TY  - JOUR
AU  - Samolov, Aleksandra D.
AU  - Simić, Danica M.
AU  - Fidanovski, Bojana Z.
AU  - Obradović, Vera
AU  - Tomić, Ljubiša D.
AU  - Knežević, Dragan M.
PY  - 2021
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/11786
AB  - In order to examine the possibility to improve its camouflage properties standard cotton fabric with camouflage print was impregnated with poly(vinyl butyral), PVB and fullerene-like nanoparticles of tungsten disulfide, PVB/IF-WS2. FTIR analysis excluded any possible chemical interaction of IF-WS2 with PVB and the fabric. The camouflage behavior of the impregnated fabric has been examined firstly in the VIS part of the spectrum. Diffuse reflection, specular gloss and color coordinates were measured for three different shades (black, brown and dark green). Thermal imaging was applied to examine the camouflage abilities of this impregnation in IR part of the spectrum. The obtained results show that PVB/IF-WS2 impregnation system induced enhacement of the materials camouflage properties, i.e. that IF-WS2 have a positive effect on spectrophotometric characteristics of the fabric. (c) 2020 China Ordnance Society. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).
T2  - Defence Technology
T1  - Improvement of VIS and IR camouflage properties by impregnating cotton fabric with PVB/IF-WS2
VL  - 17
IS  - 6
SP  - 2050
EP  - 2056
DO  - 10.1016/j.dt.2020.10.008
ER  - 

@article{
author = "Samolov, Aleksandra D. and Simić, Danica M. and Fidanovski, Bojana Z. and Obradović, Vera and Tomić, Ljubiša D. and Knežević, Dragan M.",
year = "2021",
abstract = "In order to examine the possibility to improve its camouflage properties standard cotton fabric with camouflage print was impregnated with poly(vinyl butyral), PVB and fullerene-like nanoparticles of tungsten disulfide, PVB/IF-WS2. FTIR analysis excluded any possible chemical interaction of IF-WS2 with PVB and the fabric. The camouflage behavior of the impregnated fabric has been examined firstly in the VIS part of the spectrum. Diffuse reflection, specular gloss and color coordinates were measured for three different shades (black, brown and dark green). Thermal imaging was applied to examine the camouflage abilities of this impregnation in IR part of the spectrum. The obtained results show that PVB/IF-WS2 impregnation system induced enhacement of the materials camouflage properties, i.e. that IF-WS2 have a positive effect on spectrophotometric characteristics of the fabric. (c) 2020 China Ordnance Society. Publishing services by Elsevier B.V. on behalf of KeAi Communications Co. Ltd. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/ licenses/by-nc-nd/4.0/).",
journal = "Defence Technology",
title = "Improvement of VIS and IR camouflage properties by impregnating cotton fabric with PVB/IF-WS2",
volume = "17",
number = "6",
pages = "2050-2056",
doi = "10.1016/j.dt.2020.10.008"
}

Samolov, A. D., Simić, D. M., Fidanovski, B. Z., Obradović, V., Tomić, L. D.,& Knežević, D. M.. (2021). Improvement of VIS and IR camouflage properties by impregnating cotton fabric with PVB/IF-WS2. in Defence Technology, 17(6), 2050-2056.
https://doi.org/10.1016/j.dt.2020.10.008

Samolov AD, Simić DM, Fidanovski BZ, Obradović V, Tomić LD, Knežević DM. Improvement of VIS and IR camouflage properties by impregnating cotton fabric with PVB/IF-WS2. in Defence Technology. 2021;17(6):2050-2056.
doi:10.1016/j.dt.2020.10.008 .

Samolov, Aleksandra D., Simić, Danica M., Fidanovski, Bojana Z., Obradović, Vera, Tomić, Ljubiša D., Knežević, Dragan M., "Improvement of VIS and IR camouflage properties by impregnating cotton fabric with PVB/IF-WS2" in Defence Technology, 17, no. 6 (2021):2050-2056,
https://doi.org/10.1016/j.dt.2020.10.008 . .

TY  - JOUR
AU  - Knežević, Dragan M.
AU  - Petrović, Velimir
AU  - Vorotović, Goran
AU  - Pajković, Vladimir
AU  - Bralović, Predrag
PY  - 2020
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/9035
AB  - Alternative propulsion fuels for diesel engines were highlights for a variety of research activities within a large number of R&D labs in the world. Curiosity, as well as basic interest in alternative fuel has been immense because of its reproducibility, renewability, as well as good ecological characteristics. Another reason for this interest is a favorable impact on the economies of the countries engaged in their production, by processing that kind of bio fuel. This paper presents the results of testing and research of the three types of alternative fuel gained from bio oil. Analyses and comparison of the dynamics of combustion process of these alternative fuels were done in relation to the reference diesel fuel. Burning process of methyl esters rapeseed (RME100), soya oil (SME100), waste cooking palm oil (PME100), as well as of regular euro diesel fuel were investigated. It was found that these fuels were highly usable in diesel engines if they had been produced according to a proper standard procedure under standard EN 14214. The application of bio fuel is also very interesting for the propulsion of agricultural engines and machinery, because it enables the individual farming of bio fuel products necessary for the appropriate own machinery.
T2  - FME Transactions
T1  - Combustion characteristics of several types of biofuel in a diesel engine
VL  - 48
IS  - 2
SP  - 319
EP  - 328
DO  - 10.5937/fme2002319K
ER  - 

