TY  - JOUR
AU  - Jelić, Aleksandra
AU  - Sekulić, Milica
AU  - Travica, Milan
AU  - Grzetić, Jelena
AU  - Ugrinović, Vukašin
AU  - Marinković, Aleksandar D.
AU  - Bozić, Aleksandra
AU  - Stamenović, Marina
AU  - Putić, Slaviša
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3775
AB  - In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.
PB  - MDPI, Basel
T2  - Polymers
T1  - Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)
IS  - 6
VL  - 14
DO  - 10.3390/polym14061255
ER  - 

@article{
author = "Jelić, Aleksandra and Sekulić, Milica and Travica, Milan and Grzetić, Jelena and Ugrinović, Vukašin and Marinković, Aleksandar D. and Bozić, Aleksandra and Stamenović, Marina and Putić, Slaviša",
year = "2022",
abstract = "In this study, silicate nanofillers; dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite; were synthesized using four different methods and incorporated into the epoxy resin to improve its mechanical properties. Characterization of the newly synthesized nanofillers was performed using Fourier-transformation infrared (FTIR) spectroscopy, X-ray diffraction (XRD), scanning electron microscopy (SEM), and transmission electron microscopy (TEM). The purpose of this study was to analyze newly developed composite materials reinforced with silicate nanoparticles utilizing tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method. Analysis of deformation and displacement fields gives precise material behavior during testing. Testing results allowed a more reliable assessment of the structural integrity of epoxy composite materials reinforced using different silicate nanofillers. It was concluded that the addition of 3% of dicalcium silicate, magnesium silicate, tricalcium silicate, and wollastonite lead to the increasement of tensile strength up to 31.5%, 29.0%, 27.5%, and 23.5% in comparison with neat epoxy, respectively. In order to offer more trustworthy information about the viscoelastic behavior of neat epoxy and composites, a dynamic mechanical analysis (DMA) was also performed and rheological measurements of uncured epoxy matrix and epoxy suspensions were obtained.",
publisher = "MDPI, Basel",
journal = "Polymers",
title = "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)",
number = "6",
volume = "14",
doi = "10.3390/polym14061255"
}

Jelić, A., Sekulić, M., Travica, M., Grzetić, J., Ugrinović, V., Marinković, A. D., Bozić, A., Stamenović, M.,& Putić, S.. (2022). Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC). in Polymers
MDPI, Basel., 14(6).
https://doi.org/10.3390/polym14061255

Jelić A, Sekulić M, Travica M, Grzetić J, Ugrinović V, Marinković AD, Bozić A, Stamenović M, Putić S. Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC). in Polymers. 2022;14(6).
doi:10.3390/polym14061255 .

Jelić, Aleksandra, Sekulić, Milica, Travica, Milan, Grzetić, Jelena, Ugrinović, Vukašin, Marinković, Aleksandar D., Bozić, Aleksandra, Stamenović, Marina, Putić, Slaviša, "Determination of Mechanical Properties of Epoxy Composite Materials Reinforced with Silicate Nanofillers Using Digital Image Correlation (DIC)" in Polymers, 14, no. 6 (2022),
https://doi.org/10.3390/polym14061255 . .

TY  - CONF
AU  - Jelić, A.
AU  - Travica, Milan
AU  - Ugrinović, Vukašin
AU  - Božić, A.
AU  - Stamenović, Marina
AU  - Brkić, D.
AU  - Putić, Slaviša
PY  - 2022
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/3805
AB  - Due to its remarkable qualities, carbon fiber epoxy composite sandwich panels are used in a variety of engineering applications. The goal of this research is to use tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method to characterize carbon fiber reinforced composite sandwich panels with varied fiber orientations (0°/90° and ± 45°). The tested materials were composed of carbon fiber prepregs with epoxy resin systems and Aramid synthetic fiber. The properties of the materials were determined using full-field data derived from 3D DIC measurements and a set of experiments by according to ASTM standards. Values of maximum stress and strain at entire areas, break stress and strain, and toughness at entire areas and, modulus of elasticity of both structures were compared. The adherend's full-field, out-of-plane deformation, strain distribution, and strain evolution along the bond line were captured using a digital image correlation method, allowing the fracture mechanism to be visually defined. Since DIC produces the displacement field, the strain field must be deduced from it. The orientation of the fibers had a significant impact on the tensile properties of the tested materials. The results revealed that the specimen with 0°/90° fiber orientation had higher break stress and brittle fracture, whereas the specimen with ± 45° fiber orientation twisted in the fiber direction had higher elongation values while carrying the applied load. In order to complement previously obtained results, scanning electron microscopy (SEM) analysis of the fibers and core, as well as fracture surfaces was performed.
PB  - Springer Science and Business Media Deutschland GmbH
C3  - Lecture Notes in Networks and Systems
T1  - Comparison of Tensile Properties of Carbon/Epoxy Composite Materials with Different Fiber Orientation Using Digital Image Correlation
EP  - 255
SP  - 239
VL  - 323
DO  - 10.1007/978-3-030-86009-7_13
ER  - 

@conference{
author = "Jelić, A. and Travica, Milan and Ugrinović, Vukašin and Božić, A. and Stamenović, Marina and Brkić, D. and Putić, Slaviša",
year = "2022",
abstract = "Due to its remarkable qualities, carbon fiber epoxy composite sandwich panels are used in a variety of engineering applications. The goal of this research is to use tensile testing and a full-field non-contact 3D Digital Image Correlation (DIC) method to characterize carbon fiber reinforced composite sandwich panels with varied fiber orientations (0°/90° and ± 45°). The tested materials were composed of carbon fiber prepregs with epoxy resin systems and Aramid synthetic fiber. The properties of the materials were determined using full-field data derived from 3D DIC measurements and a set of experiments by according to ASTM standards. Values of maximum stress and strain at entire areas, break stress and strain, and toughness at entire areas and, modulus of elasticity of both structures were compared. The adherend's full-field, out-of-plane deformation, strain distribution, and strain evolution along the bond line were captured using a digital image correlation method, allowing the fracture mechanism to be visually defined. Since DIC produces the displacement field, the strain field must be deduced from it. The orientation of the fibers had a significant impact on the tensile properties of the tested materials. The results revealed that the specimen with 0°/90° fiber orientation had higher break stress and brittle fracture, whereas the specimen with ± 45° fiber orientation twisted in the fiber direction had higher elongation values while carrying the applied load. In order to complement previously obtained results, scanning electron microscopy (SEM) analysis of the fibers and core, as well as fracture surfaces was performed.",
publisher = "Springer Science and Business Media Deutschland GmbH",
journal = "Lecture Notes in Networks and Systems",
title = "Comparison of Tensile Properties of Carbon/Epoxy Composite Materials with Different Fiber Orientation Using Digital Image Correlation",
pages = "255-239",
volume = "323",
doi = "10.1007/978-3-030-86009-7_13"
}

Jelić, A., Travica, M., Ugrinović, V., Božić, A., Stamenović, M., Brkić, D.,& Putić, S.. (2022). Comparison of Tensile Properties of Carbon/Epoxy Composite Materials with Different Fiber Orientation Using Digital Image Correlation. in Lecture Notes in Networks and Systems
Springer Science and Business Media Deutschland GmbH., 323, 239-255.
https://doi.org/10.1007/978-3-030-86009-7_13

Jelić A, Travica M, Ugrinović V, Božić A, Stamenović M, Brkić D, Putić S. Comparison of Tensile Properties of Carbon/Epoxy Composite Materials with Different Fiber Orientation Using Digital Image Correlation. in Lecture Notes in Networks and Systems. 2022;323:239-255.
doi:10.1007/978-3-030-86009-7_13 .

