59.
https://hdl.handle.net/21.15107/rcub_cer_5707

Vorkapić M, Ivanov T, Baltić M, Živojinović D. Značaj komponenti 3D štampača na ukupan kvalitet izrade modela. in Zbornik radova sa konferencije JUSK - 2022, Beograd, Srbija. 2022;:54-59.
https://hdl.handle.net/21.15107/rcub_cer_5707 .

Vorkapić, Miloš, Ivanov, Toni, Baltić, Marija, Živojinović, Danijela, "Značaj komponenti 3D štampača na ukupan kvalitet izrade modela" in Zbornik radova sa konferencije JUSK - 2022, Beograd, Srbija (2022):54-59,
https://hdl.handle.net/21.15107/rcub_cer_5707 .

TY  - CONF
AU  - Tanović, Dragoljub
AU  - Baltić, Marija
AU  - Vorkapić, Miloš
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5706
AB  - Angle-of-attack (AoA) of wings, blades and other geometric shapes has a dominant role in
the generation of aerodynamic forces and turbine power since it changes the flow behavior.
The development of software and computers has enabled simplified numerical testing, which
reduces time while saving resources compared to experimental testing. Computational fluid
dynamics (CFD) is a strong numerical tool that is being increasingly utilized to simulate a wide
range of flow processes across many industries and is much employed in engineering design.
One of the most common approaches is to use Reynolds-averaged Navier-Stokes (RANS)
family of turbulence models where all effects of turbulence are modeled. For near-wall
treatment, in aeronautics, the k-ω shear stress transport (SST) model is widely employed. In
this paper, small horizontal axis wind turbine (model DE-AW01) blade at different AoAs has
been numerically investigated. A detailed description of the blade geometry is also given.
Numerical simulations of full three-dimensional flow fields using the k-ω SST turbulence
model for the closure of the governing flow equations have been performed. The tests were
performed at a high wind speed of 35 m/s (126 km/h) at AoAs of 85, 90 and 95 degrees which
corresponds to extreme weather conditions. It has been confirmed that numerical simulations
can provide sufficiently accurate estimates of the axial force and power. Furthermore, the
obtained results were compared, primarily lift and drag, as the two most dominant components
of aerodynamic forces, and the most convenient flow case, that minimizes blade loading, has
been determined.
PB  - Belgrade : University of Belgrade - Faculty of Mechanical  Engineering
C3  - Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering, ICME 2022, 08.-10. September 2022, Belgrade, Serbia
T1  - Estimation of extreme loads on a wind turbine blade at large angle-attack and high velocity
SP  - 79
EP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_cer_5706
ER  - 

@conference{
author = "Tanović, Dragoljub and Baltić, Marija and Vorkapić, Miloš",
year = "2022",
abstract = "Angle-of-attack (AoA) of wings, blades and other geometric shapes has a dominant role in
the generation of aerodynamic forces and turbine power since it changes the flow behavior.
The development of software and computers has enabled simplified numerical testing, which
reduces time while saving resources compared to experimental testing. Computational fluid
dynamics (CFD) is a strong numerical tool that is being increasingly utilized to simulate a wide
range of flow processes across many industries and is much employed in engineering design.
One of the most common approaches is to use Reynolds-averaged Navier-Stokes (RANS)
family of turbulence models where all effects of turbulence are modeled. For near-wall
treatment, in aeronautics, the k-ω shear stress transport (SST) model is widely employed. In
this paper, small horizontal axis wind turbine (model DE-AW01) blade at different AoAs has
been numerically investigated. A detailed description of the blade geometry is also given.
Numerical simulations of full three-dimensional flow fields using the k-ω SST turbulence
model for the closure of the governing flow equations have been performed. The tests were
performed at a high wind speed of 35 m/s (126 km/h) at AoAs of 85, 90 and 95 degrees which
corresponds to extreme weather conditions. It has been confirmed that numerical simulations
can provide sufficiently accurate estimates of the axial force and power. Furthermore, the
obtained results were compared, primarily lift and drag, as the two most dominant components
of aerodynamic forces, and the most convenient flow case, that minimizes blade loading, has
been determined.",
publisher = "Belgrade : University of Belgrade - Faculty of Mechanical  Engineering",
journal = "Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering, ICME 2022, 08.-10. September 2022, Belgrade, Serbia",
title = "Estimation of extreme loads on a wind turbine blade at large angle-attack and high velocity",
pages = "79-79",
url = "https://hdl.handle.net/21.15107/rcub_cer_5706"
}

Tanović, D., Baltić, M.,& Vorkapić, M.. (2022). Estimation of extreme loads on a wind turbine blade at large angle-attack and high velocity. in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering, ICME 2022, 08.-10. September 2022, Belgrade, Serbia
Belgrade : University of Belgrade - Faculty of Mechanical  Engineering., 79-79.
https://hdl.handle.net/21.15107/rcub_cer_5706

Tanović D, Baltić M, Vorkapić M. Estimation of extreme loads on a wind turbine blade at large angle-attack and high velocity. in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering, ICME 2022, 08.-10. September 2022, Belgrade, Serbia. 2022;:79-79.
https://hdl.handle.net/21.15107/rcub_cer_5706 .

