Devečerski, Aleksandar B.

Link to this page

Authority KeyName Variants
orcid::0000-0001-7282-7400
  • Devečerski, Aleksandar B. (2)
  • Devečerski, Aleksandar (1)

Author's Bibliography

Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings

Vlahović, Milica; Alil, Ana; Devečerski, Aleksandar B.; Živojinović, Dragana; Volkov Husović, Tatjana

(MDPI, 2023)

TY  - JOUR
AU  - Vlahović, Milica
AU  - Alil, Ana
AU  - Devečerski, Aleksandar B.
AU  - Živojinović, Dragana
AU  - Volkov Husović, Tatjana
PY  - 2023
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/6463
AB  - In many industrial processes that include fluid flow, cavitation erosion of different engineering
structures (pumps, turbines, water levels, valves, etc.) during their operation is expected. Metallic,
ceramic, and composite materials are usual candidates considered for application in such extreme
conditions. In this study, the idea is to synthesize refractory ceramic material based on talc with
the addition of zeolite for utilization as protective coatings in cavitating conditions. Two talc-based
refractories with zeolites from two Serbian deposits were produced. The behaviors of the samples
in simulated cavitation conditions were examined by an advanced non-destructive methodology
consisting of monitoring mass loss and surface degradation using image analysis compiled with
principal component analysis (PCA), interior degradation by ultrasonic measurements, and the
microstructure by a scanning electron microscope (SEM). Lower mass loss, surface degradation level,
and modeled strength decrease indicated better cavitation resistance of the sample with Igros zeolite,
whereby measured strength values validated the model. For the chosen critical strength, the critical
cavitation period as well as critical morphological descriptors, Area and Diameter (max and min),
were determined. A Young’s elasticity modulus decrease indicated that surface damage influence
progressed towards interior of the material. It can be concluded that the proposed methodology
approach is efficient and reliable in predicting the materials’ service life in extreme conditions.
PB  - MDPI
T2  - Materials
T1  - Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings
VL  - 16
IS  - 16
SP  - 5577
DO  - 10.3390/ma16165577
ER  - 
@article{
author = "Vlahović, Milica and Alil, Ana and Devečerski, Aleksandar B. and Živojinović, Dragana and Volkov Husović, Tatjana",
year = "2023",
abstract = "In many industrial processes that include fluid flow, cavitation erosion of different engineering
structures (pumps, turbines, water levels, valves, etc.) during their operation is expected. Metallic,
ceramic, and composite materials are usual candidates considered for application in such extreme
conditions. In this study, the idea is to synthesize refractory ceramic material based on talc with
the addition of zeolite for utilization as protective coatings in cavitating conditions. Two talc-based
refractories with zeolites from two Serbian deposits were produced. The behaviors of the samples
in simulated cavitation conditions were examined by an advanced non-destructive methodology
consisting of monitoring mass loss and surface degradation using image analysis compiled with
principal component analysis (PCA), interior degradation by ultrasonic measurements, and the
microstructure by a scanning electron microscope (SEM). Lower mass loss, surface degradation level,
and modeled strength decrease indicated better cavitation resistance of the sample with Igros zeolite,
whereby measured strength values validated the model. For the chosen critical strength, the critical
cavitation period as well as critical morphological descriptors, Area and Diameter (max and min),
were determined. A Young’s elasticity modulus decrease indicated that surface damage influence
progressed towards interior of the material. It can be concluded that the proposed methodology
approach is efficient and reliable in predicting the materials’ service life in extreme conditions.",
publisher = "MDPI",
journal = "Materials",
title = "Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings",
volume = "16",
number = "16",
pages = "5577",
doi = "10.3390/ma16165577"
}
Vlahović, M., Alil, A., Devečerski, A. B., Živojinović, D.,& Volkov Husović, T.. (2023). Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings. in Materials
MDPI., 16(16), 5577.
https://doi.org/10.3390/ma16165577
Vlahović M, Alil A, Devečerski AB, Živojinović D, Volkov Husović T. Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings. in Materials. 2023;16(16):5577.
doi:10.3390/ma16165577 .
Vlahović, Milica, Alil, Ana, Devečerski, Aleksandar B., Živojinović, Dragana, Volkov Husović, Tatjana, "Non-Destructive Examination for Cavitation Resistance of Talc-Based Refractories with Different Zeolite Types Intended for Protective Coatings" in Materials, 16, no. 16 (2023):5577,
https://doi.org/10.3390/ma16165577 . .
1