@article{
author = "Knežević, Dragan M. and Petrović, Velimir and Vorotović, Goran and Pajković, Vladimir and Bralović, Predrag",
year = "2020",
abstract = "Alternative propulsion fuels for diesel engines were highlights for a variety of research activities within a large number of R&D labs in the world. Curiosity, as well as basic interest in alternative fuel has been immense because of its reproducibility, renewability, as well as good ecological characteristics. Another reason for this interest is a favorable impact on the economies of the countries engaged in their production, by processing that kind of bio fuel. This paper presents the results of testing and research of the three types of alternative fuel gained from bio oil. Analyses and comparison of the dynamics of combustion process of these alternative fuels were done in relation to the reference diesel fuel. Burning process of methyl esters rapeseed (RME100), soya oil (SME100), waste cooking palm oil (PME100), as well as of regular euro diesel fuel were investigated. It was found that these fuels were highly usable in diesel engines if they had been produced according to a proper standard procedure under standard EN 14214. The application of bio fuel is also very interesting for the propulsion of agricultural engines and machinery, because it enables the individual farming of bio fuel products necessary for the appropriate own machinery.",
journal = "FME Transactions",
title = "Combustion characteristics of several types of biofuel in a diesel engine",
volume = "48",
number = "2",
pages = "319-328",
doi = "10.5937/fme2002319K"
}

Knežević, D. M., Petrović, V., Vorotović, G., Pajković, V.,& Bralović, P.. (2020). Combustion characteristics of several types of biofuel in a diesel engine. in FME Transactions, 48(2), 319-328.
https://doi.org/10.5937/fme2002319K

Knežević DM, Petrović V, Vorotović G, Pajković V, Bralović P. Combustion characteristics of several types of biofuel in a diesel engine. in FME Transactions. 2020;48(2):319-328.
doi:10.5937/fme2002319K .

Knežević, Dragan M., Petrović, Velimir, Vorotović, Goran, Pajković, Vladimir, Bralović, Predrag, "Combustion characteristics of several types of biofuel in a diesel engine" in FME Transactions, 48, no. 2 (2020):319-328,
https://doi.org/10.5937/fme2002319K . .

TY  - JOUR
AU  - Petrovic, Velimir S.
AU  - Janković, Slobodan P.
AU  - Tomić, Miroljub V.
AU  - Jovanović, Zoran S.
AU  - Knežević, Dragan M.
PY  - 2011
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/4632
AB  - This review paper considers possible instrumentation for diesel engine fine particles exhaust emission evaluation. The modern diesel engines have extremely low particles emission almost at the level of measurement error of existing gravimetric measurement method. Since coarse particles are eliminated by new engine technologies, fine particles, with very negative effects on human health, dominate in the emission of current diesel engine. Therefore, it is necessary not only to measure mass of emitted particles but also to investigate other important particle characteristics as: particles number, particle size, particle number and mass distribution, particle active surface, particle composition, etc. Therefore, existing measurement technologies used in aerosol science can be used also to study diesel engine particles properties. This most common instrumentation in aerosol technique is shortly reviewed in the paper with special attention on candidate instruments included in EU program on portable emissions measurement systems.
T2  - Thermal Science
T1  - The Possibilities for Measurement and Characterization of Diesel Engine Fine Particles - a Review
VL  - 15
IS  - 4
SP  - 915
EP  - 938
DO  - 10.2298/TSCI110509092P
ER  - 

@article{
author = "Petrovic, Velimir S. and Janković, Slobodan P. and Tomić, Miroljub V. and Jovanović, Zoran S. and Knežević, Dragan M.",
year = "2011",
abstract = "This review paper considers possible instrumentation for diesel engine fine particles exhaust emission evaluation. The modern diesel engines have extremely low particles emission almost at the level of measurement error of existing gravimetric measurement method. Since coarse particles are eliminated by new engine technologies, fine particles, with very negative effects on human health, dominate in the emission of current diesel engine. Therefore, it is necessary not only to measure mass of emitted particles but also to investigate other important particle characteristics as: particles number, particle size, particle number and mass distribution, particle active surface, particle composition, etc. Therefore, existing measurement technologies used in aerosol science can be used also to study diesel engine particles properties. This most common instrumentation in aerosol technique is shortly reviewed in the paper with special attention on candidate instruments included in EU program on portable emissions measurement systems.",
journal = "Thermal Science",
title = "The Possibilities for Measurement and Characterization of Diesel Engine Fine Particles - a Review",
volume = "15",
number = "4",
pages = "915-938",
doi = "10.2298/TSCI110509092P"
}