Tanović, Dragoljub, Baltić, Marija, Vorkapić, Miloš, "Estimation of extreme loads on a wind turbine blade at large angle-attack and high velocity" in Booklet of Abstracts - 1st International Conference on Mathematical Modelling in Mechanics and Engineering, ICME 2022, 08.-10. September 2022, Belgrade, Serbia (2022):79-79,
https://hdl.handle.net/21.15107/rcub_cer_5706 .

TY  - CONF
AU  - Baltić, Marija
AU  - Vorkapić, Miloš
AU  - Simonović, Aleksandar
AU  - Knežević, Aleksandar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5677
AB  - Composite materials are a combination of two or more materials at the macroscopic level. They have better characteristics than individual components. By combining different types of mountings and matrices, new advanced materials can be obtained to improve performance. In complement to standard structures (carbon-epoxy, glass-epoxy), increasing importance is given to biodegradable materials. Most often, materials with a vegetative part of fungi (mycelium-mesh structure of hyphae) are used, which are increasingly used to realise biocomposites with unique processing technology. These composites have relatively good mechanical properties and are environmentally friendly because they are biodegradable. Today, biocomposites are used in packaging production, fashion, and construction, and the emphasis is on the food industry. This paper presents the making mould technology to set the biocomposite structure and test their mechanical characteristics. The mould for pressing biomaterial connected with mycelium is made of two parts. The primary purpose of the mould is to bring the loose natural material into a solid preparation following the standards ASTM D7250 and ASTM C393, which include testing the technologically prepared and hardened sample for bending and shearing. The testing included two phases. In the first, hardened samples without moisture were tested. The second involved the technological process of drying after sowing mycelium so that a variant of the mould with a perforated bottom was used to harden the samples thoroughly. A comparative analysis of the results in both phases was performed, which was a further guideline in examining the improvement of composite characteristics.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
T1  - Mould technology to test mechanical characreristics of biocomposite structures
SP  - 62
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_cer_5677
ER  - 

@conference{
author = "Baltić, Marija and Vorkapić, Miloš and Simonović, Aleksandar and Knežević, Aleksandar",
year = "2022",
abstract = "Composite materials are a combination of two or more materials at the macroscopic level. They have better characteristics than individual components. By combining different types of mountings and matrices, new advanced materials can be obtained to improve performance. In complement to standard structures (carbon-epoxy, glass-epoxy), increasing importance is given to biodegradable materials. Most often, materials with a vegetative part of fungi (mycelium-mesh structure of hyphae) are used, which are increasingly used to realise biocomposites with unique processing technology. These composites have relatively good mechanical properties and are environmentally friendly because they are biodegradable. Today, biocomposites are used in packaging production, fashion, and construction, and the emphasis is on the food industry. This paper presents the making mould technology to set the biocomposite structure and test their mechanical characteristics. The mould for pressing biomaterial connected with mycelium is made of two parts. The primary purpose of the mould is to bring the loose natural material into a solid preparation following the standards ASTM D7250 and ASTM C393, which include testing the technologically prepared and hardened sample for bending and shearing. The testing included two phases. In the first, hardened samples without moisture were tested. The second involved the technological process of drying after sowing mycelium so that a variant of the mould with a perforated bottom was used to harden the samples thoroughly. A comparative analysis of the results in both phases was performed, which was a further guideline in examining the improvement of composite characteristics.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia",
title = "Mould technology to test mechanical characreristics of biocomposite structures",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_cer_5677"
}

Baltić, M., Vorkapić, M., Simonović, A.,& Knežević, A.. (2022). Mould technology to test mechanical characreristics of biocomposite structures. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 62-62.
https://hdl.handle.net/21.15107/rcub_cer_5677

Baltić M, Vorkapić M, Simonović A, Knežević A. Mould technology to test mechanical characreristics of biocomposite structures. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia. 2022;:62-62.
https://hdl.handle.net/21.15107/rcub_cer_5677 .

Baltić, Marija, Vorkapić, Miloš, Simonović, Aleksandar, Knežević, Aleksandar, "Mould technology to test mechanical characreristics of biocomposite structures" in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia (2022):62-62,
https://hdl.handle.net/21.15107/rcub_cer_5677 .

