TY  - CONF
AU  - Janković, Darko
AU  - Simović Pavlović, Marina
AU  - Pagnacco, Maja
AU  - Nikolić, Zoran
AU  - Bokić, Bojana
AU  - Kolarić, Branko
AU  - Tomić, Ljubiša
AU  - Vasiljević, Darko
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7075
AB  - Besides fundamental importance, granular physics has made considerable progress in revealing the dynamics of large ensembles of interacting macroscopic particles and their pattern formation for various applications in material, food, and chemical technologies. In this study, optical images obtained by the fast camera have been used to reveal the organization of various granular substrates as a function of interaction with projectiles of different shapes and energies. Specific patterns have been observed due to the energy dissipations after the impact. The obtained results indicate the possibility of manipulating granular matter to mold and direct/redirect the energy of the impact. This type of manipulation is of great importance for various applications, especially in the military domain.
PB  - Belgian Physical Society
C3  - General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium
T1  - Revealing Self-organization of Granular Matter: From  Fundamental Physics to Military Technology  Applications
SP  - CMN1
EP  - CMN1
UR  - https://hdl.handle.net/21.15107/rcub_cer_7075
ER  - 

@conference{
author = "Janković, Darko and Simović Pavlović, Marina and Pagnacco, Maja and Nikolić, Zoran and Bokić, Bojana and Kolarić, Branko and Tomić, Ljubiša and Vasiljević, Darko",
year = "2023",
abstract = "Besides fundamental importance, granular physics has made considerable progress in revealing the dynamics of large ensembles of interacting macroscopic particles and their pattern formation for various applications in material, food, and chemical technologies. In this study, optical images obtained by the fast camera have been used to reveal the organization of various granular substrates as a function of interaction with projectiles of different shapes and energies. Specific patterns have been observed due to the energy dissipations after the impact. The obtained results indicate the possibility of manipulating granular matter to mold and direct/redirect the energy of the impact. This type of manipulation is of great importance for various applications, especially in the military domain.",
publisher = "Belgian Physical Society",
journal = "General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium",
title = "Revealing Self-organization of Granular Matter: From  Fundamental Physics to Military Technology  Applications",
pages = "CMN1-CMN1",
url = "https://hdl.handle.net/21.15107/rcub_cer_7075"
}

Janković, D., Simović Pavlović, M., Pagnacco, M., Nikolić, Z., Bokić, B., Kolarić, B., Tomić, L.,& Vasiljević, D.. (2023). Revealing Self-organization of Granular Matter: From  Fundamental Physics to Military Technology  Applications. in General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium
Belgian Physical Society., CMN1-CMN1.
https://hdl.handle.net/21.15107/rcub_cer_7075

Janković D, Simović Pavlović M, Pagnacco M, Nikolić Z, Bokić B, Kolarić B, Tomić L, Vasiljević D. Revealing Self-organization of Granular Matter: From  Fundamental Physics to Military Technology  Applications. in General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium. 2023;:CMN1-CMN1.
https://hdl.handle.net/21.15107/rcub_cer_7075 .

Janković, Darko, Simović Pavlović, Marina, Pagnacco, Maja, Nikolić, Zoran, Bokić, Bojana, Kolarić, Branko, Tomić, Ljubiša, Vasiljević, Darko, "Revealing Self-organization of Granular Matter: From  Fundamental Physics to Military Technology  Applications" in General Scientific Meeting, Belgian Physical Society, May 17th, Namur, Belgium (2023):CMN1-CMN1,
https://hdl.handle.net/21.15107/rcub_cer_7075 .