Jelić, A., Travica, Milan, Ugrinović, Vukašin, Božić, A., Stamenović, Marina, Brkić, D., Putić, Slaviša, "Comparison of Tensile Properties of Carbon/Epoxy Composite Materials with Different Fiber Orientation Using Digital Image Correlation" in Lecture Notes in Networks and Systems, 323 (2022):239-255,
https://doi.org/10.1007/978-3-030-86009-7_13 . .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Jančić-Heinemann, Radmila
AU  - Balać, Igor
AU  - Jokić, B.
AU  - Putić, Slaviša
AU  - Petrović, R.
AU  - Janaćković, Đorđe
PY  - 2011
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1156
AB  - In this study, the influence of the shape and size of the pores on the mechanical properties of the obtained porous HAP-based bioceramics was investigated. The porous HAP-based bioceramics were obtained starting from spherical calcium hydroxyapatite powder, obtained by hydrothermal syntheses. The number of shapeless inter-agglomerate pores decreased and amount of spherical intra-agglomerate pores increased on increasing the sintering temperature from 1100 degrees C to 1250 degrees C. The shape of pores also changed with thermal treatment of specimens; the small pores remained spherical while the larger pores became more spherical in shape, as was proved by image analysis. A three-dimensional, finite element unit cell model was applied to evaluate the influence of pore shape on the mechanical strength of HAP ceramics. By analyzing the effect of. the shape of pores to the fracture toughness of sintered porous HAP bioceramics, it was observed that the more spherical the pores were, the tougher became the bioceramics. After sintering at 1250 degrees C for 2 h, measured toughness was 1.31 MPa m(1/2), which is a relatively high value for this type of bioceramics.
PB  - Elsevier Sci Ltd, Oxford
T2  - Ceramics International
T1  - The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics
EP  - 479
IS  - 2
SP  - 471
VL  - 37
DO  - 10.1016/j.ceramint.2010.09.014
ER  - 

@article{
author = "Veljović, Đorđe and Jančić-Heinemann, Radmila and Balać, Igor and Jokić, B. and Putić, Slaviša and Petrović, R. and Janaćković, Đorđe",
year = "2011",
abstract = "In this study, the influence of the shape and size of the pores on the mechanical properties of the obtained porous HAP-based bioceramics was investigated. The porous HAP-based bioceramics were obtained starting from spherical calcium hydroxyapatite powder, obtained by hydrothermal syntheses. The number of shapeless inter-agglomerate pores decreased and amount of spherical intra-agglomerate pores increased on increasing the sintering temperature from 1100 degrees C to 1250 degrees C. The shape of pores also changed with thermal treatment of specimens; the small pores remained spherical while the larger pores became more spherical in shape, as was proved by image analysis. A three-dimensional, finite element unit cell model was applied to evaluate the influence of pore shape on the mechanical strength of HAP ceramics. By analyzing the effect of. the shape of pores to the fracture toughness of sintered porous HAP bioceramics, it was observed that the more spherical the pores were, the tougher became the bioceramics. After sintering at 1250 degrees C for 2 h, measured toughness was 1.31 MPa m(1/2), which is a relatively high value for this type of bioceramics.",
publisher = "Elsevier Sci Ltd, Oxford",
journal = "Ceramics International",
title = "The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics",
pages = "479-471",
number = "2",
volume = "37",
doi = "10.1016/j.ceramint.2010.09.014"
}

Veljović, Đ., Jančić-Heinemann, R., Balać, I., Jokić, B., Putić, S., Petrović, R.,& Janaćković, Đ.. (2011). The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics. in Ceramics International
Elsevier Sci Ltd, Oxford., 37(2), 471-479.
https://doi.org/10.1016/j.ceramint.2010.09.014

Veljović Đ, Jančić-Heinemann R, Balać I, Jokić B, Putić S, Petrović R, Janaćković Đ. The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics. in Ceramics International. 2011;37(2):471-479.
doi:10.1016/j.ceramint.2010.09.014 .

Veljović, Đorđe, Jančić-Heinemann, Radmila, Balać, Igor, Jokić, B., Putić, Slaviša, Petrović, R., Janaćković, Đorđe, "The effect of the shape and size of the pores on the mechanical properties of porous HAP-based bioceramics" in Ceramics International, 37, no. 2 (2011):471-479,
https://doi.org/10.1016/j.ceramint.2010.09.014 . .

TY  - JOUR
AU  - Veljović, Đorđe
AU  - Palcevskis, E.
AU  - Dindune, A.
AU  - Putić, Slaviša
AU  - Balać, Igor
AU  - Petrović, R.
AU  - Janaćković, Đorđe
PY  - 2010
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/1083
AB  - Starting from two microspherical agglomerated HAP powders, porous biphasic HAP/TCP bioceramics were obtained by microwave sintering. During the sintering the HAP powders turned into biphasic mixtures, whereby HAP was the dominant crystalline phase in the case of the sample with the higher Ca/P ratio (HAP1) while alpha-TCP was the dominant crystalline phase in the sample with lower Ca/P ratio (HAP2). The porous microstructures of the obtained bioceramics were characterized by spherical intra-agglomerate pores and shapeless inter-agglomerate pores. The fracture toughness of the HAP1 and HAP2 samples microwave sintered at 1200 A degrees C for 15 min were 1.25 MPa m(1/2). The phase composition of the obtained bioceramics only had a minor effect on the indentation fracture toughness compared to a unique microstructure consisting of spherical intra-agglomerate pores with strong bonds between the spherical agglomerates. Cold isostatic pressing at 400 MPa before microwave sintering led to an increase in the fracture toughness of the biphasic HAP/TCP bioceramics to 1.35 MPa m(1/2).
PB  - Springer, New York
T2  - Journal of Materials Science
T1  - Microwave sintering improves the mechanical properties of biphasic calcium phosphates from hydroxyapatite microspheres produced from hydrothermal processing
EP  - 3183
IS  - 12
SP  - 3175
VL  - 45
DO  - 10.1007/s10853-010-4324-8
ER  - 

@article{
author = "Veljović, Đorđe and Palcevskis, E. and Dindune, A. and Putić, Slaviša and Balać, Igor and Petrović, R. and Janaćković, Đorđe",
year = "2010",
abstract = "Starting from two microspherical agglomerated HAP powders, porous biphasic HAP/TCP bioceramics were obtained by microwave sintering. During the sintering the HAP powders turned into biphasic mixtures, whereby HAP was the dominant crystalline phase in the case of the sample with the higher Ca/P ratio (HAP1) while alpha-TCP was the dominant crystalline phase in the sample with lower Ca/P ratio (HAP2). The porous microstructures of the obtained bioceramics were characterized by spherical intra-agglomerate pores and shapeless inter-agglomerate pores. The fracture toughness of the HAP1 and HAP2 samples microwave sintered at 1200 A degrees C for 15 min were 1.25 MPa m(1/2). The phase composition of the obtained bioceramics only had a minor effect on the indentation fracture toughness compared to a unique microstructure consisting of spherical intra-agglomerate pores with strong bonds between the spherical agglomerates. Cold isostatic pressing at 400 MPa before microwave sintering led to an increase in the fracture toughness of the biphasic HAP/TCP bioceramics to 1.35 MPa m(1/2).",
publisher = "Springer, New York",
journal = "Journal of Materials Science",
title = "Microwave sintering improves the mechanical properties of biphasic calcium phosphates from hydroxyapatite microspheres produced from hydrothermal processing",
pages = "3183-3175",
number = "12",
volume = "45",
doi = "10.1007/s10853-010-4324-8"
}

Veljović, Đ., Palcevskis, E., Dindune, A., Putić, S., Balać, I., Petrović, R.,& Janaćković, Đ.. (2010). Microwave sintering improves the mechanical properties of biphasic calcium phosphates from hydroxyapatite microspheres produced from hydrothermal processing. in Journal of Materials Science
Springer, New York., 45(12), 3175-3183.
https://doi.org/10.1007/s10853-010-4324-8

Veljović Đ, Palcevskis E, Dindune A, Putić S, Balać I, Petrović R, Janaćković Đ. Microwave sintering improves the mechanical properties of biphasic calcium phosphates from hydroxyapatite microspheres produced from hydrothermal processing. in Journal of Materials Science. 2010;45(12):3175-3183.
doi:10.1007/s10853-010-4324-8 .

Veljović, Đorđe, Palcevskis, E., Dindune, A., Putić, Slaviša, Balać, Igor, Petrović, R., Janaćković, Đorđe, "Microwave sintering improves the mechanical properties of biphasic calcium phosphates from hydroxyapatite microspheres produced from hydrothermal processing" in Journal of Materials Science, 45, no. 12 (2010):3175-3183,
https://doi.org/10.1007/s10853-010-4324-8 . .