TY  - CONF
AU  - Vorkapić, Miloš
AU  - Baltić, Marija
AU  - Ivanov, Toni
AU  - Simonović, Aleksandar
PY  - 2022
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5676
AB  - This paper presents the 3D printing technology for various textile materials. The application of this technology is vital in manufacturing various clothing items, primarily for specific purposes: hikers, firefighters, soldiers, and athletes. The installation of sensors, life function parameters monitoring and the usage of the new materials are the basis for the future development of the textile industry. Today, thermoplastic and textile materials are increasingly used in practice. Polylactic Acid (PLA) thermoplastic materials were used in the paper - in spool, Polyvinyl Chloride (PVC) and Nylon (in strips); while from textile materials, polyester, viscose and silk in the form of finished fabrics were considered. The technology of preparation of textile fibres for 3D printing using laser is shown. This technology makes it easier to combine textiles and molten filament. The pros and cons of joining different materials are discussed. Further research would go in the direction of making constructive solutions and testing the mechanical properties of various textile-polymer composites.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
T1  - The significance of 3D printing in textile-polymer composite structures realization for special purpose
SP  - 66
EP  - 66
UR  - https://hdl.handle.net/21.15107/rcub_cer_5676
ER  - 

@conference{
author = "Vorkapić, Miloš and Baltić, Marija and Ivanov, Toni and Simonović, Aleksandar",
year = "2022",
abstract = "This paper presents the 3D printing technology for various textile materials. The application of this technology is vital in manufacturing various clothing items, primarily for specific purposes: hikers, firefighters, soldiers, and athletes. The installation of sensors, life function parameters monitoring and the usage of the new materials are the basis for the future development of the textile industry. Today, thermoplastic and textile materials are increasingly used in practice. Polylactic Acid (PLA) thermoplastic materials were used in the paper - in spool, Polyvinyl Chloride (PVC) and Nylon (in strips); while from textile materials, polyester, viscose and silk in the form of finished fabrics were considered. The technology of preparation of textile fibres for 3D printing using laser is shown. This technology makes it easier to combine textiles and molten filament. The pros and cons of joining different materials are discussed. Further research would go in the direction of making constructive solutions and testing the mechanical properties of various textile-polymer composites.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia",
title = "The significance of 3D printing in textile-polymer composite structures realization for special purpose",
pages = "66-66",
url = "https://hdl.handle.net/21.15107/rcub_cer_5676"
}

Vorkapić, M., Baltić, M., Ivanov, T.,& Simonović, A.. (2022). The significance of 3D printing in textile-polymer composite structures realization for special purpose. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 66-66.
https://hdl.handle.net/21.15107/rcub_cer_5676

Vorkapić M, Baltić M, Ivanov T, Simonović A. The significance of 3D printing in textile-polymer composite structures realization for special purpose. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia. 2022;:66-66.
https://hdl.handle.net/21.15107/rcub_cer_5676 .

Vorkapić, Miloš, Baltić, Marija, Ivanov, Toni, Simonović, Aleksandar, "The significance of 3D printing in textile-polymer composite structures realization for special purpose" in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2022, 05 – 08 July 2022, Zlatibor, Serbia (2022):66-66,
https://hdl.handle.net/21.15107/rcub_cer_5676 .

TY  - CONF
AU  - Vorkapić, Miloš
AU  - Mladenović, Ivana
AU  - Kovačević, Aleksandar
AU  - Baltić, Marija
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5662
AB  - Reverse engineering (RE) is a process that integrates additive technologies, while enabling finishing or modifications of an existing model, as well as the application of new ideas in design improvement. This approach leads to the reduction (or elimination) of certain steps of the product development process, and faster model digitization, with further improvements and optimization of parameters. The biggest challenge in the application of RE is the high-quality physical part reproduction with the best possible characteristics, while keeping the realization costs as low as possible. Especially in this segment additive technologies become increasingly important. In this work, RE is applied in order to fabricate a protective cover of a machine used in semiconductor production, based on the existing (damaged) physical sample. The protective cover is a part of a silicon wafer dicing saw (Micro Automation, Model 602M), and it is made of plastic. Due to the age and the long exploitation of the machine, the sample part was broken at one of its supports. Unfortunately, since the machine has become obsolete a long time ago, the spare parts cannot be found. In such cases, RE has an important role, and the fabrication of a new part would be almost unthinkable without the application of additive technology. The CAD model of the protective cover was defined based on the measured dimensions of the damaged part. The procedure is very convenient in cases when only a physical part (or a finished product) exists without technical documentation, or when the existing technical documentation is not in a digital form. We performed model optimization and load simulation on the supports for different materials. After digitization, the model manufacturing process started. The model was made of the thermoplastic polymer ABS on the 3D printer Wanhao Duplicator, type i3 plus, made in the People’s Republic of China. In this paper, we intended to illustrate the significance of the symbiosis of RE and the additive technology in the process of realization of parts/assemblies of an obsolete product with no spare parts available.
PB  - SIRAMM project - H2020-WIDESPREAD-2018-03 Project No. 857124, Horizon 2020
C3  - Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia
T1  - Link between reverse engineering and additive technology on the example of a model without technical documentation
SP  - 39
EP  - 39
UR  - https://hdl.handle.net/21.15107/rcub_cer_5662
ER  - 

