TY  - JOUR
AU  - Miladinović, Slavica
AU  - Stojanović, Blaža
AU  - Gajević, Sandra
AU  - Vencl, Aleksandar
PY  - 2023
UR  - https://link.springer.com/article/10.1007/s12633-022-02216-2
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7323
AB  - Fast development of automotive industry increases demands in terms of fuel efficiency, reduction of weight and increased reliability of constructions. Nowadays major materials for production of pistons are cast iron, Aluminum–Silicon (Al-Si) alloys and some composites. Use of hypereutectic Al-Si alloys is increasing in automobile and aerospace industry. Application of hypereutectic Al-Si alloys with more than 12wt.% of Si is due to their properties like good thermal and electrical conductivity, high strength to weight ratio, good corrosion resistance and others. Higher Si content in the alloy can affect its properties; it increases size of primary Si and hardness but reduces machinability. In order to improve their properties and meet the high requirements of the industry, usually, grain refinement of these alloys is needed. Some of the ways to obtain grain refinement and potentially improve hypereutectic Al-Si alloys’ properties are different manufacturing technologies, heat treatments and/or addition of grain refiners like Ni, Mg, Sr, Sn and many others. There is a large amount of manufacturing technologies used for hypereutectic Al-Si alloys, and in this paper will be considered most of them, as well as their influence on microstructure, mechanical and tribological properties of hypereutectic Al-Si alloys and composites. Also, the effect of higher Si content in the hypereutectic Al-Si alloy on its properties will be considered, as well as addition of modificator/refiner or reinforcement. Liquid state processes are usually used for hypereutectic Al-Si alloys, but some newer (semi-solid and solid processes) have emerged that give better microstructure, mechanical and tribological properties, and those are tixocasting, rheocasting and selective laser melting. Based on available investigations tixocasting gives promising results, the only drawback is the price and in the future, investigations should be oriented to finding ways for its reduction.
T2  - Silicon
T1  - Hypereutectic aluminum alloys and composites: A review
EP  - 2527
IS  - 6
SP  - 2507
VL  - 15
DO  - 10.1007/s12633-022-02216-2
ER  - 

@article{
author = "Miladinović, Slavica and Stojanović, Blaža and Gajević, Sandra and Vencl, Aleksandar",
year = "2023",
abstract = "Fast development of automotive industry increases demands in terms of fuel efficiency, reduction of weight and increased reliability of constructions. Nowadays major materials for production of pistons are cast iron, Aluminum–Silicon (Al-Si) alloys and some composites. Use of hypereutectic Al-Si alloys is increasing in automobile and aerospace industry. Application of hypereutectic Al-Si alloys with more than 12wt.% of Si is due to their properties like good thermal and electrical conductivity, high strength to weight ratio, good corrosion resistance and others. Higher Si content in the alloy can affect its properties; it increases size of primary Si and hardness but reduces machinability. In order to improve their properties and meet the high requirements of the industry, usually, grain refinement of these alloys is needed. Some of the ways to obtain grain refinement and potentially improve hypereutectic Al-Si alloys’ properties are different manufacturing technologies, heat treatments and/or addition of grain refiners like Ni, Mg, Sr, Sn and many others. There is a large amount of manufacturing technologies used for hypereutectic Al-Si alloys, and in this paper will be considered most of them, as well as their influence on microstructure, mechanical and tribological properties of hypereutectic Al-Si alloys and composites. Also, the effect of higher Si content in the hypereutectic Al-Si alloy on its properties will be considered, as well as addition of modificator/refiner or reinforcement. Liquid state processes are usually used for hypereutectic Al-Si alloys, but some newer (semi-solid and solid processes) have emerged that give better microstructure, mechanical and tribological properties, and those are tixocasting, rheocasting and selective laser melting. Based on available investigations tixocasting gives promising results, the only drawback is the price and in the future, investigations should be oriented to finding ways for its reduction.",
journal = "Silicon",
title = "Hypereutectic aluminum alloys and composites: A review",
pages = "2527-2507",
number = "6",
volume = "15",
doi = "10.1007/s12633-022-02216-2"
}

Miladinović, S., Stojanović, B., Gajević, S.,& Vencl, A.. (2023). Hypereutectic aluminum alloys and composites: A review. in Silicon, 15(6), 2507-2527.
https://doi.org/10.1007/s12633-022-02216-2

Miladinović S, Stojanović B, Gajević S, Vencl A. Hypereutectic aluminum alloys and composites: A review. in Silicon. 2023;15(6):2507-2527.
doi:10.1007/s12633-022-02216-2 .

Miladinović, Slavica, Stojanović, Blaža, Gajević, Sandra, Vencl, Aleksandar, "Hypereutectic aluminum alloys and composites: A review" in Silicon, 15, no. 6 (2023):2507-2527,
https://doi.org/10.1007/s12633-022-02216-2 . .

TY  - JOUR
AU  - Stojanović, Blaža
AU  - Gajević, Sandra
AU  - Miloradović, Nenad
AU  - Nikolić, Ružica
AU  - Miladinović, Slavica
AU  - Svoboda, Petr
AU  - Vencl, Aleksandar
PY  - 2023
UR  - https://komunikacie.uniza.sk/artkey/csl-202303-0017_comparative-analysis-of-hybrid-composites-based-on-a356-and-za-27-alloys-regarding-their-tribological-behaviour.php
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7337
AB  - The comparative analysis of the two hybrid composites, obtained by the compocasting process, based on A356 and ZA-27 alloys and reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % graphite (Gr) is presented. Optimisation of their tribological behaviour was performed by the Taguchi method and the artificial neural network (ANN). Tribological tests were performed on a block-on-disk tribometer, at three sliding speeds, three normal loads and a sliding distance of 600 m, without lubrication. Results obtained by the ANOVA showed that the hybrid composites based on A356 alloy have the better wear resistance and that the composite reinforced with 10 wt. % SiC and 1 wt. % Gr has the lowest wear rate. The lowest coefficient of friction was obtained for a composite based on ZA-27 alloy reinforced with 10 wt. % SiC, at a normal load of 10 N and sliding speed of 1 m/s.
T2  - Komunikácie – Communications
T1  - Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour
EP  - B227
IS  - 3
SP  - B215
VL  - 25
DO  - 10.26552/com.C.2023.056
ER  - 

@article{
author = "Stojanović, Blaža and Gajević, Sandra and Miloradović, Nenad and Nikolić, Ružica and Miladinović, Slavica and Svoboda, Petr and Vencl, Aleksandar",
year = "2023",
abstract = "The comparative analysis of the two hybrid composites, obtained by the compocasting process, based on A356 and ZA-27 alloys and reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % graphite (Gr) is presented. Optimisation of their tribological behaviour was performed by the Taguchi method and the artificial neural network (ANN). Tribological tests were performed on a block-on-disk tribometer, at three sliding speeds, three normal loads and a sliding distance of 600 m, without lubrication. Results obtained by the ANOVA showed that the hybrid composites based on A356 alloy have the better wear resistance and that the composite reinforced with 10 wt. % SiC and 1 wt. % Gr has the lowest wear rate. The lowest coefficient of friction was obtained for a composite based on ZA-27 alloy reinforced with 10 wt. % SiC, at a normal load of 10 N and sliding speed of 1 m/s.",
journal = "Komunikácie – Communications",
title = "Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour",
pages = "B227-B215",
number = "3",
volume = "25",
doi = "10.26552/com.C.2023.056"
}

Stojanović, B., Gajević, S., Miloradović, N., Nikolić, R., Miladinović, S., Svoboda, P.,& Vencl, A.. (2023). Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour. in Komunikácie – Communications, 25(3), B215-B227.
https://doi.org/10.26552/com.C.2023.056

Stojanović B, Gajević S, Miloradović N, Nikolić R, Miladinović S, Svoboda P, Vencl A. Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour. in Komunikácie – Communications. 2023;25(3):B215-B227.
doi:10.26552/com.C.2023.056 .

Stojanović, Blaža, Gajević, Sandra, Miloradović, Nenad, Nikolić, Ružica, Miladinović, Slavica, Svoboda, Petr, Vencl, Aleksandar, "Comparative analysis of hybrid composites based on A356 and ZA-27 alloys regarding their tribological behaviour" in Komunikácie – Communications, 25, no. 3 (2023):B215-B227,
https://doi.org/10.26552/com.C.2023.056 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Svoboda, Petr
AU  - Klančnik, Simon
AU  - But, Adrian
AU  - Vorkapić, Miloš
AU  - Harničárová, Marta
AU  - Stojanović, Blaža
PY  - 2023
UR  - https://www.mdpi.com/2075-4442/11/1/24
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7339
AB  - Three different and very small amounts of alumina (0.2, 0.3 and 0.5 wt. %) in two sizes (approx. 25 and 100 nm) were used to enhance the wear characteristics of ZA-27 alloy-based nanocomposites. Production was realised through mechanical alloying in pre-processing and compocasting processes. Wear tests were under lubricated sliding conditions on a block-on-disc tribometer, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Experimental results were analysed by applying the response surface methodology (RSM) and a suitable mathematical model for the wear rate of tested nanocomposites was developed. Appropriate wear maps were constructed and the wear mechanism is discussed in this paper. The accuracy of the prediction was evaluated with the use of an artificial neural network (ANN). The architecture of the used ANN was 4-5-1 and the obtained overall regression coefficient was 0.98729. The comparison of the predicting methods showed that ANN is more efficient in predicting wear.
T2  - Lubricants
T1  - Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction
IS  - 1
SP  - 24
VL  - 11
DO  - 10.3390/lubricants11010024
ER  - 

@article{
author = "Vencl, Aleksandar and Svoboda, Petr and Klančnik, Simon and But, Adrian and Vorkapić, Miloš and Harničárová, Marta and Stojanović, Blaža",
year = "2023",
abstract = "Three different and very small amounts of alumina (0.2, 0.3 and 0.5 wt. %) in two sizes (approx. 25 and 100 nm) were used to enhance the wear characteristics of ZA-27 alloy-based nanocomposites. Production was realised through mechanical alloying in pre-processing and compocasting processes. Wear tests were under lubricated sliding conditions on a block-on-disc tribometer, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Experimental results were analysed by applying the response surface methodology (RSM) and a suitable mathematical model for the wear rate of tested nanocomposites was developed. Appropriate wear maps were constructed and the wear mechanism is discussed in this paper. The accuracy of the prediction was evaluated with the use of an artificial neural network (ANN). The architecture of the used ANN was 4-5-1 and the obtained overall regression coefficient was 0.98729. The comparison of the predicting methods showed that ANN is more efficient in predicting wear.",
journal = "Lubricants",
title = "Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction",
number = "1",
pages = "24",
volume = "11",
doi = "10.3390/lubricants11010024"
}

Vencl, A., Svoboda, P., Klančnik, S., But, A., Vorkapić, M., Harničárová, M.,& Stojanović, B.. (2023). Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction. in Lubricants, 11(1), 24.
https://doi.org/10.3390/lubricants11010024

Vencl A, Svoboda P, Klančnik S, But A, Vorkapić M, Harničárová M, Stojanović B. Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction. in Lubricants. 2023;11(1):24.
doi:10.3390/lubricants11010024 .