TY  - JOUR
AU  - Međo, Bojan
AU  - Rakin, Marko
AU  - Zrilić, Milorad
AU  - Putić, Slaviša
AU  - Sedmak, Aleksandar
PY  - 2009
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/980
AB  - We analyze the level of damage to 14MoV63 steel for steam pipelines under the conditions of crack-growth initiation according to the mechanism of ductile fracture. The state of the material after service for about 100,000 h at the power plant is estimated by using a combined experimental and numerical procedure based on the local approach to fracture. The level of damage is determined by analyzing the material taken from the pipeline (aged) and new (virgin) material of the same grade (for the sake of comparison). The critical values of the J-integral are determined on single-edge notched bend (SENB) specimens both experimentally and by using a simplified procedure of local approach without knowing the microstructural parameters. Two micromechanical models are applied: the Rice - Tracey models modified by Beremin (uncoupled) and the complete Gurson model (coupled).
PB  - Springer, New York
T2  - Materials Science
T1  - Micromechanical estimates of the critical values of j-integral for the steel of steam pipelines
EP  - 531
IS  - 4
SP  - 523
VL  - 45
DO  - 10.1007/s11003-010-9210-7
ER  - 

@article{
author = "Međo, Bojan and Rakin, Marko and Zrilić, Milorad and Putić, Slaviša and Sedmak, Aleksandar",
year = "2009",
abstract = "We analyze the level of damage to 14MoV63 steel for steam pipelines under the conditions of crack-growth initiation according to the mechanism of ductile fracture. The state of the material after service for about 100,000 h at the power plant is estimated by using a combined experimental and numerical procedure based on the local approach to fracture. The level of damage is determined by analyzing the material taken from the pipeline (aged) and new (virgin) material of the same grade (for the sake of comparison). The critical values of the J-integral are determined on single-edge notched bend (SENB) specimens both experimentally and by using a simplified procedure of local approach without knowing the microstructural parameters. Two micromechanical models are applied: the Rice - Tracey models modified by Beremin (uncoupled) and the complete Gurson model (coupled).",
publisher = "Springer, New York",
journal = "Materials Science",
title = "Micromechanical estimates of the critical values of j-integral for the steel of steam pipelines",
pages = "531-523",
number = "4",
volume = "45",
doi = "10.1007/s11003-010-9210-7"
}

Međo, B., Rakin, M., Zrilić, M., Putić, S.,& Sedmak, A.. (2009). Micromechanical estimates of the critical values of j-integral for the steel of steam pipelines. in Materials Science
Springer, New York., 45(4), 523-531.
https://doi.org/10.1007/s11003-010-9210-7

Međo B, Rakin M, Zrilić M, Putić S, Sedmak A. Micromechanical estimates of the critical values of j-integral for the steel of steam pipelines. in Materials Science. 2009;45(4):523-531.
doi:10.1007/s11003-010-9210-7 .

Međo, Bojan, Rakin, Marko, Zrilić, Milorad, Putić, Slaviša, Sedmak, Aleksandar, "Micromechanical estimates of the critical values of j-integral for the steel of steam pipelines" in Materials Science, 45, no. 4 (2009):523-531,
https://doi.org/10.1007/s11003-010-9210-7 . .

TY  - JOUR
AU  - Putić, Slaviša
AU  - Bošnjak, Srđan
AU  - Bošnjak, Srđan
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/817
AB  - A residual strength degradation model for two orientations of fibers of carbon-epoxy composite is proposed. The model is constructed on the basis of an analysis of a gradual decrease in the residual strength of the composite and an increase in loading cycles. Two groups of specimens were subjected to tensile tests under static and dynamic loading. It was necessary to determine the relationship between static and dynamic properties of the composite to predict the residual strength for different numbers of loading cycles. On the basis of initial experimental results, the values of the parameters obtained by using the model were computed numerically. The statistical distributions of the corresponding ultimate strengths obtained by using the model were compared with the distributions of experimental results, and their good correlation is demonstrated.
PB  - Consultants Bureau/Springer, New York
T2  - Materials Science
T1  - Application of the residual strength degradation model to carbon-epoxy composite
EP  - 450
IS  - 3
SP  - 446
VL  - 44
DO  - 10.1007/s11003-008-9094-y
ER  - 

@article{
author = "Putić, Slaviša and Bošnjak, Srđan and Bošnjak, Srđan",
year = "2008",
abstract = "A residual strength degradation model for two orientations of fibers of carbon-epoxy composite is proposed. The model is constructed on the basis of an analysis of a gradual decrease in the residual strength of the composite and an increase in loading cycles. Two groups of specimens were subjected to tensile tests under static and dynamic loading. It was necessary to determine the relationship between static and dynamic properties of the composite to predict the residual strength for different numbers of loading cycles. On the basis of initial experimental results, the values of the parameters obtained by using the model were computed numerically. The statistical distributions of the corresponding ultimate strengths obtained by using the model were compared with the distributions of experimental results, and their good correlation is demonstrated.",
publisher = "Consultants Bureau/Springer, New York",
journal = "Materials Science",
title = "Application of the residual strength degradation model to carbon-epoxy composite",
pages = "450-446",
number = "3",
volume = "44",
doi = "10.1007/s11003-008-9094-y"
}

Putić, S., Bošnjak, S.,& Bošnjak, S.. (2008). Application of the residual strength degradation model to carbon-epoxy composite. in Materials Science
Consultants Bureau/Springer, New York., 44(3), 446-450.
https://doi.org/10.1007/s11003-008-9094-y

Putić S, Bošnjak S, Bošnjak S. Application of the residual strength degradation model to carbon-epoxy composite. in Materials Science. 2008;44(3):446-450.
doi:10.1007/s11003-008-9094-y .

Putić, Slaviša, Bošnjak, Srđan, Bošnjak, Srđan, "Application of the residual strength degradation model to carbon-epoxy composite" in Materials Science, 44, no. 3 (2008):446-450,
https://doi.org/10.1007/s11003-008-9094-y . .

TY  - JOUR
AU  - Milović, Ljubica
AU  - Vuherer, Tomaž
AU  - Zrilić, Milorad
AU  - Sedmak, Aleksandar
AU  - Putić, Slaviša
PY  - 2008
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/853
AB  - Global warming leads to research-development attempts worldwide with a view to reduce CO2 emission. Therefore, in the energy supply sector, a special focus has been directed to further development of steels that can endure the ultra-supercritical steam conditions. Our article presents the basic study on weldability of the advanced 9-12% chromium steel applying the thermomechanical simulation of the heat affected zone (HAZ). The changes of microstructures and material properties of HAZ before and after postweld heat treatment (PWHT) have been analyzed and compared by light microscopy, scanning electron microscopy (SEM), hardness measurements, and impact toughness testing. Microstructures at representative points during typical welding cycle and PWHT were studied in details.
PB  - Taylor & Francis Inc, Philadelphia
T2  - Materials and Manufacturing Processes
T1  - Study of the simulated heat affected zone of creep resistant 9-12% advanced chromium steel
EP  - 602
IS  - 6
SP  - 597
VL  - 23
DO  - 10.1080/10426910802160544
ER  - 

@article{
author = "Milović, Ljubica and Vuherer, Tomaž and Zrilić, Milorad and Sedmak, Aleksandar and Putić, Slaviša",
year = "2008",
abstract = "Global warming leads to research-development attempts worldwide with a view to reduce CO2 emission. Therefore, in the energy supply sector, a special focus has been directed to further development of steels that can endure the ultra-supercritical steam conditions. Our article presents the basic study on weldability of the advanced 9-12% chromium steel applying the thermomechanical simulation of the heat affected zone (HAZ). The changes of microstructures and material properties of HAZ before and after postweld heat treatment (PWHT) have been analyzed and compared by light microscopy, scanning electron microscopy (SEM), hardness measurements, and impact toughness testing. Microstructures at representative points during typical welding cycle and PWHT were studied in details.",
publisher = "Taylor & Francis Inc, Philadelphia",
journal = "Materials and Manufacturing Processes",
title = "Study of the simulated heat affected zone of creep resistant 9-12% advanced chromium steel",
pages = "602-597",
number = "6",
volume = "23",
doi = "10.1080/10426910802160544"
}

Milović, L., Vuherer, T., Zrilić, M., Sedmak, A.,& Putić, S.. (2008). Study of the simulated heat affected zone of creep resistant 9-12% advanced chromium steel. in Materials and Manufacturing Processes
Taylor & Francis Inc, Philadelphia., 23(6), 597-602.
https://doi.org/10.1080/10426910802160544

Milović L, Vuherer T, Zrilić M, Sedmak A, Putić S. Study of the simulated heat affected zone of creep resistant 9-12% advanced chromium steel. in Materials and Manufacturing Processes. 2008;23(6):597-602.
doi:10.1080/10426910802160544 .