TY  - JOUR
AU  - Lazarević, Miloš
AU  - Živković, Bogdan
AU  - Bajić, Danica
AU  - Alil, Ana
AU  - Tomić, Ljubiša
AU  - Nedić, Bogdan
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6448
AB  - The aim of this study was to investigate the possibility to
use the industrial explosive Amonex, which belongs to a
group of low-to-middle detonation velocity explosives, for
welding of metallic materials. It consists of ammonium
nitrate and TNT as energetic components and other inert
ingredients and has a powdery consistency, easily applicable in a desirable layer over the metal plates to be welded.
Within this research, Amonex was applied to weld plates of
aluminium Al 2024 and steel 1.0216 (according to EN
10027-2). The procedure of welding was carried out in the
configuration of parallel plates, and afterwards the welded
joint was examined. Ultrasonic method and infrared imaging were used as non-destructive techniques, and then the
samples were cut from the welded plate using water-jet, in
order to perform microscopic analyses of the cross-section
in the joint area. It was observed that a good-quality welded
joint was obtained, and that the selected explosive may find
further application in this area. However, certain nonwelded area was observed, encouraging future modification
of the welding procedure set-up.
AB  - Cilj ove studije je ispitivanje mogućnosti upotrebe industrijskog eksploziva Amonex, koji pripada grupi eksploziva
male-do-srednje brzine detonacije, za zavarivanje metalnih
materijala. Ovaj eksploziv se sastoji od amonijum nitrata i
TNT-a kao energetskih komponenti i drugih inertnih sastojaka, ima praškastu strukturu i lako se nanosi u željenom
sloju preko metalnih ploča koje se zavaruju. U okviru ovog
istraživanja, Amonex je primenjen na zavarenim pločama
aluminijuma Al 2024 i čelika 1.0216 (oznake prema EN
10027-2). Postupak zavarivanja izveden je na paralelno
postavljenim pločama, nakon čega je izvršen pregled zavarenog spoja. Kao metode IBR korišćene su ultrazvučna
metoda i termovizijsko ispitivanje. Primenom vodenog mlaza
iz zavarene ploče su isečeni uzorci u cilju ispitivanja mikrostrukture poprečnog preseka zavarenog spoja. Uočeno je
da je dobijen kvalitetan zavareni spoj, te da odabrani
eksploziv može naći dalju primenu u ovoj oblasti. Međutim,
takođe su uočene i određene površine nezavarenog područja,
što je nametnulo potrebu za izmenama postavke ovog
postupka zavarivanja.
PB  - Društvo za integritet i vek konstrukcija
T2  - Structural integrity and life
T1  - Properties of aluminium-steel plates explosively welded using Amonex
T1  - Osobine eksplozivno zavarenih ploča aluminijuma i čelika upotrebom Amonex eksploziva
VL  - 23
IS  - 2
SP  - 141
EP  - 146
UR  - https://hdl.handle.net/21.15107/rcub_cer_6448
ER  - 