@conference{
author = "Vorkapić, Miloš and Mladenović, Ivana and Kovačević, Aleksandar and Baltić, Marija",
year = "2021",
abstract = "Reverse engineering (RE) is a process that integrates additive technologies, while enabling finishing or modifications of an existing model, as well as the application of new ideas in design improvement. This approach leads to the reduction (or elimination) of certain steps of the product development process, and faster model digitization, with further improvements and optimization of parameters. The biggest challenge in the application of RE is the high-quality physical part reproduction with the best possible characteristics, while keeping the realization costs as low as possible. Especially in this segment additive technologies become increasingly important. In this work, RE is applied in order to fabricate a protective cover of a machine used in semiconductor production, based on the existing (damaged) physical sample. The protective cover is a part of a silicon wafer dicing saw (Micro Automation, Model 602M), and it is made of plastic. Due to the age and the long exploitation of the machine, the sample part was broken at one of its supports. Unfortunately, since the machine has become obsolete a long time ago, the spare parts cannot be found. In such cases, RE has an important role, and the fabrication of a new part would be almost unthinkable without the application of additive technology. The CAD model of the protective cover was defined based on the measured dimensions of the damaged part. The procedure is very convenient in cases when only a physical part (or a finished product) exists without technical documentation, or when the existing technical documentation is not in a digital form. We performed model optimization and load simulation on the supports for different materials. After digitization, the model manufacturing process started. The model was made of the thermoplastic polymer ABS on the 3D printer Wanhao Duplicator, type i3 plus, made in the People’s Republic of China. In this paper, we intended to illustrate the significance of the symbiosis of RE and the additive technology in the process of realization of parts/assemblies of an obsolete product with no spare parts available.",
publisher = "SIRAMM project - H2020-WIDESPREAD-2018-03 Project No. 857124, Horizon 2020",
journal = "Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia",
title = "Link between reverse engineering and additive technology on the example of a model without technical documentation",
pages = "39-39",
url = "https://hdl.handle.net/21.15107/rcub_cer_5662"
}

Vorkapić, M., Mladenović, I., Kovačević, A.,& Baltić, M.. (2021). Link between reverse engineering and additive technology on the example of a model without technical documentation. in Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia
SIRAMM project - H2020-WIDESPREAD-2018-03 Project No. 857124, Horizon 2020., 39-39.
https://hdl.handle.net/21.15107/rcub_cer_5662

Vorkapić M, Mladenović I, Kovačević A, Baltić M. Link between reverse engineering and additive technology on the example of a model without technical documentation. in Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia. 2021;:39-39.
https://hdl.handle.net/21.15107/rcub_cer_5662 .

Vorkapić, Miloš, Mladenović, Ivana, Kovačević, Aleksandar, Baltić, Marija, "Link between reverse engineering and additive technology on the example of a model without technical documentation" in Program and the Book of Abstracts - International Conference East Europe Conference on Additively Manufactured Materials – EECAM21, 2nd-4th September 2021, Belgrade, Serbia (2021):39-39,
https://hdl.handle.net/21.15107/rcub_cer_5662 .

TY  - CONF
AU  - Mladenović, Ivana
AU  - Baltić, Marija
AU  - Vorkapić, Miloš
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5660
AB  - In this study, electrodeposition of nano-crystalline copper coatings (ED-Cu) from the sulphate bath on different substrate by the regime of direct current (DC) has been investigated. Composite systems of copper thin coatings (5-20 µm) on metal foil of copper, brass and stainless steel were fabricated. Electrodeposition was performed at constant current density (50 mA•cm-2) in the open type electrochemical cell with application magnetic stirrer (100 rpm) in order to mixing electrolyte. Adhesion of coatings on different substrates was investigated by Vickers microindentation hardness testing in order to determinate relation between microhardness of the coatings and adhesion strength of the coatings to the substrates. The observed adhesion parameter is called the critical reduction depth. In order to evaluate the results of adhesion obtained by Vickers method, bidirectional bending test technique was performed to assess the adhesion behaviour of ED-Cu coatings to the substrates. Bidirectional bending test machine was specially designed for this study. The mechanism performs bending of the sample under controlled and automated conditions. The critical cycle number (start of detachment of the coating from the foil) is observed. Then, the values of adhesion parameters obtained by applying two different measurement methods were compared. A comparative investigation showed that the ED-Cu coatings produced on brass substrate had much better adhesion then the same coating on steel, but weaker adhesion than Cu on Cu foil. It has also been confirmed that with increasing thickness of the copper coatings, adhesion decreases.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021, 29/06-02/07 2021, Zlatibor, Serbia
T1  - Characterization and analysis adhesion of copper coating electrodeposited on flexibile substrates
SP  - 62
EP  - 62
UR  - https://hdl.handle.net/21.15107/rcub_cer_5660
ER  - 