Economizer water-wall damages initiated by feedwater impurities

Vidojković, Sonja; Onjia, Antonije E.; Devečerski, Aleksandar B.; Grahovac, Nebojsa N; Nastasović, Aleksandra

(Association of Chemical Engineers of Serbia, 2014)

TY  - JOUR
AU  - Vidojković, Sonja
AU  - Onjia, Antonije E.
AU  - Devečerski, Aleksandar B.
AU  - Grahovac, Nebojsa N
AU  - Nastasović, Aleksandra
PY  - 2014
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/1474
AB  - The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.
PB  - Association of Chemical Engineers of Serbia
T2  - Hemijska industrija
T1  - Economizer water-wall damages initiated by feedwater impurities
VL  - 68
IS  - 5
SP  - 559
EP  - 563
DO  - 10.2298/HEMIND130715082V
ER  - 
@article{
author = "Vidojković, Sonja and Onjia, Antonije E. and Devečerski, Aleksandar B. and Grahovac, Nebojsa N and Nastasović, Aleksandra",
year = "2014",
abstract = "The main causes of efficiency loss in thermal power plants are boiler tube failures that diminish unit reliability and availability, and raise the cost of the electric energy. For that reason, the regular examination of boiler tubes is indispensable measure for prevention of future malfunctions of power units. The microscopic examination of economizer's inner wall microstructure, the analysis of chemical composition of deposit using X-ray diffraction (XRD) and scanning electron microscopy/energy dispersive spectroscopy (SEM/EDS) have been performed in a subcritical power plant. Stress corrosion cracking, pitting corrosion, destroyed protective magnetite layer, presence of magnetite and hematite in deposit and corrosive impurities within the cracks have indicated the effect of inadequate quality of feedwater that cannot entirely ensure reliable operation of the boiler. It may be stated that maintenance of present boiler does not provide its reliable operation. The extensive chemical control of water/steam cycle was recommended.",
publisher = "Association of Chemical Engineers of Serbia",
journal = "Hemijska industrija",
title = "Economizer water-wall damages initiated by feedwater impurities",
volume = "68",
number = "5",
pages = "559-563",
doi = "10.2298/HEMIND130715082V"
}
Vidojković, S., Onjia, A. E., Devečerski, A. B., Grahovac, N. N.,& Nastasović, A.. (2014). Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija
Association of Chemical Engineers of Serbia., 68(5), 559-563.
https://doi.org/10.2298/HEMIND130715082V
Vidojković S, Onjia AE, Devečerski AB, Grahovac NN, Nastasović A. Economizer water-wall damages initiated by feedwater impurities. in Hemijska industrija. 2014;68(5):559-563.
doi:10.2298/HEMIND130715082V .
Vidojković, Sonja, Onjia, Antonije E., Devečerski, Aleksandar B., Grahovac, Nebojsa N, Nastasović, Aleksandra, "Economizer water-wall damages initiated by feedwater impurities" in Hemijska industrija, 68, no. 5 (2014):559-563,
https://doi.org/10.2298/HEMIND130715082V . .
4
3
4

Nondestructive evaluation of degradation level for refractory and polymer composite materials in extreme conditions

Volkov Husović, Tatjana; Martinović, Sanja; Vlahović, Milica; Majstorović, Jelena; Devečerski, Aleksandar; Matović, Branko

(Institute for Multidisciplinary Research, 2013)