Vencl, Aleksandar, Svoboda, Petr, Klančnik, Simon, But, Adrian, Vorkapić, Miloš, Harničárová, Marta, Stojanović, Blaža, "Influence of Al2O3 nanoparticles addition in ZA-27 alloy-based nanocomposites and soft computing prediction" in Lubricants, 11, no. 1 (2023):24,
https://doi.org/10.3390/lubricants11010024 . .

TY  - CONF
AU  - Gajević, Sandra
AU  - Miladinović, Slavica
AU  - Džunić, Dragan
AU  - Stojanović, Blaža
AU  - Vencl, Aleksandar
PY  - 2023
UR  - http://tribolab.mas.bg.ac.rs/radovi/2023_03.pdf
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/7338
AB  - This paper provides a brief overview on the mechanical and tribological properties of aluminiumbased composites reinforced with various nanoparticles. The amount of reinforcement was, most often, up to 5 % (vol. or wt.). Based on the reviewed results, it can be observed that by increasing the amount of reinforcement, properties such as hardness and density increase significantly. Tribological tests were performed mostly on pin-on-disc tribometers under dry sliding conditions. Composites reinforced with ceramic nanoparticles such as Al2O3, SiC, TiC, TiO2 and TiB2 showed a higher wear resistance than their matrix alloys. The microstructure of the nanocomposites and morphology of the worn surfaces were in most cases studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS).
C3  - 18th International Conference on Tribology – SERBIATRIB '23, Kragujevac (Serbia), 17-19.05.2023, Proceedings
T1  - A review on mechanical and tribological properties of aluminium-based metal matrix nanocomposites
EP  - 230
SP  - 226
UR  - https://hdl.handle.net/21.15107/rcub_machinery_7338
ER  - 

@conference{
author = "Gajević, Sandra and Miladinović, Slavica and Džunić, Dragan and Stojanović, Blaža and Vencl, Aleksandar",
year = "2023",
abstract = "This paper provides a brief overview on the mechanical and tribological properties of aluminiumbased composites reinforced with various nanoparticles. The amount of reinforcement was, most often, up to 5 % (vol. or wt.). Based on the reviewed results, it can be observed that by increasing the amount of reinforcement, properties such as hardness and density increase significantly. Tribological tests were performed mostly on pin-on-disc tribometers under dry sliding conditions. Composites reinforced with ceramic nanoparticles such as Al2O3, SiC, TiC, TiO2 and TiB2 showed a higher wear resistance than their matrix alloys. The microstructure of the nanocomposites and morphology of the worn surfaces were in most cases studied by scanning electron microscopy (SEM), transmission electron microscopy (TEM) and energy dispersive spectroscopy (EDS).",
journal = "18th International Conference on Tribology – SERBIATRIB '23, Kragujevac (Serbia), 17-19.05.2023, Proceedings",
title = "A review on mechanical and tribological properties of aluminium-based metal matrix nanocomposites",
pages = "230-226",
url = "https://hdl.handle.net/21.15107/rcub_machinery_7338"
}

Gajević, S., Miladinović, S., Džunić, D., Stojanović, B.,& Vencl, A.. (2023). A review on mechanical and tribological properties of aluminium-based metal matrix nanocomposites. in 18th International Conference on Tribology – SERBIATRIB '23, Kragujevac (Serbia), 17-19.05.2023, Proceedings, 226-230.
https://hdl.handle.net/21.15107/rcub_machinery_7338

Gajević S, Miladinović S, Džunić D, Stojanović B, Vencl A. A review on mechanical and tribological properties of aluminium-based metal matrix nanocomposites. in 18th International Conference on Tribology – SERBIATRIB '23, Kragujevac (Serbia), 17-19.05.2023, Proceedings. 2023;:226-230.
https://hdl.handle.net/21.15107/rcub_machinery_7338 .

Gajević, Sandra, Miladinović, Slavica, Džunić, Dragan, Stojanović, Blaža, Vencl, Aleksandar, "A review on mechanical and tribological properties of aluminium-based metal matrix nanocomposites" in 18th International Conference on Tribology – SERBIATRIB '23, Kragujevac (Serbia), 17-19.05.2023, Proceedings (2023):226-230,
https://hdl.handle.net/21.15107/rcub_machinery_7338 .

TY  - CONF
AU  - Stojanović, Blaža
AU  - Vencl, Aleksandar
AU  - Skulić, Aleksandar
AU  - Miladinović, Slavica
AU  - Gajević, Sandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4352
AB  - This paper presents the results of experimental research of efficiency of a worm gearbox which was designed for that purpose. The gearbox housing is of a welded construction with side openings, which enables simple assembly and disassembly of worm pairs, bearings and other elements. Two worm pairs with the same geometric characteristics were used for testing, where the worms are made of improved steel 42CrMo4 and the worm gears are made of zinc-aluminum alloy ZA12 and aluminum alloy A356. The values of the efficiency were determined at different operating modes of the gearbox (loads and rotational speeds), where mineral oil with a viscosity of 460 mm2/s was used as a lubricant. According to the previously defined working conditions, the power losses and friction coefficient of the worm gear pairs were calculated. Based on the test results, it is concluded that the values of the efficiency of the worm gear pair 42CrMo4/ZA12 are significantly higher compared to the worm gear pair 42CrMo4/A356, which is the result of lower power losses and lower values of the coefficient of friction.
PB  - University of East Sarajevo, Faculty of Mechanical Engineering
C3  - Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022
T1  - Influence of materials on the efficiency of worm gear transmission
EP  - 409
SP  - 402
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4352
ER  - 

@conference{
author = "Stojanović, Blaža and Vencl, Aleksandar and Skulić, Aleksandar and Miladinović, Slavica and Gajević, Sandra",
year = "2022",
abstract = "This paper presents the results of experimental research of efficiency of a worm gearbox which was designed for that purpose. The gearbox housing is of a welded construction with side openings, which enables simple assembly and disassembly of worm pairs, bearings and other elements. Two worm pairs with the same geometric characteristics were used for testing, where the worms are made of improved steel 42CrMo4 and the worm gears are made of zinc-aluminum alloy ZA12 and aluminum alloy A356. The values of the efficiency were determined at different operating modes of the gearbox (loads and rotational speeds), where mineral oil with a viscosity of 460 mm2/s was used as a lubricant. According to the previously defined working conditions, the power losses and friction coefficient of the worm gear pairs were calculated. Based on the test results, it is concluded that the values of the efficiency of the worm gear pair 42CrMo4/ZA12 are significantly higher compared to the worm gear pair 42CrMo4/A356, which is the result of lower power losses and lower values of the coefficient of friction.",
publisher = "University of East Sarajevo, Faculty of Mechanical Engineering",
journal = "Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022",
title = "Influence of materials on the efficiency of worm gear transmission",
pages = "409-402",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4352"
}

Stojanović, B., Vencl, A., Skulić, A., Miladinović, S.,& Gajević, S.. (2022). Influence of materials on the efficiency of worm gear transmission. in Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022
University of East Sarajevo, Faculty of Mechanical Engineering., 402-409.
https://hdl.handle.net/21.15107/rcub_machinery_4352

Stojanović B, Vencl A, Skulić A, Miladinović S, Gajević S. Influence of materials on the efficiency of worm gear transmission. in Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022. 2022;:402-409.
https://hdl.handle.net/21.15107/rcub_machinery_4352 .

Stojanović, Blaža, Vencl, Aleksandar, Skulić, Aleksandar, Miladinović, Slavica, Gajević, Sandra, "Influence of materials on the efficiency of worm gear transmission" in Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022 (2022):402-409,
https://hdl.handle.net/21.15107/rcub_machinery_4352 .

TY  - CONF
AU  - Vencl, Aleksandar
AU  - Stojanović, Blaža
AU  - Miladinović, Slavica
AU  - Klobčar, Damjan
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4351
AB  - The zinc-aluminium casting alloy ZA-27 is well-established and is a frequently used material for plain bearing sleeves. It has good physical, mechanical and tribological properties. Its tribological properties can be improved further by adding hard ceramic particles to the alloy. The tested nanocomposites were produced by the compocasting process with mechanical alloying preprocessing (ball milling). Three different amounts of SiC nanoparticles, with the same average size of 50 nm, were used as reinforcement, i.e. 0.2, 0.3 and 0.5 wt. %. Tests were performed on a block-on-disc tribometer (line contact) under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. The prediction of wear rate was performed with the use of an artificial neural network (ANN). After training the ANN with architecture 3-4-1, the regression coefficient for the network was 0.99973. The experimental values and values obtained by applying the Taguchi method were compared with the predicted values, showing that ANN is more efficient in predicting wear.
PB  - University of East Sarajevo, Faculty of Mechanical Engineering
C3  - Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022
T1  - Prediction of the wear characteristics of ZA-27/SiC nanocomposites using the artificial neural network
EP  - 114
SP  - 107
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4351
ER  - 

@conference{
author = "Vencl, Aleksandar and Stojanović, Blaža and Miladinović, Slavica and Klobčar, Damjan",
year = "2022",
abstract = "The zinc-aluminium casting alloy ZA-27 is well-established and is a frequently used material for plain bearing sleeves. It has good physical, mechanical and tribological properties. Its tribological properties can be improved further by adding hard ceramic particles to the alloy. The tested nanocomposites were produced by the compocasting process with mechanical alloying preprocessing (ball milling). Three different amounts of SiC nanoparticles, with the same average size of 50 nm, were used as reinforcement, i.e. 0.2, 0.3 and 0.5 wt. %. Tests were performed on a block-on-disc tribometer (line contact) under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. The prediction of wear rate was performed with the use of an artificial neural network (ANN). After training the ANN with architecture 3-4-1, the regression coefficient for the network was 0.99973. The experimental values and values obtained by applying the Taguchi method were compared with the predicted values, showing that ANN is more efficient in predicting wear.",
publisher = "University of East Sarajevo, Faculty of Mechanical Engineering",
journal = "Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022",
title = "Prediction of the wear characteristics of ZA-27/SiC nanocomposites using the artificial neural network",
pages = "114-107",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4351"
}

Vencl, A., Stojanović, B., Miladinović, S.,& Klobčar, D.. (2022). Prediction of the wear characteristics of ZA-27/SiC nanocomposites using the artificial neural network. in Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022
University of East Sarajevo, Faculty of Mechanical Engineering., 107-114.
https://hdl.handle.net/21.15107/rcub_machinery_4351

Vencl A, Stojanović B, Miladinović S, Klobčar D. Prediction of the wear characteristics of ZA-27/SiC nanocomposites using the artificial neural network. in Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022. 2022;:107-114.
https://hdl.handle.net/21.15107/rcub_machinery_4351 .