@conference{
author = "Mladenović, Ivana and Baltić, Marija and Vorkapić, Miloš",
year = "2021",
abstract = "In this study, electrodeposition of nano-crystalline copper coatings (ED-Cu) from the sulphate bath on different substrate by the regime of direct current (DC) has been investigated. Composite systems of copper thin coatings (5-20 µm) on metal foil of copper, brass and stainless steel were fabricated. Electrodeposition was performed at constant current density (50 mA•cm-2) in the open type electrochemical cell with application magnetic stirrer (100 rpm) in order to mixing electrolyte. Adhesion of coatings on different substrates was investigated by Vickers microindentation hardness testing in order to determinate relation between microhardness of the coatings and adhesion strength of the coatings to the substrates. The observed adhesion parameter is called the critical reduction depth. In order to evaluate the results of adhesion obtained by Vickers method, bidirectional bending test technique was performed to assess the adhesion behaviour of ED-Cu coatings to the substrates. Bidirectional bending test machine was specially designed for this study. The mechanism performs bending of the sample under controlled and automated conditions. The critical cycle number (start of detachment of the coating from the foil) is observed. Then, the values of adhesion parameters obtained by applying two different measurement methods were compared. A comparative investigation showed that the ED-Cu coatings produced on brass substrate had much better adhesion then the same coating on steel, but weaker adhesion than Cu on Cu foil. It has also been confirmed that with increasing thickness of the copper coatings, adhesion decreases.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021, 29/06-02/07 2021, Zlatibor, Serbia",
title = "Characterization and analysis adhesion of copper coating electrodeposited on flexibile substrates",
pages = "62-62",
url = "https://hdl.handle.net/21.15107/rcub_cer_5660"
}

Mladenović, I., Baltić, M.,& Vorkapić, M.. (2021). Characterization and analysis adhesion of copper coating electrodeposited on flexibile substrates. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021, 29/06-02/07 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 62-62.
https://hdl.handle.net/21.15107/rcub_cer_5660

Mladenović I, Baltić M, Vorkapić M. Characterization and analysis adhesion of copper coating electrodeposited on flexibile substrates. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021, 29/06-02/07 2021, Zlatibor, Serbia. 2021;:62-62.
https://hdl.handle.net/21.15107/rcub_cer_5660 .

Mladenović, Ivana, Baltić, Marija, Vorkapić, Miloš, "Characterization and analysis adhesion of copper coating electrodeposited on flexibile substrates" in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021, 29/06-02/07 2021, Zlatibor, Serbia (2021):62-62,
https://hdl.handle.net/21.15107/rcub_cer_5660 .

TY  - CONF
AU  - Baltić, Marija
AU  - Ivanov, Toni
AU  - Vorkapić, Miloš
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/5658
AB  - The proper functioning of urban public transport is imperative in larger city areas. Thus the bus is still the most commonly used type of passenger transport. Taking into account the daily frequency of these vehicles, the emission and impact of harmful substances on the environment are very important. One of the most important factors when inspecting a vehicle is checking the emission of exhaust gases, which is a significant indicator of the regularity of the power group. If the emission is above the permitted limits, it is important to prevent further bus exploitation. Because of the aforementioned problems the advantage is given to electric vehicles, and as a representative of the propulsion, electric batteries with LTO (lithium titanium) capacity of 90.5 kWh that can be charched fast at the terminals are considered.
This paper analyses one city line where a comparison of technical features, energy efficiency and environmental effects between the existing diesel and new electric buses was made. Based on the set models, appropriate load simulations, and the obtained results, it was established that 12 electric buses replace 9 articulated buses according to the frequency of passenger transport.
In terms of energy efficiency, two modes of electric buses operation were analysed: the first without air conditioning and heating system, and the second at a temperature of -10 °C. Based on detailed research, it is recommended to introduce electric buses in public transportation, both in terms of cost-effectiveness and in environmental protection.
PB  - Belgrade : Innovation Center of Faculty of Mechanical Engineering
C3  - Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021,  29/06-02/07 2021, Zlatibor, Serbia
T1  - Comparative analysis of conventional diesel and electric bus characteristics – Technical and environmental aspects
SP  - 61
EP  - 61
UR  - https://hdl.handle.net/21.15107/rcub_cer_5658
ER  - 