Milović, Ljubica, Vuherer, Tomaž, Zrilić, Milorad, Sedmak, Aleksandar, Putić, Slaviša, "Study of the simulated heat affected zone of creep resistant 9-12% advanced chromium steel" in Materials and Manufacturing Processes, 23, no. 6 (2008):597-602,
https://doi.org/10.1080/10426910802160544 . .

TY  - JOUR
AU  - Putić, Slaviša
AU  - Stamenović, Marina
AU  - Bajčeta, Branislav B.
AU  - Stajčić, Predrag S.
AU  - Bošnjak, Srđan
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/701
AB  - Cilj ovog rada je da prikaže uticaj visokih i niskih temperatura na udarna svojstva stakleno-epoksidnih kompozita. Udarna jačina prikazana je za četiri različite strukture stakleno−epoksidnih kompozita na tri različite temperature, tj. na sobnoj t=20°C, povišenoj t=+50°C i niskoj temperaturi t=-50°C. Standardno mehaničko testiranje obavljeno je za kompozite sa masama ojačanja 210 g m-2 i 550 g m-2 i orjentacije 0°/90° i ±45°. Mikromehanička analiza oštećenja izvedena je sa ciljem da se odrede realni modeli i mehanizmi loma i uticaja temperature na udarna svojstva.
AB  - The aim of this paper is to present the influence of high and low temperatures on the impact properties glass-epoxy composites. The impact strength an is presented for four different glass-epoxy composite structures at three different temperatures, i.e., at room temperature t=20°C, at an elevated temperature t=+50°C and at a low temperature t=-50°C. Standard mechanical testing was carried out on the composite materials with specific masses of reinforcement of 210 g m-2 and 550 g m-2 and orientations 0°/90° and ±45°. Micromechanical analysis of the failure was performed in order to determine real models and mechanisms of crack and temperature influence on the impact properties. .
PB  - Srpsko hemijsko društvo, Beograd
T2  - Journal of The Serbian Chemical Society
T1  - Uticaj visokih i niskih temperatura na udarna svojstva stakleno−epoksidnih kompozita
T1  - The influence of high and low temperatures on the impact properties of glass-epoxy composites
EP  - 722
IS  - 7
SP  - 713
VL  - 72
DO  - 10.2298/JSC0707713P
ER  - 

@article{
author = "Putić, Slaviša and Stamenović, Marina and Bajčeta, Branislav B. and Stajčić, Predrag S. and Bošnjak, Srđan",
year = "2007",
abstract = "Cilj ovog rada je da prikaže uticaj visokih i niskih temperatura na udarna svojstva stakleno-epoksidnih kompozita. Udarna jačina prikazana je za četiri različite strukture stakleno−epoksidnih kompozita na tri različite temperature, tj. na sobnoj t=20°C, povišenoj t=+50°C i niskoj temperaturi t=-50°C. Standardno mehaničko testiranje obavljeno je za kompozite sa masama ojačanja 210 g m-2 i 550 g m-2 i orjentacije 0°/90° i ±45°. Mikromehanička analiza oštećenja izvedena je sa ciljem da se odrede realni modeli i mehanizmi loma i uticaja temperature na udarna svojstva., The aim of this paper is to present the influence of high and low temperatures on the impact properties glass-epoxy composites. The impact strength an is presented for four different glass-epoxy composite structures at three different temperatures, i.e., at room temperature t=20°C, at an elevated temperature t=+50°C and at a low temperature t=-50°C. Standard mechanical testing was carried out on the composite materials with specific masses of reinforcement of 210 g m-2 and 550 g m-2 and orientations 0°/90° and ±45°. Micromechanical analysis of the failure was performed in order to determine real models and mechanisms of crack and temperature influence on the impact properties. .",
publisher = "Srpsko hemijsko društvo, Beograd",
journal = "Journal of The Serbian Chemical Society",
title = "Uticaj visokih i niskih temperatura na udarna svojstva stakleno−epoksidnih kompozita, The influence of high and low temperatures on the impact properties of glass-epoxy composites",
pages = "722-713",
number = "7",
volume = "72",
doi = "10.2298/JSC0707713P"
}

Putić, S., Stamenović, M., Bajčeta, B. B., Stajčić, P. S.,& Bošnjak, S.. (2007). Uticaj visokih i niskih temperatura na udarna svojstva stakleno−epoksidnih kompozita. in Journal of The Serbian Chemical Society
Srpsko hemijsko društvo, Beograd., 72(7), 713-722.
https://doi.org/10.2298/JSC0707713P

Putić S, Stamenović M, Bajčeta BB, Stajčić PS, Bošnjak S. Uticaj visokih i niskih temperatura na udarna svojstva stakleno−epoksidnih kompozita. in Journal of The Serbian Chemical Society. 2007;72(7):713-722.
doi:10.2298/JSC0707713P .

Putić, Slaviša, Stamenović, Marina, Bajčeta, Branislav B., Stajčić, Predrag S., Bošnjak, Srđan, "Uticaj visokih i niskih temperatura na udarna svojstva stakleno−epoksidnih kompozita" in Journal of The Serbian Chemical Society, 72, no. 7 (2007):713-722,
https://doi.org/10.2298/JSC0707713P . .

TY  - CONF
AU  - Milović, Ljubica
AU  - Sedmak, Aleksandar
AU  - Sedmak, S.
AU  - Putić, Slaviša
AU  - Zrilić, Milorad
PY  - 2007
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/676
AB  - Structural integrity and service reliability depend on the fracture resistance of a material. Cracks in the material are the locations of stress concentration, and elastic-plastic deformation can occur causing the development of mixed-mode type of fracture ahead the crack tip. Crack behavior in the elastic-plastic region is analyzed applying numerical and analytical simulation based on fracture mechanics parameters, characterizing the response of the material at the crack tip. Numerical and analytical results are compared with the corresponding experimental results obtained in previously performed fracture mechanics tests with standard single-edge notch bending SEN(B) specimens. The comparison shows an acceptable level of agreement, enabling application of the proposed numerical model of crack growth in the mixed-mode fracture analysis for structural integrity assessment.
PB  - Trans Tech Publications Ltd
C3  - Materials Science Forum
T1  - Numerical and analytical modeling of elastic-plastic fracture mechanics parameters
EP  - 570
SP  - 565
VL  - 555
DO  - 10.4028/0-87849-441-3.565
ER  - 

@conference{
author = "Milović, Ljubica and Sedmak, Aleksandar and Sedmak, S. and Putić, Slaviša and Zrilić, Milorad",
year = "2007",
abstract = "Structural integrity and service reliability depend on the fracture resistance of a material. Cracks in the material are the locations of stress concentration, and elastic-plastic deformation can occur causing the development of mixed-mode type of fracture ahead the crack tip. Crack behavior in the elastic-plastic region is analyzed applying numerical and analytical simulation based on fracture mechanics parameters, characterizing the response of the material at the crack tip. Numerical and analytical results are compared with the corresponding experimental results obtained in previously performed fracture mechanics tests with standard single-edge notch bending SEN(B) specimens. The comparison shows an acceptable level of agreement, enabling application of the proposed numerical model of crack growth in the mixed-mode fracture analysis for structural integrity assessment.",
publisher = "Trans Tech Publications Ltd",
journal = "Materials Science Forum",
title = "Numerical and analytical modeling of elastic-plastic fracture mechanics parameters",
pages = "570-565",
volume = "555",
doi = "10.4028/0-87849-441-3.565"
}

Milović, L., Sedmak, A., Sedmak, S., Putić, S.,& Zrilić, M.. (2007). Numerical and analytical modeling of elastic-plastic fracture mechanics parameters. in Materials Science Forum
Trans Tech Publications Ltd., 555, 565-570.
https://doi.org/10.4028/0-87849-441-3.565

Milović L, Sedmak A, Sedmak S, Putić S, Zrilić M. Numerical and analytical modeling of elastic-plastic fracture mechanics parameters. in Materials Science Forum. 2007;555:565-570.
doi:10.4028/0-87849-441-3.565 .