TY  - CONF
AU  - Volkov Husović, Tatjana
AU  - Martinović, Sanja
AU  - Vlahović, Milica
AU  - Majstorović, Jelena
AU  - Devečerski, Aleksandar
AU  - Matović, Branko
PY  - 2013
UR  - https://cer.ihtm.bg.ac.rs/handle/123456789/7314
AB  - Non-destructive evaluation of degradation level in extreme condition caused by: thermal shock and cavitation erosion for refractory concrete (LCC) and durability of sulfur concrete in aggressive environment were goal of our investigation. Nondestructive testing methods such are image analysis and UPVT were used. Thermal stability of refractory LCC samples was tested using standard laboratory procedure of water quench test (ICS 81.080 SRPS B.D8.308 former JUS B. D8. 306). Program for image analysis was applied for monitoring destruction at the surface and bulk of the sample before and during testing. Ultrasonic pulse velocity testing (UPVT) was applied to measure ultrasonic velocities changes during testing. Cavitation damage ratio was monitored using mass loss during experiment as well as image analysis of the photographs of the samples before and during testing. Image analysis using different software allowed to measure ratio of the damaged surface during cavitation erosion. Results were presented as surface erosion ratio. In order to predict service life of the sulfur–polymer composite, the samples were subjected to the induced destruction using 10% hydrochloric acid solution. Sulfur–polymer composite showed limited mechanical strength and mass loss, while physico-mechanical properties of Portland cement composite regressed rapidly. The Image Pro Plus software was used for surface destruction monitoring.
PB  - Institute for Multidisciplinary Research
C3  - Programme and Book of Abstracts - 2nd Conference of the Serbian Ceramic Society (2CSCS 2013), June 5-7, 2013  Belgrade, Serbia
T1  - Nondestructive evaluation of degradation level for refractory and polymer composite materials in extreme conditions
SP  - 38
EP  - 38
UR  - https://hdl.handle.net/21.15107/rcub_cer_7314
ER  - 
@conference{
author = "Volkov Husović, Tatjana and Martinović, Sanja and Vlahović, Milica and Majstorović, Jelena and Devečerski, Aleksandar and Matović, Branko",
year = "2013",
abstract = "Non-destructive evaluation of degradation level in extreme condition caused by: thermal shock and cavitation erosion for refractory concrete (LCC) and durability of sulfur concrete in aggressive environment were goal of our investigation. Nondestructive testing methods such are image analysis and UPVT were used. Thermal stability of refractory LCC samples was tested using standard laboratory procedure of water quench test (ICS 81.080 SRPS B.D8.308 former JUS B. D8. 306). Program for image analysis was applied for monitoring destruction at the surface and bulk of the sample before and during testing. Ultrasonic pulse velocity testing (UPVT) was applied to measure ultrasonic velocities changes during testing. Cavitation damage ratio was monitored using mass loss during experiment as well as image analysis of the photographs of the samples before and during testing. Image analysis using different software allowed to measure ratio of the damaged surface during cavitation erosion. Results were presented as surface erosion ratio. In order to predict service life of the sulfur–polymer composite, the samples were subjected to the induced destruction using 10% hydrochloric acid solution. Sulfur–polymer composite showed limited mechanical strength and mass loss, while physico-mechanical properties of Portland cement composite regressed rapidly. The Image Pro Plus software was used for surface destruction monitoring.",
publisher = "Institute for Multidisciplinary Research",
journal = "Programme and Book of Abstracts - 2nd Conference of the Serbian Ceramic Society (2CSCS 2013), June 5-7, 2013  Belgrade, Serbia",
title = "Nondestructive evaluation of degradation level for refractory and polymer composite materials in extreme conditions",
pages = "38-38",
url = "https://hdl.handle.net/21.15107/rcub_cer_7314"
}
Volkov Husović, T., Martinović, S., Vlahović, M., Majstorović, J., Devečerski, A.,& Matović, B.. (2013). Nondestructive evaluation of degradation level for refractory and polymer composite materials in extreme conditions. in Programme and Book of Abstracts - 2nd Conference of the Serbian Ceramic Society (2CSCS 2013), June 5-7, 2013  Belgrade, Serbia
Institute for Multidisciplinary Research., 38-38.
https://hdl.handle.net/21.15107/rcub_cer_7314
Volkov Husović T, Martinović S, Vlahović M, Majstorović J, Devečerski A, Matović B. Nondestructive evaluation of degradation level for refractory and polymer composite materials in extreme conditions. in Programme and Book of Abstracts - 2nd Conference of the Serbian Ceramic Society (2CSCS 2013), June 5-7, 2013  Belgrade, Serbia. 2013;:38-38.
https://hdl.handle.net/21.15107/rcub_cer_7314 .
Volkov Husović, Tatjana, Martinović, Sanja, Vlahović, Milica, Majstorović, Jelena, Devečerski, Aleksandar, Matović, Branko, "Nondestructive evaluation of degradation level for refractory and polymer composite materials in extreme conditions" in Programme and Book of Abstracts - 2nd Conference of the Serbian Ceramic Society (2CSCS 2013), June 5-7, 2013  Belgrade, Serbia (2013):38-38,
https://hdl.handle.net/21.15107/rcub_cer_7314 .