@article{
author = "Lazarević, Miloš and Živković, Bogdan and Bajić, Danica and Alil, Ana and Tomić, Ljubiša and Nedić, Bogdan",
year = "2023",
abstract = "The aim of this study was to investigate the possibility to
use the industrial explosive Amonex, which belongs to a
group of low-to-middle detonation velocity explosives, for
welding of metallic materials. It consists of ammonium
nitrate and TNT as energetic components and other inert
ingredients and has a powdery consistency, easily applicable in a desirable layer over the metal plates to be welded.
Within this research, Amonex was applied to weld plates of
aluminium Al 2024 and steel 1.0216 (according to EN
10027-2). The procedure of welding was carried out in the
configuration of parallel plates, and afterwards the welded
joint was examined. Ultrasonic method and infrared imaging were used as non-destructive techniques, and then the
samples were cut from the welded plate using water-jet, in
order to perform microscopic analyses of the cross-section
in the joint area. It was observed that a good-quality welded
joint was obtained, and that the selected explosive may find
further application in this area. However, certain nonwelded area was observed, encouraging future modification
of the welding procedure set-up., Cilj ove studije je ispitivanje mogućnosti upotrebe industrijskog eksploziva Amonex, koji pripada grupi eksploziva
male-do-srednje brzine detonacije, za zavarivanje metalnih
materijala. Ovaj eksploziv se sastoji od amonijum nitrata i
TNT-a kao energetskih komponenti i drugih inertnih sastojaka, ima praškastu strukturu i lako se nanosi u željenom
sloju preko metalnih ploča koje se zavaruju. U okviru ovog
istraživanja, Amonex je primenjen na zavarenim pločama
aluminijuma Al 2024 i čelika 1.0216 (oznake prema EN
10027-2). Postupak zavarivanja izveden je na paralelno
postavljenim pločama, nakon čega je izvršen pregled zavarenog spoja. Kao metode IBR korišćene su ultrazvučna
metoda i termovizijsko ispitivanje. Primenom vodenog mlaza
iz zavarene ploče su isečeni uzorci u cilju ispitivanja mikrostrukture poprečnog preseka zavarenog spoja. Uočeno je
da je dobijen kvalitetan zavareni spoj, te da odabrani
eksploziv može naći dalju primenu u ovoj oblasti. Međutim,
takođe su uočene i određene površine nezavarenog područja,
što je nametnulo potrebu za izmenama postavke ovog
postupka zavarivanja.",
publisher = "Društvo za integritet i vek konstrukcija",
journal = "Structural integrity and life",
title = "Properties of aluminium-steel plates explosively welded using Amonex, Osobine eksplozivno zavarenih ploča aluminijuma i čelika upotrebom Amonex eksploziva",
volume = "23",
number = "2",
pages = "141-146",
url = "https://hdl.handle.net/21.15107/rcub_cer_6448"
}

Lazarević, M., Živković, B., Bajić, D., Alil, A., Tomić, L.,& Nedić, B.. (2023). Properties of aluminium-steel plates explosively welded using Amonex. in Structural integrity and life
Društvo za integritet i vek konstrukcija., 23(2), 141-146.
https://hdl.handle.net/21.15107/rcub_cer_6448

Lazarević M, Živković B, Bajić D, Alil A, Tomić L, Nedić B. Properties of aluminium-steel plates explosively welded using Amonex. in Structural integrity and life. 2023;23(2):141-146.
https://hdl.handle.net/21.15107/rcub_cer_6448 .

Lazarević, Miloš, Živković, Bogdan, Bajić, Danica, Alil, Ana, Tomić, Ljubiša, Nedić, Bogdan, "Properties of aluminium-steel plates explosively welded using Amonex" in Structural integrity and life, 23, no. 2 (2023):141-146,
https://hdl.handle.net/21.15107/rcub_cer_6448 .

TY  - JOUR
AU  - Knežević, Dragan
AU  - Radojković, Bojana
AU  - Ristić, Slavica
AU  - Polić, Suzana R.
AU  - Janićijević, Milovan
AU  - Tomić, Ljubiša
AU  - Jegdić, Bore
PY  - 2021
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/3978
AB  - Temperature  distribution  induced  by  laser  radiation  is  a  very  important 
parameter for an efficient and safe application of lasers in different ceramic 
processing  techniques.  This  paper  presents  the  results  of  an  infrared 
thermography (IRT) application for monitoring temperature distribution on 
a ceramic surface during Nd: YAG laser irradiation with different fluences 
and 8ns pulse duration. FLIR, E40 and SC7200 IR cameras were used with 
the  aim  of  recording  the  maximum  temperature  in  the  irradiated  zones.  It 
was  expected  that  IRT  could  give  some  information  related  to  the  heat 
affected zone and possible damage to the base material; however, the results 
have  shown  that  IR  cameras,  even  those  with  high  performance  such  as 
SC7200,  cannot  record  the  maximum  temperature  value  at  the  moment  of 
laser  operation,  but  only  the  average  temperature  of  the  bulk  sample 
material  after  laser  pulses.  The  results  of  the  numerical  simulation  have 
confirmed the value of the thermographic measurements. The microstructure 
and  micromorphology  of  the  ceramic  surface  before  and  after  the  laser 
treatment  were  analysed  by  optical  and  scanning  electron  microscopy  as 
well  as  by  examining  the  roughness  of  the  irradiated  and  non-  irradiated 
surfaces,  while  the  micromechanical  changes  were  analysed  by  comparing 
the micro-hardness of the irradiated and non-exposed surfaces.
PB  - Vinča Institute of Nuclear Sciences, Belgrade
T2  - Thermal Science
T1  - Monitoring of a ceramic surface temperature field induced by pulsed Nd: YAG laser
VL  - 25
IS  - 1B
SP  - 567
EP  - 578
DO  - 10.2298/TSCI190811425K
ER  - 