Milović, Ljubica, Sedmak, Aleksandar, Sedmak, S., Putić, Slaviša, Zrilić, Milorad, "Numerical and analytical modeling of elastic-plastic fracture mechanics parameters" in Materials Science Forum, 555 (2007):565-570,
https://doi.org/10.4028/0-87849-441-3.565 . .

TY  - JOUR
AU  - Putić, Slaviša
AU  - Stamenović, Marina
AU  - Stajčić, Predrag S.
AU  - Bajčeta, Branislav B.
AU  - Bošnjak, Srđan
PY  - 2006
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/641
AB  - Dominantnost primene cevi izrađenih od kompozita staklena vlakna/epoksi Smola je prisutna u hemijskoj industriji, građevinarstvu, infrastrukturi i ratnoj tehnici. Cevi izrađene za ovu namenu su u eksplotaciji izložene delovanju kako statičkog tako i dinamičkog opterećenja. U zavisnosti od namene, kompozitne cevi, pogotovo u konstrukcijama složenog cevovoda, mogu biti opterećene na uvijanje. U tom slučaju prekoračenje dopuštenih napona prouzrokuje oštećenja koja se ogledaju u uvijanju i pucanju vlakana, pucanju matrice i raslojavanja (delaminacije). U zavisnosti od načina slaganja vlakana javljaju se različiti modeli oštećenja, odnosno pojave prslina. Zbog toga je vrlo važno dati ocenu ponašanja kompozitne cevi izložene uvijanju odnosno ispitivanjem i analizom na prelomnim površinama doći do zaključaka koji su modeli i mehanizmi koji se pri ovom opterećenju javljaju i kako oni utiče na slabljenje konstrukcije, što i jeste predmet i cilj ovog rada.
AB  - Pipes made of composites glass fiber/epoxy resin are predominantly used in the chemical industry, construction, infrastructure and war technique. The pipes made for this purpose are in their use exposed to static and dynamic loading. Depending on the purpose, the pipes, especially those in complex structures, can be loaded by torsion. In that case, exceeding allowed tensions can cause damages such as cracking the fibers and matrix delamination. These damages can lead to the appearance of cracks on the pipes and in many cases to complete breakage of the pipe. Because of this, it is very important to evaluate composite pipes exposed to torsion and find out in which way the construction is weakened, what actually is the main goal of this paper.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta periodica technologica
T1  - Ispitivanje torzionih svojstava i oštećenja staklo/epoksi kompozitnih cevi
T1  - Investigation method of torsional properties and damages of glass/epoxy composite pipes
EP  - 106
IS  - 37
SP  - 97
DO  - 10.2298/APT0637097P
ER  - 

@article{
author = "Putić, Slaviša and Stamenović, Marina and Stajčić, Predrag S. and Bajčeta, Branislav B. and Bošnjak, Srđan",
year = "2006",
abstract = "Dominantnost primene cevi izrađenih od kompozita staklena vlakna/epoksi Smola je prisutna u hemijskoj industriji, građevinarstvu, infrastrukturi i ratnoj tehnici. Cevi izrađene za ovu namenu su u eksplotaciji izložene delovanju kako statičkog tako i dinamičkog opterećenja. U zavisnosti od namene, kompozitne cevi, pogotovo u konstrukcijama složenog cevovoda, mogu biti opterećene na uvijanje. U tom slučaju prekoračenje dopuštenih napona prouzrokuje oštećenja koja se ogledaju u uvijanju i pucanju vlakana, pucanju matrice i raslojavanja (delaminacije). U zavisnosti od načina slaganja vlakana javljaju se različiti modeli oštećenja, odnosno pojave prslina. Zbog toga je vrlo važno dati ocenu ponašanja kompozitne cevi izložene uvijanju odnosno ispitivanjem i analizom na prelomnim površinama doći do zaključaka koji su modeli i mehanizmi koji se pri ovom opterećenju javljaju i kako oni utiče na slabljenje konstrukcije, što i jeste predmet i cilj ovog rada., Pipes made of composites glass fiber/epoxy resin are predominantly used in the chemical industry, construction, infrastructure and war technique. The pipes made for this purpose are in their use exposed to static and dynamic loading. Depending on the purpose, the pipes, especially those in complex structures, can be loaded by torsion. In that case, exceeding allowed tensions can cause damages such as cracking the fibers and matrix delamination. These damages can lead to the appearance of cracks on the pipes and in many cases to complete breakage of the pipe. Because of this, it is very important to evaluate composite pipes exposed to torsion and find out in which way the construction is weakened, what actually is the main goal of this paper.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta periodica technologica",
title = "Ispitivanje torzionih svojstava i oštećenja staklo/epoksi kompozitnih cevi, Investigation method of torsional properties and damages of glass/epoxy composite pipes",
pages = "106-97",
number = "37",
doi = "10.2298/APT0637097P"
}

Putić, S., Stamenović, M., Stajčić, P. S., Bajčeta, B. B.,& Bošnjak, S.. (2006). Ispitivanje torzionih svojstava i oštećenja staklo/epoksi kompozitnih cevi. in Acta periodica technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad.(37), 97-106.
https://doi.org/10.2298/APT0637097P

Putić S, Stamenović M, Stajčić PS, Bajčeta BB, Bošnjak S. Ispitivanje torzionih svojstava i oštećenja staklo/epoksi kompozitnih cevi. in Acta periodica technologica. 2006;(37):97-106.
doi:10.2298/APT0637097P .

Putić, Slaviša, Stamenović, Marina, Stajčić, Predrag S., Bajčeta, Branislav B., Bošnjak, Srđan, "Ispitivanje torzionih svojstava i oštećenja staklo/epoksi kompozitnih cevi" in Acta periodica technologica, no. 37 (2006):97-106,
https://doi.org/10.2298/APT0637097P . .

TY  - JOUR
AU  - Putić, Slaviša
AU  - Rakin, Marko
AU  - Bošnjak, Srđan
AU  - Stajčić, Predrag S.
PY  - 2005
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/503
AB  - Posude pod pritiskom su u eksploataciji izložene nepovoljnim radnim uslovima koji prouzrokuju veoma visoke napone. U okviru ovog rada prikazan je proračun svih elemenata vertikalne cilindrične posude pod pritiskom za skladištenje piva koja se trenutno nalazi u eksploataciji koji mogu uticati na siguran rad i ispitivanje (omotač, danca, ojačanja otvora, prirubnice i prirubnički spojevi). Proračun naponskog stanja je urađen prema odgovarajućim standardima i pravilnicima o posudama pod pritiskom. Dodatak ovakvom proračunu kao i doprinos ovog rada predstavlja proračun primenom metode konačnih elemenata korišćenjem konačnog elementa tipa tanke ljuske. Dobijeni rezultati i njihova analiza omogućavaju sveobuhvatni pristup oceni sigurnosti posude u eksploataciji.
AB  - Pressure vessels during the usage are exposed under very bad working conditions which make very high tension. In this work the calculation of all the elements of vertical cylindrical pressure vessel for the storage of beer which is now in usage can influence safe work and experimenting (cylinder, torispherical heads, holes, blind flanges, cover plates and flanges). Calculation of the tension condition was done according to the standards and rules about the pressure vessels. The addition to this calculation as wall as the contribution of this work is the calculation by the usage of the Finite Element Method by usage of finite element of the thin shell type. The results we got and their analysis allow the whole approach to the mark of safety of pressure vessel in usage.
PB  - Univerzitet u Nišu - Tehnološki fakultet, Leskovac
T2  - Zbornik radova Tehnološkog fakulteta, Leskovac
T1  - Numerička analiza naponskog stanja posude pod pritiskom za skladištenje piva
T1  - Numeric analysis of tension condition of pressure vessel for the storage of beer
EP  - 165
IS  - 15
SP  - 152
UR  - https://hdl.handle.net/21.15107/rcub_technorep_806
ER  - 