@conference{
author = "Baltić, Marija and Ivanov, Toni and Vorkapić, Miloš",
year = "2021",
abstract = "The proper functioning of urban public transport is imperative in larger city areas. Thus the bus is still the most commonly used type of passenger transport. Taking into account the daily frequency of these vehicles, the emission and impact of harmful substances on the environment are very important. One of the most important factors when inspecting a vehicle is checking the emission of exhaust gases, which is a significant indicator of the regularity of the power group. If the emission is above the permitted limits, it is important to prevent further bus exploitation. Because of the aforementioned problems the advantage is given to electric vehicles, and as a representative of the propulsion, electric batteries with LTO (lithium titanium) capacity of 90.5 kWh that can be charched fast at the terminals are considered.
This paper analyses one city line where a comparison of technical features, energy efficiency and environmental effects between the existing diesel and new electric buses was made. Based on the set models, appropriate load simulations, and the obtained results, it was established that 12 electric buses replace 9 articulated buses according to the frequency of passenger transport.
In terms of energy efficiency, two modes of electric buses operation were analysed: the first without air conditioning and heating system, and the second at a temperature of -10 °C. Based on detailed research, it is recommended to introduce electric buses in public transportation, both in terms of cost-effectiveness and in environmental protection.",
publisher = "Belgrade : Innovation Center of Faculty of Mechanical Engineering",
journal = "Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021,  29/06-02/07 2021, Zlatibor, Serbia",
title = "Comparative analysis of conventional diesel and electric bus characteristics – Technical and environmental aspects",
pages = "61-61",
url = "https://hdl.handle.net/21.15107/rcub_cer_5658"
}

Baltić, M., Ivanov, T.,& Vorkapić, M.. (2021). Comparative analysis of conventional diesel and electric bus characteristics – Technical and environmental aspects. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021,  29/06-02/07 2021, Zlatibor, Serbia
Belgrade : Innovation Center of Faculty of Mechanical Engineering., 61-61.
https://hdl.handle.net/21.15107/rcub_cer_5658

Baltić M, Ivanov T, Vorkapić M. Comparative analysis of conventional diesel and electric bus characteristics – Technical and environmental aspects. in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021,  29/06-02/07 2021, Zlatibor, Serbia. 2021;:61-61.
https://hdl.handle.net/21.15107/rcub_cer_5658 .

Baltić, Marija, Ivanov, Toni, Vorkapić, Miloš, "Comparative analysis of conventional diesel and electric bus characteristics – Technical and environmental aspects" in Program and the Book of Abstracts - International Conference of Experimental and Numerical Investigations and New Technologies, CNN TECH 2021,  29/06-02/07 2021, Zlatibor, Serbia (2021):61-61,
https://hdl.handle.net/21.15107/rcub_cer_5658 .

TY  - JOUR
AU  - Vorkapić, Miloš
AU  - Ivanov, Toni
AU  - Baltić, Marija
AU  - Kreculj, Dragan
AU  - Tanović, Dragoljub Lj.
AU  - Kovačević, Aleksandar M.
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3925
AB  - Aditivna proizvodnja uključuje izradu proizvoda složene geometrije u relativno malim količinama, kao i izradu alata i kalupa za masovnu proizvodnju. Aditivnom proizovnjom realizuju se modeli prema digitalnom prikazu, a primena je ogromna u različitim industrijskim sektorima. U poređenju sa tradicionalnom proizvodnjom, glavni parametri u odabiru aditivne tehnologije su: ušteda energije, smanjenje otpada, smanjenje upotrebe većeg broja alata, kao i optimizacija dizajna. Aditivna proizvodnja ili tehnologija 3D štampe rade na principu dodavanja materijala u slojevima, tj. model se formira od slojeva rastopljenog materijala koji se odmah hladi i očvršćava. 3D štampa omogućava čestu i jednostavnu modifikaciju modela na zahtev kupca, a pre ulaska modela u samu proizvodnju. Ovo čini komunikaciju na relaciji proizvođač-kupac dosta jednostavnom. Polazni materijal za izradu modela je polilaktična kiselina (PLA). To je ekološki termoplastični poliester koji se prirodno razgrađuje u prirodi. Na mehaničke karakteristike realizovanog modela od PLA značajno utiču različite tehnološke promenljive kao što su: prečnik brizgaljke, debljina definisanog sloja, procentualna vrednost ispune, veličina uzorka koji se puni, brzina punjenja i temperatura proizvodnje. Cilj ovog rada je da se prikaže postupak realizacije kutije elektronike za malogabaritni transmiter pritiska na 3D štampaču. Time se projektantu daje mogućnost da ispravi postojeće greške, modifikuje proizvod prema zahterima krajnjih korisnika i na kraju daje polazna osnova za realizaciju prototipa novog proizvoda.
AB  - Additive manufacturing involves manufacturing of products with complex geometry in relatively small quantities, as well as the tools and molds manufacturing for mass production. With additive manufacturing, digital models are being realized and implementation is huge in various industrial sectors. Compared to traditional manufacturing, the main parameters in the choice of additive technology are: energy savings, waste reduction, reduced use of more tools and optimization of design. Additive manufacturing or 3D printing technology works on the principle of adding material in layers, i.e. the model is formed from layers of molten material that is immediately cooled and solidified. 3D printing allows to work with customers to solve design problems before embarking on a launch production. The starting material for the model is polyactic acid (PLA). It is an eco-friendly thermoplastic polyester, that breaks down naturally. The mechanical characteristics of the realized PLA model are significantly influenced by various technological variables, such as following: nozzle diameter, thickness of defined layer, percentage of fill,
sample size to be filled, filling rate and production temperature. The aim of this paper is to present the process of realization of an electronics enclosure for a compact pressure transmitter on a 3D printer. This gives the designer the possibility to correct existing errors, modify the product according to the wishes of the end users and finally provides a starting point for the prototype of new product.
PB  - Savez inženjera i tehničara Srbije, Beograd, Srbija
T2  - Tehnika
T1  - Upotreba 3D štampe u analizi dizajna realizovanog proizvoda: Slučaj - kutija malogabaritnog transmitera pritiska
T1  - The usage of 3D printing in the analysis of the product design: Case – Electronic enclosure of compact pressure transmitter
VL  - 75
IS  - 2
SP  - 179
EP  - 186
DO  - 10.5937/tehnika2002179V
ER  - 