Vencl, Aleksandar, Stojanović, Blaža, Miladinović, Slavica, Klobčar, Damjan, "Prediction of the wear characteristics of ZA-27/SiC nanocomposites using the artificial neural network" in Proceedings of the 6th International Scientific Conference "COMETa 2022", East Sarajevo, B&H, RS 17th – 19th November, 2022 (2022):107-114,
https://hdl.handle.net/21.15107/rcub_machinery_4351 .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Stojanović, Blaža
AU  - Gojković, Ranka
AU  - Klančnik, Simon
AU  - Czifra, Árpád
AU  - Jakimovska, Kristina
AU  - Harničárová, Marta
PY  - 2022
UR  - https://www.tribomat.net/archive/2022/2022-03/TM-2022-03-02.pdf
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4286
AB  - The objective of this work was to investigate the influence of the addition of a small amount of SiC nanoparticles on the mechanical characteristics and wear resistance of ZA-27 alloy. The ZA-27 alloy-based nanocomposites were produced by a relatively cheap compocasting process preceded by mechanical alloying. Reinforcing elements were the silicon carbide (SiC) nanoparticles with an average size lower than 50 nm and in very small amounts of 0.2, 0.3 and 0.5 wt. %. Wear tests were realized on a block-on-disc tribometer under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Optimisation of the SiC amount was performed by applying the Taguchi method, showing that the SiC amount of 0.5 wt. % is optimal for the given testing conditions. Prediction of the results and wear maps were also conducted. The analysis of variance showed that the SiC amount has the greatest influence on wear rate (70.8 %), followed by the normal load (19.8 %), and the sliding speed (3.9 %), while the influences of all interactions between these factors did not have any significant influence.
PB  - Balkan Scientific Centre
T2  - Tribology and Materials
T1  - Enhancing of ZA-27 alloy wear characteristics by addition of small amount of SiC nanoparticles and its optimisation applying Taguchi method
EP  - 105
IS  - 3
SP  - 96
VL  - 1
DO  - 10.46793/tribomat.2022.014
ER  - 

@article{
author = "Vencl, Aleksandar and Stojanović, Blaža and Gojković, Ranka and Klančnik, Simon and Czifra, Árpád and Jakimovska, Kristina and Harničárová, Marta",
year = "2022",
abstract = "The objective of this work was to investigate the influence of the addition of a small amount of SiC nanoparticles on the mechanical characteristics and wear resistance of ZA-27 alloy. The ZA-27 alloy-based nanocomposites were produced by a relatively cheap compocasting process preceded by mechanical alloying. Reinforcing elements were the silicon carbide (SiC) nanoparticles with an average size lower than 50 nm and in very small amounts of 0.2, 0.3 and 0.5 wt. %. Wear tests were realized on a block-on-disc tribometer under lubricated sliding conditions, at two sliding speeds (0.25 and 1 m/s), two normal loads (40 and 100 N) and a sliding distance of 1000 m. Optimisation of the SiC amount was performed by applying the Taguchi method, showing that the SiC amount of 0.5 wt. % is optimal for the given testing conditions. Prediction of the results and wear maps were also conducted. The analysis of variance showed that the SiC amount has the greatest influence on wear rate (70.8 %), followed by the normal load (19.8 %), and the sliding speed (3.9 %), while the influences of all interactions between these factors did not have any significant influence.",
publisher = "Balkan Scientific Centre",
journal = "Tribology and Materials",
title = "Enhancing of ZA-27 alloy wear characteristics by addition of small amount of SiC nanoparticles and its optimisation applying Taguchi method",
pages = "105-96",
number = "3",
volume = "1",
doi = "10.46793/tribomat.2022.014"
}

Vencl, A., Stojanović, B., Gojković, R., Klančnik, S., Czifra, Á., Jakimovska, K.,& Harničárová, M.. (2022). Enhancing of ZA-27 alloy wear characteristics by addition of small amount of SiC nanoparticles and its optimisation applying Taguchi method. in Tribology and Materials
Balkan Scientific Centre., 1(3), 96-105.
https://doi.org/10.46793/tribomat.2022.014

Vencl A, Stojanović B, Gojković R, Klančnik S, Czifra Á, Jakimovska K, Harničárová M. Enhancing of ZA-27 alloy wear characteristics by addition of small amount of SiC nanoparticles and its optimisation applying Taguchi method. in Tribology and Materials. 2022;1(3):96-105.
doi:10.46793/tribomat.2022.014 .

Vencl, Aleksandar, Stojanović, Blaža, Gojković, Ranka, Klančnik, Simon, Czifra, Árpád, Jakimovska, Kristina, Harničárová, Marta, "Enhancing of ZA-27 alloy wear characteristics by addition of small amount of SiC nanoparticles and its optimisation applying Taguchi method" in Tribology and Materials, 1, no. 3 (2022):96-105,
https://doi.org/10.46793/tribomat.2022.014 . .

TY  - JOUR
AU  - Stojanović, Blaža
AU  - Gajević, Sandra
AU  - Kostić, Nenad
AU  - Miladinović, Slavica
AU  - Vencl, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3790
AB  - Purpose This study aims to present a novel methodology for the evaluation of tribological properties of new nanocomposites with the A356 alloy matrix reinforced with aluminium oxide (Al2O3) nanoparticles. Design/methodology/approach Metal matrix nanocomposites (MMnCs) with varying amounts and sizes of Al2O3 particles were produced using a compocasting process. The influence of four factors, with different levels, on the wear rate, was analysed with the help of the design of experiments (DoE). A regression model was developed by using the response surface methodology (RSM) to establish a relationship between the observed factors and the wear rate. An artificial neural network was also applied to predict the value of wear rate. Adequacy of models was compared with experimental values. The extreme values of wear rate were determined with a genetic algorithm and particle swarm optimization using the RSM model. Findings The combination of optimization methods determined the values of the factors which provide the highest wear resistance, namely, reinforcement content of 0.44 wt.% Al2O3, sliding speed of 1 m/s, normal load of 100 N and particle size of 100 nm. Used methods proved as effective tools for modelling and predicting of the behaviour of aluminium matrix nanocomposites. Originality/value The specific combinations of the optimization methods has not been applied up to now in the investigation of MMnCs. In addition, using of small content of ceramic nanoparticles as reinforcement has been poorly investigated. It can be stated that the presented approach for testing and prediction of the wear rate of nanocomposites is a very good base for their future research.
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Industrial Lubrication and Tribology
T1  - Optimization of parameters that affect wear of A356/Al2O3 nanocomposites using RSM, ANN, GA and PSO methods
EP  - 359
IS  - 3
SP  - 350
VL  - 74
DO  - 10.1108/ILT-07-2021-0262
ER  - 

@article{
author = "Stojanović, Blaža and Gajević, Sandra and Kostić, Nenad and Miladinović, Slavica and Vencl, Aleksandar",
year = "2022",
abstract = "Purpose This study aims to present a novel methodology for the evaluation of tribological properties of new nanocomposites with the A356 alloy matrix reinforced with aluminium oxide (Al2O3) nanoparticles. Design/methodology/approach Metal matrix nanocomposites (MMnCs) with varying amounts and sizes of Al2O3 particles were produced using a compocasting process. The influence of four factors, with different levels, on the wear rate, was analysed with the help of the design of experiments (DoE). A regression model was developed by using the response surface methodology (RSM) to establish a relationship between the observed factors and the wear rate. An artificial neural network was also applied to predict the value of wear rate. Adequacy of models was compared with experimental values. The extreme values of wear rate were determined with a genetic algorithm and particle swarm optimization using the RSM model. Findings The combination of optimization methods determined the values of the factors which provide the highest wear resistance, namely, reinforcement content of 0.44 wt.% Al2O3, sliding speed of 1 m/s, normal load of 100 N and particle size of 100 nm. Used methods proved as effective tools for modelling and predicting of the behaviour of aluminium matrix nanocomposites. Originality/value The specific combinations of the optimization methods has not been applied up to now in the investigation of MMnCs. In addition, using of small content of ceramic nanoparticles as reinforcement has been poorly investigated. It can be stated that the presented approach for testing and prediction of the wear rate of nanocomposites is a very good base for their future research.",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Industrial Lubrication and Tribology",
title = "Optimization of parameters that affect wear of A356/Al2O3 nanocomposites using RSM, ANN, GA and PSO methods",
pages = "359-350",
number = "3",
volume = "74",
doi = "10.1108/ILT-07-2021-0262"
}

Stojanović, B., Gajević, S., Kostić, N., Miladinović, S.,& Vencl, A.. (2022). Optimization of parameters that affect wear of A356/Al2O3 nanocomposites using RSM, ANN, GA and PSO methods. in Industrial Lubrication and Tribology
Emerald Group Publishing Ltd, Bingley., 74(3), 350-359.
https://doi.org/10.1108/ILT-07-2021-0262

Stojanović B, Gajević S, Kostić N, Miladinović S, Vencl A. Optimization of parameters that affect wear of A356/Al2O3 nanocomposites using RSM, ANN, GA and PSO methods. in Industrial Lubrication and Tribology. 2022;74(3):350-359.
doi:10.1108/ILT-07-2021-0262 .

Stojanović, Blaža, Gajević, Sandra, Kostić, Nenad, Miladinović, Slavica, Vencl, Aleksandar, "Optimization of parameters that affect wear of A356/Al2O3 nanocomposites using RSM, ANN, GA and PSO methods" in Industrial Lubrication and Tribology, 74, no. 3 (2022):350-359,
https://doi.org/10.1108/ILT-07-2021-0262 . .