@article{
author = "Putić, Slaviša and Rakin, Marko and Bošnjak, Srđan and Stajčić, Predrag S.",
year = "2005",
abstract = "Posude pod pritiskom su u eksploataciji izložene nepovoljnim radnim uslovima koji prouzrokuju veoma visoke napone. U okviru ovog rada prikazan je proračun svih elemenata vertikalne cilindrične posude pod pritiskom za skladištenje piva koja se trenutno nalazi u eksploataciji koji mogu uticati na siguran rad i ispitivanje (omotač, danca, ojačanja otvora, prirubnice i prirubnički spojevi). Proračun naponskog stanja je urađen prema odgovarajućim standardima i pravilnicima o posudama pod pritiskom. Dodatak ovakvom proračunu kao i doprinos ovog rada predstavlja proračun primenom metode konačnih elemenata korišćenjem konačnog elementa tipa tanke ljuske. Dobijeni rezultati i njihova analiza omogućavaju sveobuhvatni pristup oceni sigurnosti posude u eksploataciji., Pressure vessels during the usage are exposed under very bad working conditions which make very high tension. In this work the calculation of all the elements of vertical cylindrical pressure vessel for the storage of beer which is now in usage can influence safe work and experimenting (cylinder, torispherical heads, holes, blind flanges, cover plates and flanges). Calculation of the tension condition was done according to the standards and rules about the pressure vessels. The addition to this calculation as wall as the contribution of this work is the calculation by the usage of the Finite Element Method by usage of finite element of the thin shell type. The results we got and their analysis allow the whole approach to the mark of safety of pressure vessel in usage.",
publisher = "Univerzitet u Nišu - Tehnološki fakultet, Leskovac",
journal = "Zbornik radova Tehnološkog fakulteta, Leskovac",
title = "Numerička analiza naponskog stanja posude pod pritiskom za skladištenje piva, Numeric analysis of tension condition of pressure vessel for the storage of beer",
pages = "165-152",
number = "15",
url = "https://hdl.handle.net/21.15107/rcub_technorep_806"
}

Putić, S., Rakin, M., Bošnjak, S.,& Stajčić, P. S.. (2005). Numerička analiza naponskog stanja posude pod pritiskom za skladištenje piva. in Zbornik radova Tehnološkog fakulteta, Leskovac
Univerzitet u Nišu - Tehnološki fakultet, Leskovac.(15), 152-165.
https://hdl.handle.net/21.15107/rcub_technorep_806

Putić S, Rakin M, Bošnjak S, Stajčić PS. Numerička analiza naponskog stanja posude pod pritiskom za skladištenje piva. in Zbornik radova Tehnološkog fakulteta, Leskovac. 2005;(15):152-165.
https://hdl.handle.net/21.15107/rcub_technorep_806 .

Putić, Slaviša, Rakin, Marko, Bošnjak, Srđan, Stajčić, Predrag S., "Numerička analiza naponskog stanja posude pod pritiskom za skladištenje piva" in Zbornik radova Tehnološkog fakulteta, Leskovac, no. 15 (2005):152-165,
https://hdl.handle.net/21.15107/rcub_technorep_806 .

TY  - JOUR
AU  - Putić, Slaviša
AU  - Stamenović, Marina
AU  - Bajčeta, Branislav B.
AU  - Stajčić, Predrag S.
AU  - Bošnjak, Srđan
PY  - 2005
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/511
AB  - Predmet i cilj ispitivanja prikazanih u ovom radu predstavlja određivanje zatezne čvrstoće (Rm) i modula elastičnosti (EJ staklo-epoksi kompozitnih materijala ispitivanjem na zatezanje na dve različite temperature (t=20°S i t=-50°S). Ispitivanja su izvedena prema standardu na staklo-epoksi kompozitnom materijalu različitih struktura (dve specifične težine ojačanja 210 g/m2H 550 g/m2) i orijentacija ojačanja (0°/90° i ±45°). Doprinos predstavlja i mikromehanička analiza na prelomnim površinama izvedena na stereo i elektronskom mikroskopu kojom se došlo do stvarnih modela nastanka i razvoja oštećenja pri izvedenim ispitivanjima.
AB  - The aim of this paper was to present the determination of tensile strength Rm and modulus of elasticity Et of glass-epoxy composites at two different temperatures (at room temperature t=20°C, and at t =-50°C). Standard mechanical testing was carried out on glass woven-epoxy composite material with different structures (two specific weights of reinforcement, 210 g/m2 and 550 g/m2) and orientations (0°/90° and ±45°). Micromechanical analysis of failure was performed on a stereo microscope and SEM in order to determine real models and mechanisms of crack.
PB  - Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad
T2  - Acta periodica technologica
T1  - Određivanje zateznih svojstava staklo-epoksi kompozitnih materijala na niskim temperaturama
T1  - Low-temperature tension properties of glass-epoxy composite materials
EP  - 134
IS  - 36
SP  - 123
DO  - 10.2298/APT0536123P
ER  - 

@article{
author = "Putić, Slaviša and Stamenović, Marina and Bajčeta, Branislav B. and Stajčić, Predrag S. and Bošnjak, Srđan",
year = "2005",
abstract = "Predmet i cilj ispitivanja prikazanih u ovom radu predstavlja određivanje zatezne čvrstoće (Rm) i modula elastičnosti (EJ staklo-epoksi kompozitnih materijala ispitivanjem na zatezanje na dve različite temperature (t=20°S i t=-50°S). Ispitivanja su izvedena prema standardu na staklo-epoksi kompozitnom materijalu različitih struktura (dve specifične težine ojačanja 210 g/m2H 550 g/m2) i orijentacija ojačanja (0°/90° i ±45°). Doprinos predstavlja i mikromehanička analiza na prelomnim površinama izvedena na stereo i elektronskom mikroskopu kojom se došlo do stvarnih modela nastanka i razvoja oštećenja pri izvedenim ispitivanjima., The aim of this paper was to present the determination of tensile strength Rm and modulus of elasticity Et of glass-epoxy composites at two different temperatures (at room temperature t=20°C, and at t =-50°C). Standard mechanical testing was carried out on glass woven-epoxy composite material with different structures (two specific weights of reinforcement, 210 g/m2 and 550 g/m2) and orientations (0°/90° and ±45°). Micromechanical analysis of failure was performed on a stereo microscope and SEM in order to determine real models and mechanisms of crack.",
publisher = "Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad",
journal = "Acta periodica technologica",
title = "Određivanje zateznih svojstava staklo-epoksi kompozitnih materijala na niskim temperaturama, Low-temperature tension properties of glass-epoxy composite materials",
pages = "134-123",
number = "36",
doi = "10.2298/APT0536123P"
}

Putić, S., Stamenović, M., Bajčeta, B. B., Stajčić, P. S.,& Bošnjak, S.. (2005). Određivanje zateznih svojstava staklo-epoksi kompozitnih materijala na niskim temperaturama. in Acta periodica technologica
Univerzitet u Novom Sadu - Tehnološki fakultet, Novi Sad.(36), 123-134.
https://doi.org/10.2298/APT0536123P

Putić S, Stamenović M, Bajčeta BB, Stajčić PS, Bošnjak S. Određivanje zateznih svojstava staklo-epoksi kompozitnih materijala na niskim temperaturama. in Acta periodica technologica. 2005;(36):123-134.
doi:10.2298/APT0536123P .

Putić, Slaviša, Stamenović, Marina, Bajčeta, Branislav B., Stajčić, Predrag S., Bošnjak, Srđan, "Određivanje zateznih svojstava staklo-epoksi kompozitnih materijala na niskim temperaturama" in Acta periodica technologica, no. 36 (2005):123-134,
https://doi.org/10.2298/APT0536123P . .