@article{
author = "Vorkapić, Miloš and Ivanov, Toni and Baltić, Marija and Kreculj, Dragan and Tanović, Dragoljub Lj. and Kovačević, Aleksandar M.",
year = "2020",
abstract = "Aditivna proizvodnja uključuje izradu proizvoda složene geometrije u relativno malim količinama, kao i izradu alata i kalupa za masovnu proizvodnju. Aditivnom proizovnjom realizuju se modeli prema digitalnom prikazu, a primena je ogromna u različitim industrijskim sektorima. U poređenju sa tradicionalnom proizvodnjom, glavni parametri u odabiru aditivne tehnologije su: ušteda energije, smanjenje otpada, smanjenje upotrebe većeg broja alata, kao i optimizacija dizajna. Aditivna proizvodnja ili tehnologija 3D štampe rade na principu dodavanja materijala u slojevima, tj. model se formira od slojeva rastopljenog materijala koji se odmah hladi i očvršćava. 3D štampa omogućava čestu i jednostavnu modifikaciju modela na zahtev kupca, a pre ulaska modela u samu proizvodnju. Ovo čini komunikaciju na relaciji proizvođač-kupac dosta jednostavnom. Polazni materijal za izradu modela je polilaktična kiselina (PLA). To je ekološki termoplastični poliester koji se prirodno razgrađuje u prirodi. Na mehaničke karakteristike realizovanog modela od PLA značajno utiču različite tehnološke promenljive kao što su: prečnik brizgaljke, debljina definisanog sloja, procentualna vrednost ispune, veličina uzorka koji se puni, brzina punjenja i temperatura proizvodnje. Cilj ovog rada je da se prikaže postupak realizacije kutije elektronike za malogabaritni transmiter pritiska na 3D štampaču. Time se projektantu daje mogućnost da ispravi postojeće greške, modifikuje proizvod prema zahterima krajnjih korisnika i na kraju daje polazna osnova za realizaciju prototipa novog proizvoda., Additive manufacturing involves manufacturing of products with complex geometry in relatively small quantities, as well as the tools and molds manufacturing for mass production. With additive manufacturing, digital models are being realized and implementation is huge in various industrial sectors. Compared to traditional manufacturing, the main parameters in the choice of additive technology are: energy savings, waste reduction, reduced use of more tools and optimization of design. Additive manufacturing or 3D printing technology works on the principle of adding material in layers, i.e. the model is formed from layers of molten material that is immediately cooled and solidified. 3D printing allows to work with customers to solve design problems before embarking on a launch production. The starting material for the model is polyactic acid (PLA). It is an eco-friendly thermoplastic polyester, that breaks down naturally. The mechanical characteristics of the realized PLA model are significantly influenced by various technological variables, such as following: nozzle diameter, thickness of defined layer, percentage of fill,
sample size to be filled, filling rate and production temperature. The aim of this paper is to present the process of realization of an electronics enclosure for a compact pressure transmitter on a 3D printer. This gives the designer the possibility to correct existing errors, modify the product according to the wishes of the end users and finally provides a starting point for the prototype of new product.",
publisher = "Savez inženjera i tehničara Srbije, Beograd, Srbija",
journal = "Tehnika",
title = "Upotreba 3D štampe u analizi dizajna realizovanog proizvoda: Slučaj - kutija malogabaritnog transmitera pritiska, The usage of 3D printing in the analysis of the product design: Case – Electronic enclosure of compact pressure transmitter",
volume = "75",
number = "2",
pages = "179-186",
doi = "10.5937/tehnika2002179V"
}