TY  - JOUR
AU  - Kandeva, Mara
AU  - Zagorski, Mihail
AU  - Nikolić, Ruzica
AU  - Stojanović, Blaža
AU  - But, Adrian
AU  - Botko, Frantisek
AU  - Pitel, Jan
AU  - Vencl, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3759
AB  - The nickel (Ni) coatings without and with embedded (5-7 vol. %) cubic boron nitride (c-BN) nanoparticles (10 nm in diameter) were deposited on carbon steel substrate by an electroless plating process. Coatings were tested in as-deposited and heat-treated (heating at 300 degrees C for 6 h) conditions. Coating structure characterisation was performed, as well as hardness and roughness measurements. Friction properties were tested in dry and in water (seawater) lubricated contact conditions, with bronze as a counter-body material. Both static and kinetic coefficients of friction were measured for two different surface texture preparations (initial and working). The first surface texture simulated the running-in condition, and the second surface texture represented the steady-state conditions. The enhancement of the abrasive and erosive wear resistance of heat-treated electroless Ni coatings with embedded c-BN nanoparticles was already proved in our previous studies. This study aims to investigate those influences on friction properties of electroless Ni coatings in different sliding conditions. The results show that the coefficients of friction did not differ too much between the coatings and that the surface roughness and presence of seawater had a much stronger influence.
PB  - MDPI, Basel
T2  - Coatings
T1  - Friction properties of the heat-treated electroless Ni coatings embedded with c-BN nanoparticles
IS  - 7
VL  - 12
DO  - 10.3390/coatings12071008
ER  - 

@article{
author = "Kandeva, Mara and Zagorski, Mihail and Nikolić, Ruzica and Stojanović, Blaža and But, Adrian and Botko, Frantisek and Pitel, Jan and Vencl, Aleksandar",
year = "2022",
abstract = "The nickel (Ni) coatings without and with embedded (5-7 vol. %) cubic boron nitride (c-BN) nanoparticles (10 nm in diameter) were deposited on carbon steel substrate by an electroless plating process. Coatings were tested in as-deposited and heat-treated (heating at 300 degrees C for 6 h) conditions. Coating structure characterisation was performed, as well as hardness and roughness measurements. Friction properties were tested in dry and in water (seawater) lubricated contact conditions, with bronze as a counter-body material. Both static and kinetic coefficients of friction were measured for two different surface texture preparations (initial and working). The first surface texture simulated the running-in condition, and the second surface texture represented the steady-state conditions. The enhancement of the abrasive and erosive wear resistance of heat-treated electroless Ni coatings with embedded c-BN nanoparticles was already proved in our previous studies. This study aims to investigate those influences on friction properties of electroless Ni coatings in different sliding conditions. The results show that the coefficients of friction did not differ too much between the coatings and that the surface roughness and presence of seawater had a much stronger influence.",
publisher = "MDPI, Basel",
journal = "Coatings",
title = "Friction properties of the heat-treated electroless Ni coatings embedded with c-BN nanoparticles",
number = "7",
volume = "12",
doi = "10.3390/coatings12071008"
}

Kandeva, M., Zagorski, M., Nikolić, R., Stojanović, B., But, A., Botko, F., Pitel, J.,& Vencl, A.. (2022). Friction properties of the heat-treated electroless Ni coatings embedded with c-BN nanoparticles. in Coatings
MDPI, Basel., 12(7).
https://doi.org/10.3390/coatings12071008

Kandeva M, Zagorski M, Nikolić R, Stojanović B, But A, Botko F, Pitel J, Vencl A. Friction properties of the heat-treated electroless Ni coatings embedded with c-BN nanoparticles. in Coatings. 2022;12(7).
doi:10.3390/coatings12071008 .

Kandeva, Mara, Zagorski, Mihail, Nikolić, Ruzica, Stojanović, Blaža, But, Adrian, Botko, Frantisek, Pitel, Jan, Vencl, Aleksandar, "Friction properties of the heat-treated electroless Ni coatings embedded with c-BN nanoparticles" in Coatings, 12, no. 7 (2022),
https://doi.org/10.3390/coatings12071008 . .

TY  - JOUR
AU  - Assenova, Emilia
AU  - Vencl, Aleksandar
PY  - 2022
UR  - https://www.tribomat.net/archive/2022/2022-01/TM-2022-01-05.pdf
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4285
AB  - The review summarises basic tribological concepts for the stability, sustainability and life of the contact systems, highlighting the idea that tribological processes are most easily manipulated through the contact and the third body. If the original contact pair does not possess a specially inserted intermediate layer between the two interacting bodies, a secondary protective film forms, self-organized in the course of the friction processes themselves to keep the sustainability of the system. The ambition of tribology is to control friction and wear of the contact: either to find the optimal material to be placed in contact, or to predict events and phenomena stimulating the emergence of its own protective layer. A short overview is done of the ways for obtaining very low friction and wear by applying the principles of self-organization and green tribology, such as the selective transfer of material between the contact surfaces and the superlubricity phenomena.
PB  - Balkan Scientific Centre
T2  - Tribology and Materials
T1  - Tribology and self-organization in reducing friction: A brief review
EP  - 41
IS  - 1
SP  - 35
VL  - 1
DO  - 10.46793/tribomat.2022.005
ER  - 

@article{
author = "Assenova, Emilia and Vencl, Aleksandar",
year = "2022",
abstract = "The review summarises basic tribological concepts for the stability, sustainability and life of the contact systems, highlighting the idea that tribological processes are most easily manipulated through the contact and the third body. If the original contact pair does not possess a specially inserted intermediate layer between the two interacting bodies, a secondary protective film forms, self-organized in the course of the friction processes themselves to keep the sustainability of the system. The ambition of tribology is to control friction and wear of the contact: either to find the optimal material to be placed in contact, or to predict events and phenomena stimulating the emergence of its own protective layer. A short overview is done of the ways for obtaining very low friction and wear by applying the principles of self-organization and green tribology, such as the selective transfer of material between the contact surfaces and the superlubricity phenomena.",
publisher = "Balkan Scientific Centre",
journal = "Tribology and Materials",
title = "Tribology and self-organization in reducing friction: A brief review",
pages = "41-35",
number = "1",
volume = "1",
doi = "10.46793/tribomat.2022.005"
}

Assenova, E.,& Vencl, A.. (2022). Tribology and self-organization in reducing friction: A brief review. in Tribology and Materials
Balkan Scientific Centre., 1(1), 35-41.
https://doi.org/10.46793/tribomat.2022.005

Assenova E, Vencl A. Tribology and self-organization in reducing friction: A brief review. in Tribology and Materials. 2022;1(1):35-41.
doi:10.46793/tribomat.2022.005 .

Assenova, Emilia, Vencl, Aleksandar, "Tribology and self-organization in reducing friction: A brief review" in Tribology and Materials, 1, no. 1 (2022):35-41,
https://doi.org/10.46793/tribomat.2022.005 . .

TY  - JOUR
AU  - Klobčar, Damjan
AU  - Pušavec, Franci
AU  - Bračun, Drago
AU  - Garašić, Ivica
AU  - Kožuh, Zoran
AU  - Vencl, Aleksandar
AU  - Trdan, Uroš
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4289
AB  - Friction riveting represents a promising technology for joining similar and/or dissimilar materials of light-weight components. However, the main drawback of the technology is that it is primarily used only with special machines for friction welding that have a force control. In this study we used accessible CNC machines with a position control. A set of friction riveting experiments was performed to establish the relationship between the processing parameters, the rivet formation and its mechanical strength. During the manufacturing process, the axial force and torque were constantly measured. The fabricated joints were examined using an X-ray imaging technique, microstructural analyses, and mechanical tests. The samples were subjected to the pull-out test to analyse the joints’ strength and determine the failure mode type. In addition, a correlation between the friction riveting processing parameters, the rivet penetration depth, the rivet shape and the joint strength was established. The results depict that a higher axial force in the first production phase at the higher feeding rate increases the penetration depth, while in the second phase at lower feeding rate, an anchoring shape of a rivet forms.
PB  - MDPI
T2  - Materials
T1  - Influence of friction riveting parameters on the dissimilar joint formation and strength
IS  - 19
SP  - 6812
VL  - 15
DO  - https://doi.org/10.3390/ma15196812
ER  - 

@article{
author = "Klobčar, Damjan and Pušavec, Franci and Bračun, Drago and Garašić, Ivica and Kožuh, Zoran and Vencl, Aleksandar and Trdan, Uroš",
year = "2022",
abstract = "Friction riveting represents a promising technology for joining similar and/or dissimilar materials of light-weight components. However, the main drawback of the technology is that it is primarily used only with special machines for friction welding that have a force control. In this study we used accessible CNC machines with a position control. A set of friction riveting experiments was performed to establish the relationship between the processing parameters, the rivet formation and its mechanical strength. During the manufacturing process, the axial force and torque were constantly measured. The fabricated joints were examined using an X-ray imaging technique, microstructural analyses, and mechanical tests. The samples were subjected to the pull-out test to analyse the joints’ strength and determine the failure mode type. In addition, a correlation between the friction riveting processing parameters, the rivet penetration depth, the rivet shape and the joint strength was established. The results depict that a higher axial force in the first production phase at the higher feeding rate increases the penetration depth, while in the second phase at lower feeding rate, an anchoring shape of a rivet forms.",
publisher = "MDPI",
journal = "Materials",
title = "Influence of friction riveting parameters on the dissimilar joint formation and strength",
number = "19",
pages = "6812",
volume = "15",
doi = "https://doi.org/10.3390/ma15196812"
}

Klobčar, D., Pušavec, F., Bračun, D., Garašić, I., Kožuh, Z., Vencl, A.,& Trdan, U.. (2022). Influence of friction riveting parameters on the dissimilar joint formation and strength. in Materials
MDPI., 15(19), 6812.
https://doi.org/https://doi.org/10.3390/ma15196812

Klobčar D, Pušavec F, Bračun D, Garašić I, Kožuh Z, Vencl A, Trdan U. Influence of friction riveting parameters on the dissimilar joint formation and strength. in Materials. 2022;15(19):6812.
doi:https://doi.org/10.3390/ma15196812 .

Klobčar, Damjan, Pušavec, Franci, Bračun, Drago, Garašić, Ivica, Kožuh, Zoran, Vencl, Aleksandar, Trdan, Uroš, "Influence of friction riveting parameters on the dissimilar joint formation and strength" in Materials, 15, no. 19 (2022):6812,
https://doi.org/https://doi.org/10.3390/ma15196812 . .