TY  - JOUR
AU  - Putić, Slaviša
AU  - Bošnjak, Srđan
AU  - Stamenović, Marina
AU  - Stajčić, Predrag S.
PY  - 2005
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/496
AB  - Mehaničko opterećenje kod posuda pod pritiskom uglavnom potiče od pritiska (unutrašnjeg ili spoljnjeg), kome je posuda izložena. Napon koji se usled ovakvog opterećenja javlja menja se po debljini zida. Zahvaljujući specifičnostima svoje strukture, korišćenjem kompozitnih materijala u izradi posuda pod pritiskom obezbeđuje se niz prednosti kako u oblasti tehnologije izrade, tako i u toku same eksploatacije, u odnosu na neke druge konstruktivne materijale. Njihovo oblikovanje po želji omogućava da se na taj način duž debljine ostvari optimizacija strukture. Predmet i cilj ovog rada predstavlja proračun i prikaz numeričkog modela kojim su se simulirali različiti pritisci, za različite debljine i strukture zida posude od staklo-epoksi kompozitnog materijala. Na taj način se mogu dobiti optimalne strukture za različite radne pritiske kojima posude u eksploataciji mogu biti izložene.
AB  - Mechanical loading of pressure vessels mainly comes from pressure (inner and outer) under which is vessel subjected. Tension which appears changes according to the thickness of the wall. Thanks to the its specific structure, by the usage of composite materials in pressure vessels a lot of advantages are got in the field of technology of making, and during the usage, in comparison to some other constructive materials. Their shaping by the need makes it possible to optimize the structure along the thickness. The subject and aim of this work represents calculation and description of numeric model with which the different cases of the work of inner and outer pressure were simulated, for the different thickness of the wall of the pressure vessel of glass epoxy composite. In that way we come to optimal structure of material for different working pressures under which the vessels can be submitted during the usage.
PB  - Univerzitet u Nišu - Tehnološki fakultet, Leskovac
T2  - Zbornik radova Tehnološkog fakulteta, Leskovac
T1  - Optimizacija strukture laminarnog kompozitnog materijala po debljini zida posude pod pritiskom
T1  - Through thickness optimal design of glass-epoxy composite pressure vessel
EP  - 151
IS  - 15
SP  - 138
UR  - https://hdl.handle.net/21.15107/rcub_technorep_805
ER  - 

@article{
author = "Putić, Slaviša and Bošnjak, Srđan and Stamenović, Marina and Stajčić, Predrag S.",
year = "2005",
abstract = "Mehaničko opterećenje kod posuda pod pritiskom uglavnom potiče od pritiska (unutrašnjeg ili spoljnjeg), kome je posuda izložena. Napon koji se usled ovakvog opterećenja javlja menja se po debljini zida. Zahvaljujući specifičnostima svoje strukture, korišćenjem kompozitnih materijala u izradi posuda pod pritiskom obezbeđuje se niz prednosti kako u oblasti tehnologije izrade, tako i u toku same eksploatacije, u odnosu na neke druge konstruktivne materijale. Njihovo oblikovanje po želji omogućava da se na taj način duž debljine ostvari optimizacija strukture. Predmet i cilj ovog rada predstavlja proračun i prikaz numeričkog modela kojim su se simulirali različiti pritisci, za različite debljine i strukture zida posude od staklo-epoksi kompozitnog materijala. Na taj način se mogu dobiti optimalne strukture za različite radne pritiske kojima posude u eksploataciji mogu biti izložene., Mechanical loading of pressure vessels mainly comes from pressure (inner and outer) under which is vessel subjected. Tension which appears changes according to the thickness of the wall. Thanks to the its specific structure, by the usage of composite materials in pressure vessels a lot of advantages are got in the field of technology of making, and during the usage, in comparison to some other constructive materials. Their shaping by the need makes it possible to optimize the structure along the thickness. The subject and aim of this work represents calculation and description of numeric model with which the different cases of the work of inner and outer pressure were simulated, for the different thickness of the wall of the pressure vessel of glass epoxy composite. In that way we come to optimal structure of material for different working pressures under which the vessels can be submitted during the usage.",
publisher = "Univerzitet u Nišu - Tehnološki fakultet, Leskovac",
journal = "Zbornik radova Tehnološkog fakulteta, Leskovac",
title = "Optimizacija strukture laminarnog kompozitnog materijala po debljini zida posude pod pritiskom, Through thickness optimal design of glass-epoxy composite pressure vessel",
pages = "151-138",
number = "15",
url = "https://hdl.handle.net/21.15107/rcub_technorep_805"
}

Putić, S., Bošnjak, S., Stamenović, M.,& Stajčić, P. S.. (2005). Optimizacija strukture laminarnog kompozitnog materijala po debljini zida posude pod pritiskom. in Zbornik radova Tehnološkog fakulteta, Leskovac
Univerzitet u Nišu - Tehnološki fakultet, Leskovac.(15), 138-151.
https://hdl.handle.net/21.15107/rcub_technorep_805

Putić S, Bošnjak S, Stamenović M, Stajčić PS. Optimizacija strukture laminarnog kompozitnog materijala po debljini zida posude pod pritiskom. in Zbornik radova Tehnološkog fakulteta, Leskovac. 2005;(15):138-151.
https://hdl.handle.net/21.15107/rcub_technorep_805 .

Putić, Slaviša, Bošnjak, Srđan, Stamenović, Marina, Stajčić, Predrag S., "Optimizacija strukture laminarnog kompozitnog materijala po debljini zida posude pod pritiskom" in Zbornik radova Tehnološkog fakulteta, Leskovac, no. 15 (2005):138-151,
https://hdl.handle.net/21.15107/rcub_technorep_805 .

TY  - JOUR
AU  - Rakin, Marko
AU  - Cvijović, Z
AU  - Grabulov, Vencislav
AU  - Putić, Slaviša
AU  - Sedmak, Aleksandar
PY  - 2004
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/453
AB  - In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture-void nucleation-has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determination of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J-integral values corresponding to onset of crack growth, J(i), are in good agreement with experimental result and both models have proved to be suitable for determination of the ductile fracture initiation in tested steel. The effect of FE size at a crack tip on J(i)-value has been particularly analysed: it has been established that the calculation with FE size corresponding to the mean free path), between inclusions in steel gives results that are in accordance with the experimental ones.
PB  - Pergamon-Elsevier Science Ltd, Oxford
T2  - Engineering Fracture Mechanics
T1  - Prediction of ductile fracture initiation using micromechanical analysis
EP  - 827
IS  - 4-6
SP  - 813
VL  - 71
DO  - 10.1016/S0013-7944(03)00013-4
ER  - 

@article{
author = "Rakin, Marko and Cvijović, Z and Grabulov, Vencislav and Putić, Slaviša and Sedmak, Aleksandar",
year = "2004",
abstract = "In the paper ductile fracture initiation analysis of low-alloyed ferritic steel has been made by application of two micromechanical models: the Rice-Tracey void growth model and the Gurson-Tvergaard-Needleman (GTN) model. The aim of the study was to analyse transferability of micromechanical parameters determined on specimens without initial crack to pre-cracked specimens. A significant part of the research has been carried out through participation in the round robin project organised by the European Structural Integrity Society (ESIS). Tensile tests have been performed on cylindrical smooth specimens and CT specimens. Critical values of micromechanical parameters determined on smooth specimen for both applied models, have been used for prediction of the crack growth initiation in CT specimen. Modelling of the first phase of ductile fracture-void nucleation-has been carried out using quantitative metallographic analysis of non-metallic inclusion content in tested steel. For determination of critical values of model parameters corresponding to ductile fracture initiation a simple procedure has been applied based on a combination of experimental and numerical results. Evaluated J-integral values corresponding to onset of crack growth, J(i), are in good agreement with experimental result and both models have proved to be suitable for determination of the ductile fracture initiation in tested steel. The effect of FE size at a crack tip on J(i)-value has been particularly analysed: it has been established that the calculation with FE size corresponding to the mean free path), between inclusions in steel gives results that are in accordance with the experimental ones.",
publisher = "Pergamon-Elsevier Science Ltd, Oxford",
journal = "Engineering Fracture Mechanics",
title = "Prediction of ductile fracture initiation using micromechanical analysis",
pages = "827-813",
number = "4-6",
volume = "71",
doi = "10.1016/S0013-7944(03)00013-4"
}

Rakin, M., Cvijović, Z., Grabulov, V., Putić, S.,& Sedmak, A.. (2004). Prediction of ductile fracture initiation using micromechanical analysis. in Engineering Fracture Mechanics
Pergamon-Elsevier Science Ltd, Oxford., 71(4-6), 813-827.
https://doi.org/10.1016/S0013-7944(03)00013-4

Rakin M, Cvijović Z, Grabulov V, Putić S, Sedmak A. Prediction of ductile fracture initiation using micromechanical analysis. in Engineering Fracture Mechanics. 2004;71(4-6):813-827.
doi:10.1016/S0013-7944(03)00013-4 .