@article{
author = "Knežević, Dragan and Radojković, Bojana and Ristić, Slavica and Polić, Suzana R. and Janićijević, Milovan and Tomić, Ljubiša and Jegdić, Bore",
year = "2021",
abstract = "Temperature  distribution  induced  by  laser  radiation  is  a  very  important 
parameter for an efficient and safe application of lasers in different ceramic 
processing  techniques.  This  paper  presents  the  results  of  an  infrared 
thermography (IRT) application for monitoring temperature distribution on 
a ceramic surface during Nd: YAG laser irradiation with different fluences 
and 8ns pulse duration. FLIR, E40 and SC7200 IR cameras were used with 
the  aim  of  recording  the  maximum  temperature  in  the  irradiated  zones.  It 
was  expected  that  IRT  could  give  some  information  related  to  the  heat 
affected zone and possible damage to the base material; however, the results 
have  shown  that  IR  cameras,  even  those  with  high  performance  such  as 
SC7200,  cannot  record  the  maximum  temperature  value  at  the  moment  of 
laser  operation,  but  only  the  average  temperature  of  the  bulk  sample 
material  after  laser  pulses.  The  results  of  the  numerical  simulation  have 
confirmed the value of the thermographic measurements. The microstructure 
and  micromorphology  of  the  ceramic  surface  before  and  after  the  laser 
treatment  were  analysed  by  optical  and  scanning  electron  microscopy  as 
well  as  by  examining  the  roughness  of  the  irradiated  and  non-  irradiated 
surfaces,  while  the  micromechanical  changes  were  analysed  by  comparing 
the micro-hardness of the irradiated and non-exposed surfaces.",
publisher = "Vinča Institute of Nuclear Sciences, Belgrade",
journal = "Thermal Science",
title = "Monitoring of a ceramic surface temperature field induced by pulsed Nd: YAG laser",
volume = "25",
number = "1B",
pages = "567-578",
doi = "10.2298/TSCI190811425K"
}

Knežević, D., Radojković, B., Ristić, S., Polić, S. R., Janićijević, M., Tomić, L.,& Jegdić, B.. (2021). Monitoring of a ceramic surface temperature field induced by pulsed Nd: YAG laser. in Thermal Science
Vinča Institute of Nuclear Sciences, Belgrade., 25(1B), 567-578.
https://doi.org/10.2298/TSCI190811425K

Knežević D, Radojković B, Ristić S, Polić SR, Janićijević M, Tomić L, Jegdić B. Monitoring of a ceramic surface temperature field induced by pulsed Nd: YAG laser. in Thermal Science. 2021;25(1B):567-578.
doi:10.2298/TSCI190811425K .

Knežević, Dragan, Radojković, Bojana, Ristić, Slavica, Polić, Suzana R., Janićijević, Milovan, Tomić, Ljubiša, Jegdić, Bore, "Monitoring of a ceramic surface temperature field induced by pulsed Nd: YAG laser" in Thermal Science, 25, no. 1B (2021):567-578,
https://doi.org/10.2298/TSCI190811425K . .