TY  - JOUR
AU  - Vulović, Stefan
AU  - Todorović, Aleksandar
AU  - Stančić, Ivica
AU  - Popovac, Aleksandra
AU  - Stašić, Jovana N.
AU  - Vencl, Aleksandar
AU  - Milić-Lemić, Aleksandra
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4288
AB  - To determine if there are any differences in surface characteristics (surface roughness and contact angle) among different CAD/CAM materials indicated for fabricating implant-supported restorations, following all the material preparation protocols provided by the manufacturer. One-hundred forty-four specimens were divided into six groups: RBC (resin-based composite), PMMA (polymethyl methacrylate), PEEK (polyether ether ketone), ZP (zirconia polished), ZG (zirconia glazed) and CoCr4 (CoCr4 alloy). The experimental part included surface roughness (SR) and contact angle of water (WCA) analyses, fulfilled with atomic force microscopy (AFM) and scanning electron microscopy (SEM) view of surface topography. The data were analyzed using Kruskal-Wallis test with a Dunn's post hoc analysis, the correlation between measurements was tested using Spearman's rank correlation coefficient and all data were presented as mean ± SD. ZG specimens were significantly rougher compared to other groups (p ≤ 0.05). The WCA measurements revealed significantly lower mean values in ZG group (p ≤ 0.05), contrary to PEEK and CoCr4, where significantly higher mean values were observed, compared to other groups (p ≤ 0.05). There exist a moderate negative correlation between the SR and WCA (ρ =  0.41). AFM 3D and SEM 2D images presented more or less heterogeneous surface of all materials. There were statistically significant differences in surface roughness and contact angle among tested material groups. Moderate negative correlation was found between surface roughness and contact angle of tested material groups. The study gives us a better understanding of influence of physicochemical characteristics of investigated materials on their surface properties and provides useful knowledge for future researches in a view of material's behavior under in vivo conditions, when it comes to a question of features related to surface quality, such as microbial adhesion, corrosion, wear, biocompatibility and esthetics.
PB  - Wiley
T2  - Journal of Esthetic and Restorative Dentistry
T1  - Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations
EP  - 1141
IS  - 7
SP  - 1132
VL  - 34
DO  - 10.1111/jerd.12958
ER  - 

@article{
author = "Vulović, Stefan and Todorović, Aleksandar and Stančić, Ivica and Popovac, Aleksandra and Stašić, Jovana N. and Vencl, Aleksandar and Milić-Lemić, Aleksandra",
year = "2022",
abstract = "To determine if there are any differences in surface characteristics (surface roughness and contact angle) among different CAD/CAM materials indicated for fabricating implant-supported restorations, following all the material preparation protocols provided by the manufacturer. One-hundred forty-four specimens were divided into six groups: RBC (resin-based composite), PMMA (polymethyl methacrylate), PEEK (polyether ether ketone), ZP (zirconia polished), ZG (zirconia glazed) and CoCr4 (CoCr4 alloy). The experimental part included surface roughness (SR) and contact angle of water (WCA) analyses, fulfilled with atomic force microscopy (AFM) and scanning electron microscopy (SEM) view of surface topography. The data were analyzed using Kruskal-Wallis test with a Dunn's post hoc analysis, the correlation between measurements was tested using Spearman's rank correlation coefficient and all data were presented as mean ± SD. ZG specimens were significantly rougher compared to other groups (p ≤ 0.05). The WCA measurements revealed significantly lower mean values in ZG group (p ≤ 0.05), contrary to PEEK and CoCr4, where significantly higher mean values were observed, compared to other groups (p ≤ 0.05). There exist a moderate negative correlation between the SR and WCA (ρ =  0.41). AFM 3D and SEM 2D images presented more or less heterogeneous surface of all materials. There were statistically significant differences in surface roughness and contact angle among tested material groups. Moderate negative correlation was found between surface roughness and contact angle of tested material groups. The study gives us a better understanding of influence of physicochemical characteristics of investigated materials on their surface properties and provides useful knowledge for future researches in a view of material's behavior under in vivo conditions, when it comes to a question of features related to surface quality, such as microbial adhesion, corrosion, wear, biocompatibility and esthetics.",
publisher = "Wiley",
journal = "Journal of Esthetic and Restorative Dentistry",
title = "Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations",
pages = "1141-1132",
number = "7",
volume = "34",
doi = "10.1111/jerd.12958"
}

Vulović, S., Todorović, A., Stančić, I., Popovac, A., Stašić, J. N., Vencl, A.,& Milić-Lemić, A.. (2022). Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations. in Journal of Esthetic and Restorative Dentistry
Wiley., 34(7), 1132-1141.
https://doi.org/10.1111/jerd.12958

Vulović S, Todorović A, Stančić I, Popovac A, Stašić JN, Vencl A, Milić-Lemić A. Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations. in Journal of Esthetic and Restorative Dentistry. 2022;34(7):1132-1141.
doi:10.1111/jerd.12958 .

Vulović, Stefan, Todorović, Aleksandar, Stančić, Ivica, Popovac, Aleksandra, Stašić, Jovana N., Vencl, Aleksandar, Milić-Lemić, Aleksandra, "Study on the surface properties of different commercially available CAD/CAM materials for implant-supported restorations" in Journal of Esthetic and Restorative Dentistry, 34, no. 7 (2022):1132-1141,
https://doi.org/10.1111/jerd.12958 . .

TY  - JOUR
AU  - Dimić, Aleksandar
AU  - Vencl, Aleksandar
AU  - Ristivojević, Mileta
AU  - Mitrović, Radivoje
AU  - Mišković, Žarko
AU  - Milivojević, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3749
AB  - The influence of the running-in process operating parameters on tribological properties of the block-on-disc samples in lubricated sliding conditions is analyzed and discussed in detail. Different running-in regimes are achieved by varying the normal load and sliding speed. After the running-in period, during which the operating parameters are varied, all samples are placed in a working regime under the same set of operating conditions. At the end of the running-in period, as well as at the end of the working period, an analysis of the changes in the surface roughness, microhardness, wear rate, and coefficient of friction is performed. Less desirable properties in terms of wear rate and steady-state coefficient of friction are noticed for the samples that were run-in with the operating conditions which were the same as the working regime operating conditions. In the defined test conditions, it is shown that the intensity of normal load applied during the running-in process has a dominant influence on the amount of wear and coefficient of friction value. It was also shown that the running-in process can significantly improve the roughness of the initially rough contact surfaces. The results of experimental testing indicate that the variation of the operating parameters during the running-in process can be used to improve the working ability of the sliding contact surfaces under the mixed lubrication regime.
PB  - Sage Publications Ltd, London
T2  - Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology
T1  - Influence of the running-in process on the working ability of contact surfaces in lubricated sliding conditions
EP  - 700
IS  - 4
SP  - 691
VL  - 236
DO  - 10.1177/13506501211027711
ER  - 

@article{
author = "Dimić, Aleksandar and Vencl, Aleksandar and Ristivojević, Mileta and Mitrović, Radivoje and Mišković, Žarko and Milivojević, Aleksandar",
year = "2022",
abstract = "The influence of the running-in process operating parameters on tribological properties of the block-on-disc samples in lubricated sliding conditions is analyzed and discussed in detail. Different running-in regimes are achieved by varying the normal load and sliding speed. After the running-in period, during which the operating parameters are varied, all samples are placed in a working regime under the same set of operating conditions. At the end of the running-in period, as well as at the end of the working period, an analysis of the changes in the surface roughness, microhardness, wear rate, and coefficient of friction is performed. Less desirable properties in terms of wear rate and steady-state coefficient of friction are noticed for the samples that were run-in with the operating conditions which were the same as the working regime operating conditions. In the defined test conditions, it is shown that the intensity of normal load applied during the running-in process has a dominant influence on the amount of wear and coefficient of friction value. It was also shown that the running-in process can significantly improve the roughness of the initially rough contact surfaces. The results of experimental testing indicate that the variation of the operating parameters during the running-in process can be used to improve the working ability of the sliding contact surfaces under the mixed lubrication regime.",
publisher = "Sage Publications Ltd, London",
journal = "Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology",
title = "Influence of the running-in process on the working ability of contact surfaces in lubricated sliding conditions",
pages = "700-691",
number = "4",
volume = "236",
doi = "10.1177/13506501211027711"
}

Dimić, A., Vencl, A., Ristivojević, M., Mitrović, R., Mišković, Ž.,& Milivojević, A.. (2022). Influence of the running-in process on the working ability of contact surfaces in lubricated sliding conditions. in Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology
Sage Publications Ltd, London., 236(4), 691-700.
https://doi.org/10.1177/13506501211027711

Dimić A, Vencl A, Ristivojević M, Mitrović R, Mišković Ž, Milivojević A. Influence of the running-in process on the working ability of contact surfaces in lubricated sliding conditions. in Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology. 2022;236(4):691-700.
doi:10.1177/13506501211027711 .

Dimić, Aleksandar, Vencl, Aleksandar, Ristivojević, Mileta, Mitrović, Radivoje, Mišković, Žarko, Milivojević, Aleksandar, "Influence of the running-in process on the working ability of contact surfaces in lubricated sliding conditions" in Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology, 236, no. 4 (2022):691-700,
https://doi.org/10.1177/13506501211027711 . .

TY  - JOUR
AU  - Kandeva, Mara
AU  - Kalitchin, Zhecho
AU  - Zadorozhnaya, Elena
AU  - Vencl, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3792
AB  - Purpose The purpose of this study was to investigate the biobased (rapeseed) oil with the addition of different amounts of metal-containing additive in a steel-bronze tribological system. The additional purpose was to find the optimal value of the additive. Design/methodology/approach This paper exposes experimental results of the performance characteristics (coefficient of friction (COF), working temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 wt.%. All results were compared with the results obtained for the base rapeseed oil. Two different tribometers were used, with the same tribosystem elements materials (bronze and steel). COF experiments were performed under four different normal loads and fixed sliding speed and time. Temperature and wear were continuously monitored. Findings Results showed that the metal-containing additive in rapeseed oil reduced all monitored characteristics. It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it. Originality/value Owing to growing environmental concerns, vegetable oil-based lubricants and other biodegradable lubricants are expanding their area of application. Currently, one of the most widely used vegetable oil is rapeseed oil. The metal-containing additive used in this study is previously investigated as an addition to mineral- and synthetic-based oils. There are very few studies that investigate its influence on the vegetable oil-based lubricants. In addition, there is no comparative investigation of its influence on several performance characteristics (COF, temperature and wear).
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Industrial Lubrication and Tribology
T1  - Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive
EP  - 315
IS  - 3
SP  - 309
VL  - 74
DO  - 10.1108/ILT-07-2021-0259
ER  - 

@article{
author = "Kandeva, Mara and Kalitchin, Zhecho and Zadorozhnaya, Elena and Vencl, Aleksandar",
year = "2022",
abstract = "Purpose The purpose of this study was to investigate the biobased (rapeseed) oil with the addition of different amounts of metal-containing additive in a steel-bronze tribological system. The additional purpose was to find the optimal value of the additive. Design/methodology/approach This paper exposes experimental results of the performance characteristics (coefficient of friction (COF), working temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 wt.%. All results were compared with the results obtained for the base rapeseed oil. Two different tribometers were used, with the same tribosystem elements materials (bronze and steel). COF experiments were performed under four different normal loads and fixed sliding speed and time. Temperature and wear were continuously monitored. Findings Results showed that the metal-containing additive in rapeseed oil reduced all monitored characteristics. It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it. Originality/value Owing to growing environmental concerns, vegetable oil-based lubricants and other biodegradable lubricants are expanding their area of application. Currently, one of the most widely used vegetable oil is rapeseed oil. The metal-containing additive used in this study is previously investigated as an addition to mineral- and synthetic-based oils. There are very few studies that investigate its influence on the vegetable oil-based lubricants. In addition, there is no comparative investigation of its influence on several performance characteristics (COF, temperature and wear).",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Industrial Lubrication and Tribology",
title = "Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive",
pages = "315-309",
number = "3",
volume = "74",
doi = "10.1108/ILT-07-2021-0259"
}

Kandeva, M., Kalitchin, Z., Zadorozhnaya, E.,& Vencl, A.. (2022). Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive. in Industrial Lubrication and Tribology
Emerald Group Publishing Ltd, Bingley., 74(3), 309-315.
https://doi.org/10.1108/ILT-07-2021-0259

Kandeva M, Kalitchin Z, Zadorozhnaya E, Vencl A. Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive. in Industrial Lubrication and Tribology. 2022;74(3):309-315.
doi:10.1108/ILT-07-2021-0259 .