Vorkapić, M., Ivanov, T., Baltić, M., Kreculj, D., Tanović, D. Lj.,& Kovačević, A. M.. (2020). Upotreba 3D štampe u analizi dizajna realizovanog proizvoda: Slučaj - kutija malogabaritnog transmitera pritiska. in Tehnika
Savez inženjera i tehničara Srbije, Beograd, Srbija., 75(2), 179-186.
https://doi.org/10.5937/tehnika2002179V

Vorkapić M, Ivanov T, Baltić M, Kreculj D, Tanović DL, Kovačević AM. Upotreba 3D štampe u analizi dizajna realizovanog proizvoda: Slučaj - kutija malogabaritnog transmitera pritiska. in Tehnika. 2020;75(2):179-186.
doi:10.5937/tehnika2002179V .

Vorkapić, Miloš, Ivanov, Toni, Baltić, Marija, Kreculj, Dragan, Tanović, Dragoljub Lj., Kovačević, Aleksandar M., "Upotreba 3D štampe u analizi dizajna realizovanog proizvoda: Slučaj - kutija malogabaritnog transmitera pritiska" in Tehnika, 75, no. 2 (2020):179-186,
https://doi.org/10.5937/tehnika2002179V . .

TY  - JOUR
AU  - Baltić, Marija
AU  - Svorcan, Jelena
AU  - Perić, Bojan
AU  - Vorkapić, Miloš
AU  - Ivanov, Toni
AU  - Peković, Ognjen
PY  - 2019
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/2997
AB  - In order to investigate both static and dynamic characteristics of composite plates and validate a contemporary, non-invasive experimental technique a comparative experimental and numerical analysis was performed. Three, geometrically the same but different in ply orientation, carbon-epoxy laminates were tested in both healthy and damaged conditions. Damages were inflicted in a shape of horizontal crack. Experiments and numerical simulations were performed by digital image correlation (DIC) and finite element method (FEM), respectively. Obtained time-responses of the tested structures were fast Fourier transformed (FFT) to frequency domain for a clearer
understanding of natural frequencies and oscillation modes. Results are presented in tabular and graphical form. The overall correspondence of two sets of structural displacements is satisfactory. Some discrepancies might be contributed to the idealized geometry and restraint consideration. Also, due to the fast damping of higher tones, the errors in determining higher natural frequencies increase but still remain in 5 % range.
PB  - Springer
T2  - Journal of Mechanical Science and Technology
T1  - Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates
VL  - 33
IS  - 6
SP  - 2597
EP  - 2603
DO  - 10.1007/s12206-019-0507-7
ER  - 

@article{
author = "Baltić, Marija and Svorcan, Jelena and Perić, Bojan and Vorkapić, Miloš and Ivanov, Toni and Peković, Ognjen",
year = "2019",
abstract = "In order to investigate both static and dynamic characteristics of composite plates and validate a contemporary, non-invasive experimental technique a comparative experimental and numerical analysis was performed. Three, geometrically the same but different in ply orientation, carbon-epoxy laminates were tested in both healthy and damaged conditions. Damages were inflicted in a shape of horizontal crack. Experiments and numerical simulations were performed by digital image correlation (DIC) and finite element method (FEM), respectively. Obtained time-responses of the tested structures were fast Fourier transformed (FFT) to frequency domain for a clearer
understanding of natural frequencies and oscillation modes. Results are presented in tabular and graphical form. The overall correspondence of two sets of structural displacements is satisfactory. Some discrepancies might be contributed to the idealized geometry and restraint consideration. Also, due to the fast damping of higher tones, the errors in determining higher natural frequencies increase but still remain in 5 % range.",
publisher = "Springer",
journal = "Journal of Mechanical Science and Technology",
title = "Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates",
volume = "33",
number = "6",
pages = "2597-2603",
doi = "10.1007/s12206-019-0507-7"
}

Baltić, M., Svorcan, J., Perić, B., Vorkapić, M., Ivanov, T.,& Peković, O.. (2019). Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates. in Journal of Mechanical Science and Technology
Springer., 33(6), 2597-2603.
https://doi.org/10.1007/s12206-019-0507-7

Baltić M, Svorcan J, Perić B, Vorkapić M, Ivanov T, Peković O. Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates. in Journal of Mechanical Science and Technology. 2019;33(6):2597-2603.
doi:10.1007/s12206-019-0507-7 .

Baltić, Marija, Svorcan, Jelena, Perić, Bojan, Vorkapić, Miloš, Ivanov, Toni, Peković, Ognjen, "Comparative numerical and experimental investigation of static and dynamic characteristics of composite plates" in Journal of Mechanical Science and Technology, 33, no. 6 (2019):2597-2603,
https://doi.org/10.1007/s12206-019-0507-7 . .