Petrovic, V. S., Janković, S. P., Tomić, M. V., Jovanović, Z. S.,& Knežević, D. M.. (2011). The Possibilities for Measurement and Characterization of Diesel Engine Fine Particles - a Review. in Thermal Science, 15(4), 915-938.
https://doi.org/10.2298/TSCI110509092P

Petrovic VS, Janković SP, Tomić MV, Jovanović ZS, Knežević DM. The Possibilities for Measurement and Characterization of Diesel Engine Fine Particles - a Review. in Thermal Science. 2011;15(4):915-938.
doi:10.2298/TSCI110509092P .

Petrovic, Velimir S., Janković, Slobodan P., Tomić, Miroljub V., Jovanović, Zoran S., Knežević, Dragan M., "The Possibilities for Measurement and Characterization of Diesel Engine Fine Particles - a Review" in Thermal Science, 15, no. 4 (2011):915-938,
https://doi.org/10.2298/TSCI110509092P . .

TY  - JOUR
AU  - Tomić, Miroljub V.
AU  - Popovic, Slobodan J.
AU  - Miljic, Nenad L.
AU  - Petrović, Stojan V.
AU  - Cvetic, Milog R.
AU  - Knežević, Dragan M.
AU  - Jovanović, Zoran S.
PY  - 2008
UR  - https://vinar.vin.bg.ac.rs/handle/123456789/3429
AB  - In this paper a simplified procedure of an internal combustion engine in-cylinder pressure record analysis has been presented The method is very easy for programming and provides quick evaluation of the gas temperature and the rate of combustion. It is based on the consideration proposed by Hohenberg and Killman, but enhances the approach by involving the rate of heat transferred to the walls that was omitted in the original approach. It enables the evaluation of the complete rate Of heat released by combustion (often designated as gross heat release rate or fuel chemical energy release rate), not only the rate of heat transferred to the gas (which is often designated as net heat release rate). The accuracy of the method has been also analyzed and it is shown that the errors caused by the simplifications in the model are very small, particularly if the crank angle step is also small A several practical applications on recorded pressure diagrams taken from both spark ignition and compression ignition engine are presented as well.
T2  - Thermal Science
T1  - A quick, simplified approach to the evaluation of combustion rate from an internal combustion engine indicator diagram
VL  - 12
IS  - 1
SP  - 85
EP  - 102
DO  - 10.2298/TSCI0801085T
ER  - 

@article{
author = "Tomić, Miroljub V. and Popovic, Slobodan J. and Miljic, Nenad L. and Petrović, Stojan V. and Cvetic, Milog R. and Knežević, Dragan M. and Jovanović, Zoran S.",
year = "2008",
abstract = "In this paper a simplified procedure of an internal combustion engine in-cylinder pressure record analysis has been presented The method is very easy for programming and provides quick evaluation of the gas temperature and the rate of combustion. It is based on the consideration proposed by Hohenberg and Killman, but enhances the approach by involving the rate of heat transferred to the walls that was omitted in the original approach. It enables the evaluation of the complete rate Of heat released by combustion (often designated as gross heat release rate or fuel chemical energy release rate), not only the rate of heat transferred to the gas (which is often designated as net heat release rate). The accuracy of the method has been also analyzed and it is shown that the errors caused by the simplifications in the model are very small, particularly if the crank angle step is also small A several practical applications on recorded pressure diagrams taken from both spark ignition and compression ignition engine are presented as well.",
journal = "Thermal Science",
title = "A quick, simplified approach to the evaluation of combustion rate from an internal combustion engine indicator diagram",
volume = "12",
number = "1",
pages = "85-102",
doi = "10.2298/TSCI0801085T"
}

Tomić, M. V., Popovic, S. J., Miljic, N. L., Petrović, S. V., Cvetic, M. R., Knežević, D. M.,& Jovanović, Z. S.. (2008). A quick, simplified approach to the evaluation of combustion rate from an internal combustion engine indicator diagram. in Thermal Science, 12(1), 85-102.
https://doi.org/10.2298/TSCI0801085T

Tomić MV, Popovic SJ, Miljic NL, Petrović SV, Cvetic MR, Knežević DM, Jovanović ZS. A quick, simplified approach to the evaluation of combustion rate from an internal combustion engine indicator diagram. in Thermal Science. 2008;12(1):85-102.
doi:10.2298/TSCI0801085T .

Tomić, Miroljub V., Popovic, Slobodan J., Miljic, Nenad L., Petrović, Stojan V., Cvetic, Milog R., Knežević, Dragan M., Jovanović, Zoran S., "A quick, simplified approach to the evaluation of combustion rate from an internal combustion engine indicator diagram" in Thermal Science, 12, no. 1 (2008):85-102,
https://doi.org/10.2298/TSCI0801085T . .