Kandeva, Mara, Kalitchin, Zhecho, Zadorozhnaya, Elena, Vencl, Aleksandar, "Performance characteristics of lubricant based on rapeseed oil containing different amounts of metal-containing additive" in Industrial Lubrication and Tribology, 74, no. 3 (2022):309-315,
https://doi.org/10.1108/ILT-07-2021-0259 . .

TY  - JOUR
AU  - Vencl, Aleksandar
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3714
PB  - Emerald Group Publishing Ltd, Bingley
T2  - Industrial Lubrication and Tribology
T1  - Guest editorial: BALKANTRIB '20
EP  - 293
IS  - 3
SP  - 293
VL  - 74
DO  - 10.1108/ILT-04-2022-545
ER  - 

@article{
author = "Vencl, Aleksandar",
year = "2022",
publisher = "Emerald Group Publishing Ltd, Bingley",
journal = "Industrial Lubrication and Tribology",
title = "Guest editorial: BALKANTRIB '20",
pages = "293-293",
number = "3",
volume = "74",
doi = "10.1108/ILT-04-2022-545"
}

Vencl, A.. (2022). Guest editorial: BALKANTRIB '20. in Industrial Lubrication and Tribology
Emerald Group Publishing Ltd, Bingley., 74(3), 293-293.
https://doi.org/10.1108/ILT-04-2022-545

Vencl A. Guest editorial: BALKANTRIB '20. in Industrial Lubrication and Tribology. 2022;74(3):293-293.
doi:10.1108/ILT-04-2022-545 .

Vencl, Aleksandar, "Guest editorial: BALKANTRIB '20" in Industrial Lubrication and Tribology, 74, no. 3 (2022):293-293,
https://doi.org/10.1108/ILT-04-2022-545 . .

TY  - JOUR
AU  - Vasiljević, Sasa
AU  - Glisović, Jasna
AU  - Stojanović, Blaža
AU  - Vencl, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/98
AB  - Wear of a friction pair of brake (brake disc and pads), in addition to reducing the active safety of vehicles, leads to the formation of particles that can affect the environment and human health. In addition to the technologies that are being developed for the collection of particles created by the wear of brakes during braking process, today new materials are being introduced, as well as various technologies for processing friction pairs with the aim of reducing brake wear and thus the formation of particles. Furthermore, today, technologies for coating (cladding) the friction surfaces of disc brakes with some materials are increasingly applied and researched, in order to reduce the wear intensity (wear rate) of disc brakes, i.e. the emission of particles created by wear of friction pairs. The aim of this paper is to analyse and review different deposition techniques and materials used for brake discs coatings, as well as the effect it has on the wear rate of friction pair. There are many coating deposition techniques, and special attention is paid to the technology of laser hardfacing of brake rotors.
PB  - Sage Publications Ltd, London
T2  - Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology
T1  - Review of the coatings used for brake discs regarding their wear resistance and environmental effect
DO  - 10.1177/13506501211070654
ER  - 

@article{
author = "Vasiljević, Sasa and Glisović, Jasna and Stojanović, Blaža and Vencl, Aleksandar",
year = "2021",
abstract = "Wear of a friction pair of brake (brake disc and pads), in addition to reducing the active safety of vehicles, leads to the formation of particles that can affect the environment and human health. In addition to the technologies that are being developed for the collection of particles created by the wear of brakes during braking process, today new materials are being introduced, as well as various technologies for processing friction pairs with the aim of reducing brake wear and thus the formation of particles. Furthermore, today, technologies for coating (cladding) the friction surfaces of disc brakes with some materials are increasingly applied and researched, in order to reduce the wear intensity (wear rate) of disc brakes, i.e. the emission of particles created by wear of friction pairs. The aim of this paper is to analyse and review different deposition techniques and materials used for brake discs coatings, as well as the effect it has on the wear rate of friction pair. There are many coating deposition techniques, and special attention is paid to the technology of laser hardfacing of brake rotors.",
publisher = "Sage Publications Ltd, London",
journal = "Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology",
title = "Review of the coatings used for brake discs regarding their wear resistance and environmental effect",
doi = "10.1177/13506501211070654"
}

Vasiljević, S., Glisović, J., Stojanović, B.,& Vencl, A.. (2021). Review of the coatings used for brake discs regarding their wear resistance and environmental effect. in Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology
Sage Publications Ltd, London..
https://doi.org/10.1177/13506501211070654

Vasiljević S, Glisović J, Stojanović B, Vencl A. Review of the coatings used for brake discs regarding their wear resistance and environmental effect. in Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology. 2021;.
doi:10.1177/13506501211070654 .

Vasiljević, Sasa, Glisović, Jasna, Stojanović, Blaža, Vencl, Aleksandar, "Review of the coatings used for brake discs regarding their wear resistance and environmental effect" in Proceedings of The Institution of Mechanical Engineers Part J-Journal of Engineering Tribology (2021),
https://doi.org/10.1177/13506501211070654 . .

TY  - JOUR
AU  - Laera, Anna Maria
AU  - Massaro, Marcello
AU  - Dimaio, Domenico
AU  - Vencl, Aleksandar
AU  - Rizzo, Antonella
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3552
AB  - In the past few decades, ZrN thin films have been identified as wear resistant coatings for tribological applications. The mechanical and tribological properties of ZrN thin layers depend on internal stress induced by the adopted deposition techniques and deposition parameters such as pressure, temperature, and growth rate. In sputtering deposition processes, the selected target voltage waveform and the plasma characteristics also play a crucial influence on physical properties of produced coatings. In present work, ZrN thin films, obtained setting different values of duty cycle in a reactive bipolar pulsed dual magnetron sputtering plant, were investigated to evaluate their residual stress through the substrate curvature method. A considerable progressive increase of residual stress values was measured at decreasing duty cycle, attesting the significant role of voltage waveform in stress development. An evident correlation was also highlighted between the values of the duty cycle and those of wear factor. The performed analysis attested an advantageous effect of internal stress, having the samples with high compressive stress, higher wear resistance. A downward trend for wear rate with the increase of internal residual stress was observed. The choice of suitable values of duty cycle allowed to produce ceramic coatings with improved tribological performance.
PB  - MDPI, Basel
T2  - Materials
T1  - Residual stress and tribological performance of ZrN coatings produced by
reactive bipolar pulsed magnetron sputtering
IS  - 21
VL  - 14
DO  - 10.3390/ma14216462
ER  - 

@article{
author = "Laera, Anna Maria and Massaro, Marcello and Dimaio, Domenico and Vencl, Aleksandar and Rizzo, Antonella",
year = "2021",
abstract = "In the past few decades, ZrN thin films have been identified as wear resistant coatings for tribological applications. The mechanical and tribological properties of ZrN thin layers depend on internal stress induced by the adopted deposition techniques and deposition parameters such as pressure, temperature, and growth rate. In sputtering deposition processes, the selected target voltage waveform and the plasma characteristics also play a crucial influence on physical properties of produced coatings. In present work, ZrN thin films, obtained setting different values of duty cycle in a reactive bipolar pulsed dual magnetron sputtering plant, were investigated to evaluate their residual stress through the substrate curvature method. A considerable progressive increase of residual stress values was measured at decreasing duty cycle, attesting the significant role of voltage waveform in stress development. An evident correlation was also highlighted between the values of the duty cycle and those of wear factor. The performed analysis attested an advantageous effect of internal stress, having the samples with high compressive stress, higher wear resistance. A downward trend for wear rate with the increase of internal residual stress was observed. The choice of suitable values of duty cycle allowed to produce ceramic coatings with improved tribological performance.",
publisher = "MDPI, Basel",
journal = "Materials",
title = "Residual stress and tribological performance of ZrN coatings produced by
reactive bipolar pulsed magnetron sputtering",
number = "21",
volume = "14",
doi = "10.3390/ma14216462"
}

Laera, A. M., Massaro, M., Dimaio, D., Vencl, A.,& Rizzo, A.. (2021). Residual stress and tribological performance of ZrN coatings produced by
reactive bipolar pulsed magnetron sputtering. in Materials
MDPI, Basel., 14(21).
https://doi.org/10.3390/ma14216462

Laera AM, Massaro M, Dimaio D, Vencl A, Rizzo A. Residual stress and tribological performance of ZrN coatings produced by
reactive bipolar pulsed magnetron sputtering. in Materials. 2021;14(21).
doi:10.3390/ma14216462 .

Laera, Anna Maria, Massaro, Marcello, Dimaio, Domenico, Vencl, Aleksandar, Rizzo, Antonella, "Residual stress and tribological performance of ZrN coatings produced by
reactive bipolar pulsed magnetron sputtering" in Materials, 14, no. 21 (2021),
https://doi.org/10.3390/ma14216462 . .

