TY  - JOUR
AU  - Kovacević, Tihomir
AU  - Rusmirović, Jelena D.
AU  - Tomić, Nataša
AU  - Mladenović, Goran
AU  - Milošević, Miloš
AU  - Mitrović, Nenad
AU  - Marinković, Aleksandar
PY  - 2019
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3089
AB  - The investigation of the influence of acid/base treatment and addition level of non-metallic fractions (NMFs), obtained by processing of printed circuit boards, on the mechanical properties and shrinkage of unsaturated polyester resin (UPR)-based composites was main topic presented in this paper. NMF particles were treated using four different oxidative/etching agents: H2SO4/KMnO4 (NMF1), H2SO4/HNO3 (NMF2), HNO3 (NMF3), and NaOH (NMF4). Treated NMF(1-4) particles were characterized using fourier transform infrared, Boehm titration, optical microscopy and SEM analysis. Tensile strength and micro Vickers hardness of UPR/NMF(1-4) composites were the most improved with addition of 0.5wt% of filler, for 5.9-24.7%, in comparison to composite filled with non-treated NMF particles. Cross-linking density (nu), storage, and loss modulus (G' and G''), damping factor (tan delta) and glass transition temperature (T-g) of the composites were determined from the dynamic-mechanical analysis (DMA) testing. Shrinkage measurements, performed using Aramis 6.2.0, showed significant improvement in shrinkage reducing, for 17.8-30.6%, by introduction the oxidized NMF particles. Qualitative/quantitative evaluation of NMF(1-4) surface functionalities helped in understanding their influences on mechanical, DMA and shrinkage properties change of studied composites. POLYM. COMPOS., 40:1170-1186, 2019.
PB  - Wiley, Hoboken
T2  - Polymer Composites
T1  - Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites
EP  - 1186
IS  - 3
SP  - 1170
VL  - 40
DO  - 10.1002/pc.24827
ER  - 

@article{
author = "Kovacević, Tihomir and Rusmirović, Jelena D. and Tomić, Nataša and Mladenović, Goran and Milošević, Miloš and Mitrović, Nenad and Marinković, Aleksandar",
year = "2019",
abstract = "The investigation of the influence of acid/base treatment and addition level of non-metallic fractions (NMFs), obtained by processing of printed circuit boards, on the mechanical properties and shrinkage of unsaturated polyester resin (UPR)-based composites was main topic presented in this paper. NMF particles were treated using four different oxidative/etching agents: H2SO4/KMnO4 (NMF1), H2SO4/HNO3 (NMF2), HNO3 (NMF3), and NaOH (NMF4). Treated NMF(1-4) particles were characterized using fourier transform infrared, Boehm titration, optical microscopy and SEM analysis. Tensile strength and micro Vickers hardness of UPR/NMF(1-4) composites were the most improved with addition of 0.5wt% of filler, for 5.9-24.7%, in comparison to composite filled with non-treated NMF particles. Cross-linking density (nu), storage, and loss modulus (G' and G''), damping factor (tan delta) and glass transition temperature (T-g) of the composites were determined from the dynamic-mechanical analysis (DMA) testing. Shrinkage measurements, performed using Aramis 6.2.0, showed significant improvement in shrinkage reducing, for 17.8-30.6%, by introduction the oxidized NMF particles. Qualitative/quantitative evaluation of NMF(1-4) surface functionalities helped in understanding their influences on mechanical, DMA and shrinkage properties change of studied composites. POLYM. COMPOS., 40:1170-1186, 2019.",
publisher = "Wiley, Hoboken",
journal = "Polymer Composites",
title = "Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites",
pages = "1186-1170",
number = "3",
volume = "40",
doi = "10.1002/pc.24827"
}

Kovacević, T., Rusmirović, J. D., Tomić, N., Mladenović, G., Milošević, M., Mitrović, N.,& Marinković, A.. (2019). Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites. in Polymer Composites
Wiley, Hoboken., 40(3), 1170-1186.
https://doi.org/10.1002/pc.24827

Kovacević T, Rusmirović JD, Tomić N, Mladenović G, Milošević M, Mitrović N, Marinković A. Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites. in Polymer Composites. 2019;40(3):1170-1186.
doi:10.1002/pc.24827 .