TY  - CONF
AU  - Knežević, Dragan
AU  - Ristić, Slavica
AU  - Polić, Suzana R.
AU  - Radojković, Bojana
AU  - Tomić, Ljubiša
PY  - 2020
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/4076
AB  - This  paper  presents  the  results  of  an  infrared  thermography  (IRT)  application  for  monitoring  temperature 
distribution on a ceramic surface during Nd: YAG laser irradiation. The laser operated in the Q-switch mode with λ= 
1064 nm. The duration of a pulse was τ = 8 ns. The repetition rate was f  l = 1-20 Hz. FLIR, E40 and SC7200 IR cameras 
were used. Recording  of the  maximum  temperature  in  the  irradiated  zones is very important  information  related  
to  the damage threshold of materials.  The tested sample is a piece of a ceramic tile. A large number of factors affect 
determination of the maximum temperature in the very fast processes as it is irradiation with laser pulse duration of 8 
ns.  One of them is the camera integration time. The experimental results have  shown  that  IR  cameras,  even  those  
with  high  performance  such  as SC7200,  cannot  record  the  maximum  temperature  value  at  the  moment  of laser  
operation,  but  only  the  average  temperature  of  the  bulk  sample material  after  laser  pulses.   The microstructure 
and  micromorphology  of  the  ceramic  surface  after  the  laser treatment  were  analyzed  by  optical  and  scanning  
electron  microscopy.
PB  - Belgrade : Military Technical Institute
C3  - Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020
T1  - Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics
VL  - 9
SP  - 417
EP  - 423
UR  - https://hdl.handle.net/21.15107/rcub_cer_4076
ER  - 

@conference{
author = "Knežević, Dragan and Ristić, Slavica and Polić, Suzana R. and Radojković, Bojana and Tomić, Ljubiša",
year = "2020",
abstract = "This  paper  presents  the  results  of  an  infrared  thermography  (IRT)  application  for  monitoring  temperature 
distribution on a ceramic surface during Nd: YAG laser irradiation. The laser operated in the Q-switch mode with λ= 
1064 nm. The duration of a pulse was τ = 8 ns. The repetition rate was f  l = 1-20 Hz. FLIR, E40 and SC7200 IR cameras 
were used. Recording  of the  maximum  temperature  in  the  irradiated  zones is very important  information  related  
to  the damage threshold of materials.  The tested sample is a piece of a ceramic tile. A large number of factors affect 
determination of the maximum temperature in the very fast processes as it is irradiation with laser pulse duration of 8 
ns.  One of them is the camera integration time. The experimental results have  shown  that  IR  cameras,  even  those  
with  high  performance  such  as SC7200,  cannot  record  the  maximum  temperature  value  at  the  moment  of laser  
operation,  but  only  the  average  temperature  of  the  bulk  sample material  after  laser  pulses.   The microstructure 
and  micromorphology  of  the  ceramic  surface  after  the  laser treatment  were  analyzed  by  optical  and  scanning  
electron  microscopy.",
publisher = "Belgrade : Military Technical Institute",
journal = "Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020",
title = "Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics",
volume = "9",
pages = "417-423",
url = "https://hdl.handle.net/21.15107/rcub_cer_4076"
}

Knežević, D., Ristić, S., Polić, S. R., Radojković, B.,& Tomić, L.. (2020). Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics. in Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020
Belgrade : Military Technical Institute., 9, 417-423.
https://hdl.handle.net/21.15107/rcub_cer_4076

Knežević D, Ristić S, Polić SR, Radojković B, Tomić L. Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics. in Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020. 2020;9:417-423.
https://hdl.handle.net/21.15107/rcub_cer_4076 .

Knežević, Dragan, Ristić, Slavica, Polić, Suzana R., Radojković, Bojana, Tomić, Ljubiša, "Influence of IR camera integration time on the accuracy of Tmax determination during laser interaction with ceramics" in Proceedings - 9th International Scientific Conference od Defensive Technologies OTEH 2020, Belgrade, 15-16 october 2020, 9 (2020):417-423,
https://hdl.handle.net/21.15107/rcub_cer_4076 .