TY  - CONF
AU  - Stojanović, Blaža
AU  - Vencl, Aleksandar
AU  - Miloradović, Nenad
AU  - Gajević, Sandra
AU  - Miladinović, Slavica
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4349
AB  - Optimization of tribological behaviour of hybrid composites based on A356 and ZA27 alloys reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % Gr is presented in this paper. Optimization was performed using the Taguchi method and the artificial neural network (ANN). Hybrid composites were obtained by compocasting procedure. The analysis shows that hybrid composites based on A356 alloy have better tribological characteristics, while the one reinforced with 10 wt. % SiC and 1 wt. % Gr shows the least wear.
C3  - Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021
T1  - Optimization of tribological behaviour of hybrid composites based on A356 and ZA-27 alloys
EP  - 22
SP  - 21
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4349
ER  - 

@conference{
author = "Stojanović, Blaža and Vencl, Aleksandar and Miloradović, Nenad and Gajević, Sandra and Miladinović, Slavica",
year = "2021",
abstract = "Optimization of tribological behaviour of hybrid composites based on A356 and ZA27 alloys reinforced with 10 wt. % SiC and 0, 1 and 3 wt. % Gr is presented in this paper. Optimization was performed using the Taguchi method and the artificial neural network (ANN). Hybrid composites were obtained by compocasting procedure. The analysis shows that hybrid composites based on A356 alloy have better tribological characteristics, while the one reinforced with 10 wt. % SiC and 1 wt. % Gr shows the least wear.",
journal = "Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021",
title = "Optimization of tribological behaviour of hybrid composites based on A356 and ZA-27 alloys",
pages = "22-21",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4349"
}

Stojanović, B., Vencl, A., Miloradović, N., Gajević, S.,& Miladinović, S.. (2021). Optimization of tribological behaviour of hybrid composites based on A356 and ZA-27 alloys. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021, 21-22.
https://hdl.handle.net/21.15107/rcub_machinery_4349

Stojanović B, Vencl A, Miloradović N, Gajević S, Miladinović S. Optimization of tribological behaviour of hybrid composites based on A356 and ZA-27 alloys. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021. 2021;:21-22.
https://hdl.handle.net/21.15107/rcub_machinery_4349 .

Stojanović, Blaža, Vencl, Aleksandar, Miloradović, Nenad, Gajević, Sandra, Miladinović, Slavica, "Optimization of tribological behaviour of hybrid composites based on A356 and ZA-27 alloys" in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021 (2021):21-22,
https://hdl.handle.net/21.15107/rcub_machinery_4349 .

TY  - CONF
AU  - Gajević, Sandra
AU  - Miladinović, Slavica
AU  - Stojanović, Blaža
AU  - Vencl, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4348
AB  - The aim of this study was optimization of wear of nanocomposites with A356 alloy as a matrix. Different percentages of Al2O3 particles (0.2, 0.3 and 0.5 wt. %), with two average size (25 and 100 nm), were dispersed in the A356 matrix and fabricated by compocasting process. The tribological tests were conducted by the orthogonal L24 matrix. By application of the RSM method, a mathematical model was developed that best describes wear dependence on the observed factors and it was found that all considered factors have a significant impact on the wear of nanocomposite.
C3  - Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20
T1  - Wear of A356/Al2O3 nanocomposites and optimisation of material and operating parameters
EP  - 18
SP  - 17
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4348
ER  - 

@conference{
author = "Gajević, Sandra and Miladinović, Slavica and Stojanović, Blaža and Vencl, Aleksandar",
year = "2021",
abstract = "The aim of this study was optimization of wear of nanocomposites with A356 alloy as a matrix. Different percentages of Al2O3 particles (0.2, 0.3 and 0.5 wt. %), with two average size (25 and 100 nm), were dispersed in the A356 matrix and fabricated by compocasting process. The tribological tests were conducted by the orthogonal L24 matrix. By application of the RSM method, a mathematical model was developed that best describes wear dependence on the observed factors and it was found that all considered factors have a significant impact on the wear of nanocomposite.",
journal = "Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20",
title = "Wear of A356/Al2O3 nanocomposites and optimisation of material and operating parameters",
pages = "18-17",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4348"
}

Gajević, S., Miladinović, S., Stojanović, B.,& Vencl, A.. (2021). Wear of A356/Al2O3 nanocomposites and optimisation of material and operating parameters. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, 17-18.
https://hdl.handle.net/21.15107/rcub_machinery_4348

Gajević S, Miladinović S, Stojanović B, Vencl A. Wear of A356/Al2O3 nanocomposites and optimisation of material and operating parameters. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20. 2021;:17-18.
https://hdl.handle.net/21.15107/rcub_machinery_4348 .

Gajević, Sandra, Miladinović, Slavica, Stojanović, Blaža, Vencl, Aleksandar, "Wear of A356/Al2O3 nanocomposites and optimisation of material and operating parameters" in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20 (2021):17-18,
https://hdl.handle.net/21.15107/rcub_machinery_4348 .

TY  - CHAP
AU  - Hvizdoš, Pavol
AU  - Vencl, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4354
AB  - Carbon based nanophases, such as carbon nanotubes and graphene nanoplatelets, are materials with exceptional properties such as mechanical strength, stiffness, electrical and thermal conductivity. Recently, they have been used as additives to ceramic matrix materials (based on Si3N4, SiC, B4C) with the aim to improve their fracture toughness and strength, tribological behavior (reduce friction acting as solid lubricant and increase wear resistance due to improved toughness), as well as to increase their electrical conductivity. The article brings the summary of these worldwide efforts. It describes the development of the new materials, their preparation by novel techniques, microstructure characterization, mechanical properties, tribological behavior, and electrical conductivity results.
PB  - Elsevier Inc.
T2  - Encyclopedia of Materials: Composites, Volume 2
T1  - Ceramic matrix composites with carbon nanophases: Development, structure, mechanical and tribological properties and electrical conductivity
EP  - 133
SP  - 116
DO  - 10.1016/B978-0-12-803581-8.11858-2
ER  - 

@inbook{
author = "Hvizdoš, Pavol and Vencl, Aleksandar",
year = "2021",
abstract = "Carbon based nanophases, such as carbon nanotubes and graphene nanoplatelets, are materials with exceptional properties such as mechanical strength, stiffness, electrical and thermal conductivity. Recently, they have been used as additives to ceramic matrix materials (based on Si3N4, SiC, B4C) with the aim to improve their fracture toughness and strength, tribological behavior (reduce friction acting as solid lubricant and increase wear resistance due to improved toughness), as well as to increase their electrical conductivity. The article brings the summary of these worldwide efforts. It describes the development of the new materials, their preparation by novel techniques, microstructure characterization, mechanical properties, tribological behavior, and electrical conductivity results.",
publisher = "Elsevier Inc.",
journal = "Encyclopedia of Materials: Composites, Volume 2",
booktitle = "Ceramic matrix composites with carbon nanophases: Development, structure, mechanical and tribological properties and electrical conductivity",
pages = "133-116",
doi = "10.1016/B978-0-12-803581-8.11858-2"
}

Hvizdoš, P.,& Vencl, A.. (2021). Ceramic matrix composites with carbon nanophases: Development, structure, mechanical and tribological properties and electrical conductivity. in Encyclopedia of Materials: Composites, Volume 2
Elsevier Inc.., 116-133.
https://doi.org/10.1016/B978-0-12-803581-8.11858-2

Hvizdoš P, Vencl A. Ceramic matrix composites with carbon nanophases: Development, structure, mechanical and tribological properties and electrical conductivity. in Encyclopedia of Materials: Composites, Volume 2. 2021;:116-133.
doi:10.1016/B978-0-12-803581-8.11858-2 .

Hvizdoš, Pavol, Vencl, Aleksandar, "Ceramic matrix composites with carbon nanophases: Development, structure, mechanical and tribological properties and electrical conductivity" in Encyclopedia of Materials: Composites, Volume 2 (2021):116-133,
https://doi.org/10.1016/B978-0-12-803581-8.11858-2 . .

TY  - CONF
AU  - Kandeva, Mara
AU  - Kalitchin, Zhecho
AU  - Zadorozhnaya, Elena
AU  - Vencl, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4350
AB  - The paper exposes experimental results of the performance characteristics (coefficient of friction, contact temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 %. All results were compared with the results obtained for the base rapeseed oil. They showed that the metal-containing additive in rapeseed oil reduced all characteristics (coefficient of friction, contact temperature and wear). It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it.
C3  - Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021
T1  - Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil
EP  - 80
SP  - 79
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4350
ER  - 

@conference{
author = "Kandeva, Mara and Kalitchin, Zhecho and Zadorozhnaya, Elena and Vencl, Aleksandar",
year = "2021",
abstract = "The paper exposes experimental results of the performance characteristics (coefficient of friction, contact temperature and wear) of the biolubricant based on rapeseed oil. The amount of commercial metal-containing additive in formulated lubricant was 1, 1.5, 3 and 5 %. All results were compared with the results obtained for the base rapeseed oil. They showed that the metal-containing additive in rapeseed oil reduced all characteristics (coefficient of friction, contact temperature and wear). It was also found that the dependence of all characteristics on the amount of additive is nonlinear and that there is an optimal value of it.",
journal = "Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021",
title = "Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil",
pages = "80-79",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4350"
}

Kandeva, M., Kalitchin, Z., Zadorozhnaya, E.,& Vencl, A.. (2021). Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021, 79-80.
https://hdl.handle.net/21.15107/rcub_machinery_4350

Kandeva M, Kalitchin Z, Zadorozhnaya E, Vencl A. Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil. in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021. 2021;:79-80.
https://hdl.handle.net/21.15107/rcub_machinery_4350 .

Kandeva, Mara, Kalitchin, Zhecho, Zadorozhnaya, Elena, Vencl, Aleksandar, "Influence of the amount of metal-containing additive on performance characteristics of lubricant based on rapeseed oil" in Proceedings of the 10th International Conference on Tribology – BALKANTRIB '20, Belgrade, Serbia, 20 – 22 May 2021 (2021):79-80,
https://hdl.handle.net/21.15107/rcub_machinery_4350 .

TY  - GEN
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4367
PB  - University of Belgrade, Faculty of Mechanical Engineering
PB  - Serbian Tribology Society
T1  - Proceedings of the 10th International Conference on Tribology BALKANTRIB '20, May 20 - 22, 2021, Belgrade, Serbia
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4367
ER  - 

@misc{
editor = "Vencl, Aleksandar",
year = "2021",
publisher = "University of Belgrade, Faculty of Mechanical Engineering, Serbian Tribology Society",
title = "Proceedings of the 10th International Conference on Tribology BALKANTRIB '20, May 20 - 22, 2021, Belgrade, Serbia",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4367"
}

Vencl, A.. (2021). Proceedings of the 10th International Conference on Tribology BALKANTRIB '20, May 20 - 22, 2021, Belgrade, Serbia. 
University of Belgrade, Faculty of Mechanical Engineering..
https://hdl.handle.net/21.15107/rcub_machinery_4367

Vencl A. Proceedings of the 10th International Conference on Tribology BALKANTRIB '20, May 20 - 22, 2021, Belgrade, Serbia. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_4367 .

Vencl, Aleksandar, "Proceedings of the 10th International Conference on Tribology BALKANTRIB '20, May 20 - 22, 2021, Belgrade, Serbia" (2021),
https://hdl.handle.net/21.15107/rcub_machinery_4367 .