Kovacević, Tihomir, Rusmirović, Jelena D., Tomić, Nataša, Mladenović, Goran, Milošević, Miloš, Mitrović, Nenad, Marinković, Aleksandar, "Effects of oxidized/treated non-metallic fillers obtained from waste printed circuit boards on mechanical properties and shrinkage of unsaturated polyester-based composites" in Polymer Composites, 40, no. 3 (2019):1170-1186,
https://doi.org/10.1002/pc.24827 . .

TY  - CONF
AU  - Manojlović, Vaso
AU  - Gavrilovski, Milorad
AU  - Kamberović, Željko
AU  - Momčilović, Dejan B.
PY  - 2018
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7502
AB  - Aluminothermic welding of rail is still a unique method for joining the rails because of its flexibilityand ease of performance, both during the reconstruction and construction of a new track, as well asin the ongoing maintenance of the continuity of the track. Although this procedure is applying foralmost hundred years with constant improvements, it still has serious shortcomings. Theshortcomings primarily relate to quality variability, which directly dependent on the training of theoperator and their compliance with the prescribed instructions and procedures, during the weldingprocess. The most common working mistakes are very similar to the casting failures that occur duringthe usual casting of steel. The process is susceptible because the welded joint is in constant straincondition caused by the structural differences between primary material and filler material (thermitesteel). This paper presents some working failures on the samples from the track in exploitation, aswell as the analysis of the causes of their formation. Also, the innovative way of performingaluminum welding of the rail was shown, which minimizes working mistakes and prevents workingfailures. The results of the quality testing of welded joints are done according to the EU standards.They pointed out that the implementation of this procedure provides greater safety of rail transportas well as its coherence because it significantly reduces the impact of faults of welding teams.
PB  - University of Zagreb, Faculty of Metallurgy
C3  - Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018
T1  - Common failures in aluminothermic welding process and proposal for their prevention
EP  - 349
SP  - 343
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7502
ER  - 

@conference{
author = "Manojlović, Vaso and Gavrilovski, Milorad and Kamberović, Željko and Momčilović, Dejan B.",
year = "2018",
abstract = "Aluminothermic welding of rail is still a unique method for joining the rails because of its flexibilityand ease of performance, both during the reconstruction and construction of a new track, as well asin the ongoing maintenance of the continuity of the track. Although this procedure is applying foralmost hundred years with constant improvements, it still has serious shortcomings. Theshortcomings primarily relate to quality variability, which directly dependent on the training of theoperator and their compliance with the prescribed instructions and procedures, during the weldingprocess. The most common working mistakes are very similar to the casting failures that occur duringthe usual casting of steel. The process is susceptible because the welded joint is in constant straincondition caused by the structural differences between primary material and filler material (thermitesteel). This paper presents some working failures on the samples from the track in exploitation, aswell as the analysis of the causes of their formation. Also, the innovative way of performingaluminum welding of the rail was shown, which minimizes working mistakes and prevents workingfailures. The results of the quality testing of welded joints are done according to the EU standards.They pointed out that the implementation of this procedure provides greater safety of rail transportas well as its coherence because it significantly reduces the impact of faults of welding teams.",
publisher = "University of Zagreb, Faculty of Metallurgy",
journal = "Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018",
title = "Common failures in aluminothermic welding process and proposal for their prevention",
pages = "349-343",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7502"
}

Manojlović, V., Gavrilovski, M., Kamberović, Ž.,& Momčilović, D. B.. (2018). Common failures in aluminothermic welding process and proposal for their prevention. in Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018
University of Zagreb, Faculty of Metallurgy., 343-349.
https://hdl.handle.net/21.15107/rcub_machinery_7502

Manojlović V, Gavrilovski M, Kamberović Ž, Momčilović DB. Common failures in aluminothermic welding process and proposal for their prevention. in Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018. 2018;:343-349.
https://hdl.handle.net/21.15107/rcub_machinery_7502 .

Manojlović, Vaso, Gavrilovski, Milorad, Kamberović, Željko, Momčilović, Dejan B., "Common failures in aluminothermic welding process and proposal for their prevention" in Proceedings of the 17th INTERNATIONAL FOUNDRYMEN CONFERENCE, Hi-tech casting solution and knowledge based engineering Opatija, 2018 (2018):343-349,
https://hdl.handle.net/21.15107/rcub_machinery_7502 .