TY  - GEN
AU  - Mladenović, Ivana
AU  - Lamovec, Jelena
AU  - Vorkapić, Miloš
AU  - Frantlović, Miloš
AU  - Poljak, Predrag
AU  - Obradov, Marko
AU  - Vencl, Aleksandar
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/4359
T1  - Laboratorijski prototip automatizovanog uređaja za ispitivanje adhezije testom na savijanje tankih metalnih filmova na fleksibilnim folijama
UR  - https://hdl.handle.net/21.15107/rcub_machinery_4359
ER  - 

@misc{
author = "Mladenović, Ivana and Lamovec, Jelena and Vorkapić, Miloš and Frantlović, Miloš and Poljak, Predrag and Obradov, Marko and Vencl, Aleksandar",
year = "2021",
title = "Laboratorijski prototip automatizovanog uređaja za ispitivanje adhezije testom na savijanje tankih metalnih filmova na fleksibilnim folijama",
url = "https://hdl.handle.net/21.15107/rcub_machinery_4359"
}

Mladenović, I., Lamovec, J., Vorkapić, M., Frantlović, M., Poljak, P., Obradov, M.,& Vencl, A.. (2021). Laboratorijski prototip automatizovanog uređaja za ispitivanje adhezije testom na savijanje tankih metalnih filmova na fleksibilnim folijama. .
https://hdl.handle.net/21.15107/rcub_machinery_4359

Mladenović I, Lamovec J, Vorkapić M, Frantlović M, Poljak P, Obradov M, Vencl A. Laboratorijski prototip automatizovanog uređaja za ispitivanje adhezije testom na savijanje tankih metalnih filmova na fleksibilnim folijama. 2021;.
https://hdl.handle.net/21.15107/rcub_machinery_4359 .

Mladenović, Ivana, Lamovec, Jelena, Vorkapić, Miloš, Frantlović, Miloš, Poljak, Predrag, Obradov, Marko, Vencl, Aleksandar, "Laboratorijski prototip automatizovanog uređaja za ispitivanje adhezije testom na savijanje tankih metalnih filmova na fleksibilnim folijama" (2021),
https://hdl.handle.net/21.15107/rcub_machinery_4359 .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Šljivić, Veljko
AU  - Pokusova, Marcela
AU  - Kandeva, Mara
AU  - Sun, HongGuang
AU  - Zadorozhnaya, Elena
AU  - Bobić, Ilija
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3615
AB  - The investigated metal-metal composites were produced by the compocasting process using the standard zinc-aluminium alloy ZA-27 as a matrix and titanium microparticles (particle size approx. 10 mu m) as a secondary phase. The amount of Ti microparticles was 1 and 2 wt%. Small amount (0.5 wt%) of alumina nanoparticles (particle size 20-30 nm) is also used, as reinforcement. The aim of the presented research was to evaluate the possibility of producing such composites, as well as to see the effect of the addition of Ti microparticles and/or alumina nanoparticles on their microstructure, mechanical and tribological properties. Microstructure and worn surfaces analysis were performed by scanning electron microscope, and mechanical properties were analysed through the Vickers microhardness values. Tribological properties were determined on tribometer with line contact, under mixed lubrication conditions. Microstructural analysis showed that the distribution of Ti microparticles has been improved due to the addition of Al2O3 nanoparticles. This better distribution did not show any significant influence on the microhardness values or coefficient of friction values of the composites, but it induced higher wear resistance of metal-metal composites reinforced with Al2O3 nanoparticles. Better distribution and higher amount of Ti particles increased the surface area of the matrix that was protected with Ti particles during sliding and reduced wear.
PB  - Springer Int Publ Ag, Cham
T2  - International Journal of Metalcasting
T1  - Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles
EP  - 1411
IS  - 4
SP  - 1402
VL  - 15
DO  - 10.1007/s40962-020-00565-5
ER  - 

@article{
author = "Vencl, Aleksandar and Šljivić, Veljko and Pokusova, Marcela and Kandeva, Mara and Sun, HongGuang and Zadorozhnaya, Elena and Bobić, Ilija",
year = "2021",
abstract = "The investigated metal-metal composites were produced by the compocasting process using the standard zinc-aluminium alloy ZA-27 as a matrix and titanium microparticles (particle size approx. 10 mu m) as a secondary phase. The amount of Ti microparticles was 1 and 2 wt%. Small amount (0.5 wt%) of alumina nanoparticles (particle size 20-30 nm) is also used, as reinforcement. The aim of the presented research was to evaluate the possibility of producing such composites, as well as to see the effect of the addition of Ti microparticles and/or alumina nanoparticles on their microstructure, mechanical and tribological properties. Microstructure and worn surfaces analysis were performed by scanning electron microscope, and mechanical properties were analysed through the Vickers microhardness values. Tribological properties were determined on tribometer with line contact, under mixed lubrication conditions. Microstructural analysis showed that the distribution of Ti microparticles has been improved due to the addition of Al2O3 nanoparticles. This better distribution did not show any significant influence on the microhardness values or coefficient of friction values of the composites, but it induced higher wear resistance of metal-metal composites reinforced with Al2O3 nanoparticles. Better distribution and higher amount of Ti particles increased the surface area of the matrix that was protected with Ti particles during sliding and reduced wear.",
publisher = "Springer Int Publ Ag, Cham",
journal = "International Journal of Metalcasting",
title = "Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles",
pages = "1411-1402",
number = "4",
volume = "15",
doi = "10.1007/s40962-020-00565-5"
}

Vencl, A., Šljivić, V., Pokusova, M., Kandeva, M., Sun, H., Zadorozhnaya, E.,& Bobić, I.. (2021). Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles. in International Journal of Metalcasting
Springer Int Publ Ag, Cham., 15(4), 1402-1411.
https://doi.org/10.1007/s40962-020-00565-5

Vencl A, Šljivić V, Pokusova M, Kandeva M, Sun H, Zadorozhnaya E, Bobić I. Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles. in International Journal of Metalcasting. 2021;15(4):1402-1411.
doi:10.1007/s40962-020-00565-5 .

Vencl, Aleksandar, Šljivić, Veljko, Pokusova, Marcela, Kandeva, Mara, Sun, HongGuang, Zadorozhnaya, Elena, Bobić, Ilija, "Production, microstructure and tribological properties of Zn-Al/Ti metal-metal composites reinforced with alumina nanoparticles" in International Journal of Metalcasting, 15, no. 4 (2021):1402-1411,
https://doi.org/10.1007/s40962-020-00565-5 . .

TY  - JOUR
AU  - Vencl, Aleksandar
AU  - Kandeva, Mara
AU  - Zadorozhnaya, Elena
AU  - Svoboda, Petr
AU  - Michalec, Michal
AU  - Milivojević, Aleksandar
AU  - Trdan, Uroš
PY  - 2021
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3591
AB  - Metal matrix nanocomposites represent a relatively new class of material, which is still being extensively investigated. Most of the studies, however, are devoted to aluminium- or magnesium-based nanocomposites. A limited number of studies focus on zinc alloy base nanocomposites, with fewer still concentrating on zinc alloy base micro-nanocomposites. In addition, most of the tribological studies investigate adhesive or abrasive wear resistance, whereas studies of erosive wear resistance lag well behind. It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to a slight increase in erosive wear resistance. Upon discovering that, the aim became to produce micro-nanocomposites that would retain the positive effect of nanoparticles, while further elevating performance, by combining microparticles with nanoparticles. The ZA-27 alloy-based micro-nanocomposites were reinforced with 3 wt. % Al2O3 microparticles (particle size approx. 36 mu m) and with four different amounts (0.3, 0.5, 0.7 and 1 wt. %) of Al2O3 nanoparticles (particle size 20-30 nm). Tested materials were produced by the compocasting process, with mechanical alloying pre-processing. Solid particle erosive wear testing, with particle impact angle of 90 degrees, showed that all micro-nanocomposites had significantly increased wear resistance in comparison to the reference material.
PB  - Sage Publications Ltd, London
T2  - Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic
T1  - Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites
EP  - 1518
IS  - 7
SP  - 1509
VL  - 235
DO  - 10.1177/1464420721994870
ER  - 

@article{
author = "Vencl, Aleksandar and Kandeva, Mara and Zadorozhnaya, Elena and Svoboda, Petr and Michalec, Michal and Milivojević, Aleksandar and Trdan, Uroš",
year = "2021",
abstract = "Metal matrix nanocomposites represent a relatively new class of material, which is still being extensively investigated. Most of the studies, however, are devoted to aluminium- or magnesium-based nanocomposites. A limited number of studies focus on zinc alloy base nanocomposites, with fewer still concentrating on zinc alloy base micro-nanocomposites. In addition, most of the tribological studies investigate adhesive or abrasive wear resistance, whereas studies of erosive wear resistance lag well behind. It was previously shown that the presence of nanoparticles in ZA-27 alloy-based nanocomposites led to a slight increase in erosive wear resistance. Upon discovering that, the aim became to produce micro-nanocomposites that would retain the positive effect of nanoparticles, while further elevating performance, by combining microparticles with nanoparticles. The ZA-27 alloy-based micro-nanocomposites were reinforced with 3 wt. % Al2O3 microparticles (particle size approx. 36 mu m) and with four different amounts (0.3, 0.5, 0.7 and 1 wt. %) of Al2O3 nanoparticles (particle size 20-30 nm). Tested materials were produced by the compocasting process, with mechanical alloying pre-processing. Solid particle erosive wear testing, with particle impact angle of 90 degrees, showed that all micro-nanocomposites had significantly increased wear resistance in comparison to the reference material.",
publisher = "Sage Publications Ltd, London",
journal = "Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic",
title = "Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites",
pages = "1518-1509",
number = "7",
volume = "235",
doi = "10.1177/1464420721994870"
}

Vencl, A., Kandeva, M., Zadorozhnaya, E., Svoboda, P., Michalec, M., Milivojević, A.,& Trdan, U.. (2021). Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites. in Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic
Sage Publications Ltd, London., 235(7), 1509-1518.
https://doi.org/10.1177/1464420721994870

Vencl A, Kandeva M, Zadorozhnaya E, Svoboda P, Michalec M, Milivojević A, Trdan U. Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites. in Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic. 2021;235(7):1509-1518.
doi:10.1177/1464420721994870 .

Vencl, Aleksandar, Kandeva, Mara, Zadorozhnaya, Elena, Svoboda, Petr, Michalec, Michal, Milivojević, Aleksandar, Trdan, Uroš, "Studies on structural, mechanical and erosive wear properties of ZA-27 alloy-based micro-nanocomposites" in Proceedings of The Institution of Mechanical Engineers Part L-Journal of Materials-Design and Applic, 235, no. 7 (2021):1509-1518,
https://doi.org/10.1177/1464420721994870 . .