Rakin, Marko, Cvijović, Z, Grabulov, Vencislav, Putić, Slaviša, Sedmak, Aleksandar, "Prediction of ductile fracture initiation using micromechanical analysis" in Engineering Fracture Mechanics, 71, no. 4-6 (2004):813-827,
https://doi.org/10.1016/S0013-7944(03)00013-4 . .

TY  - JOUR
AU  - Rakin, Marko
AU  - Sedmak, Aleksandar
AU  - Zrilić, Milorad
AU  - Putić, Slaviša
AU  - Sedmak, Stojan
PY  - 2003
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/355
AB  - U izradi posuda pod pritiskom u znatnoj meri se koriste niskolegirani čelici koji treba da imaju odgovarajuće vrednosti čvrstoće, žilavosti, sposobnosti oblikovanja i zavarljivosti. U radu je analiziran nastanak prsline u niskolegiranom feritnom čeliku (Rp0.2 ≈475 MPa, Rm ≈620 MPa) primenom mikromehaničkog pristupa za žilav lom, gde se kritične vrednosti parametara otkaza materijala određuju kombinovanim eksperimentalno-numeričkim postupkom. Vrednosti parametara modela koje su određene na jednostavnim uzorcima za karakterizaciju materijala, uspešno su korišćene u predviđanju početka stabilnog rasta prsline na geometriji sa početnom prslinom. Time je ostvarena tzv. "prenosivost" mikromehaničkih parametara modela i potvrđena njihova nezavisnost od geometrije, što ima praktičan značaj u analizi integriteta konstrukcija na kojima su otkrivene prsline.
AB  - Pressure vessels are often made of low-alloyed steel that should be characterized by proper values of strenght, toughness, formability and weldability. In this paper the crack initiation in low-alloyed ferritic steel (Rp0.2 ≈ 475 MPa, Rm ≈620 MPa) has been analyzed using micromechanical approach to ductile fracture, where the critical values for material failure are determined by combining both experimental and numerical procedure. The values of the model parameters determined on simple specimens for the material characterization have been successfully used for predicting the onset of stable crack growth on precracked geometry. In that way so-called "transferability" of the micromechanical parameters has been established and their geometry-independence has been confirmed, which is of practical significance for the analysis of integrity of structure with initial cracks.
PB  - Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Beograd
T2  - Procesna tehnika
T1  - Analiza nastanka i početka stabilnog rasta prsline u niskolegiranom čeliku za posude pod pritiskom
T1  - An analysis of occurrence and beginning of stable crack growth in the low-alloyed steel for pressure vessels
EP  - 81
IS  - 1
SP  - 78
VL  - 19
UR  - https://hdl.handle.net/21.15107/rcub_machinery_355
ER  - 

@article{
author = "Rakin, Marko and Sedmak, Aleksandar and Zrilić, Milorad and Putić, Slaviša and Sedmak, Stojan",
year = "2003",
abstract = "U izradi posuda pod pritiskom u znatnoj meri se koriste niskolegirani čelici koji treba da imaju odgovarajuće vrednosti čvrstoće, žilavosti, sposobnosti oblikovanja i zavarljivosti. U radu je analiziran nastanak prsline u niskolegiranom feritnom čeliku (Rp0.2 ≈475 MPa, Rm ≈620 MPa) primenom mikromehaničkog pristupa za žilav lom, gde se kritične vrednosti parametara otkaza materijala određuju kombinovanim eksperimentalno-numeričkim postupkom. Vrednosti parametara modela koje su određene na jednostavnim uzorcima za karakterizaciju materijala, uspešno su korišćene u predviđanju početka stabilnog rasta prsline na geometriji sa početnom prslinom. Time je ostvarena tzv. "prenosivost" mikromehaničkih parametara modela i potvrđena njihova nezavisnost od geometrije, što ima praktičan značaj u analizi integriteta konstrukcija na kojima su otkrivene prsline., Pressure vessels are often made of low-alloyed steel that should be characterized by proper values of strenght, toughness, formability and weldability. In this paper the crack initiation in low-alloyed ferritic steel (Rp0.2 ≈ 475 MPa, Rm ≈620 MPa) has been analyzed using micromechanical approach to ductile fracture, where the critical values for material failure are determined by combining both experimental and numerical procedure. The values of the model parameters determined on simple specimens for the material characterization have been successfully used for predicting the onset of stable crack growth on precracked geometry. In that way so-called "transferability" of the micromechanical parameters has been established and their geometry-independence has been confirmed, which is of practical significance for the analysis of integrity of structure with initial cracks.",
publisher = "Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Beograd",
journal = "Procesna tehnika",
title = "Analiza nastanka i početka stabilnog rasta prsline u niskolegiranom čeliku za posude pod pritiskom, An analysis of occurrence and beginning of stable crack growth in the low-alloyed steel for pressure vessels",
pages = "81-78",
number = "1",
volume = "19",
url = "https://hdl.handle.net/21.15107/rcub_machinery_355"
}

Rakin, M., Sedmak, A., Zrilić, M., Putić, S.,& Sedmak, S.. (2003). Analiza nastanka i početka stabilnog rasta prsline u niskolegiranom čeliku za posude pod pritiskom. in Procesna tehnika
Savez mašinskih i elektrotehničkih inženjera i tehničara Srbije (SMEITS), Beograd., 19(1), 78-81.
https://hdl.handle.net/21.15107/rcub_machinery_355

Rakin M, Sedmak A, Zrilić M, Putić S, Sedmak S. Analiza nastanka i početka stabilnog rasta prsline u niskolegiranom čeliku za posude pod pritiskom. in Procesna tehnika. 2003;19(1):78-81.
https://hdl.handle.net/21.15107/rcub_machinery_355 .

Rakin, Marko, Sedmak, Aleksandar, Zrilić, Milorad, Putić, Slaviša, Sedmak, Stojan, "Analiza nastanka i početka stabilnog rasta prsline u niskolegiranom čeliku za posude pod pritiskom" in Procesna tehnika, 19, no. 1 (2003):78-81,
https://hdl.handle.net/21.15107/rcub_machinery_355 .

TY  - JOUR
AU  - Uskoković, Petar S.
AU  - Balać, Igor
AU  - Brajović, L
AU  - Simić, M
AU  - Putić, Slaviša
AU  - Aleksić, R
PY  - 2001
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/219
PB  - Wiley-VCH Verlag
T2  - Advanced Engineering Materials
T1  - Delamination detection in woven composite laminates with embedded optical fibers
EP  - 496
IS  - 7
SP  - 492
VL  - 3
UR  - https://hdl.handle.net/21.15107/rcub_machinery_219
ER  - 

@article{
author = "Uskoković, Petar S. and Balać, Igor and Brajović, L and Simić, M and Putić, Slaviša and Aleksić, R",
year = "2001",
publisher = "Wiley-VCH Verlag",
journal = "Advanced Engineering Materials",
title = "Delamination detection in woven composite laminates with embedded optical fibers",
pages = "496-492",
number = "7",
volume = "3",
url = "https://hdl.handle.net/21.15107/rcub_machinery_219"
}

Uskoković, P. S., Balać, I., Brajović, L., Simić, M., Putić, S.,& Aleksić, R.. (2001). Delamination detection in woven composite laminates with embedded optical fibers. in Advanced Engineering Materials
Wiley-VCH Verlag., 3(7), 492-496.
https://hdl.handle.net/21.15107/rcub_machinery_219

Uskoković PS, Balać I, Brajović L, Simić M, Putić S, Aleksić R. Delamination detection in woven composite laminates with embedded optical fibers. in Advanced Engineering Materials. 2001;3(7):492-496.
https://hdl.handle.net/21.15107/rcub_machinery_219 .

Uskoković, Petar S., Balać, Igor, Brajović, L, Simić, M, Putić, Slaviša, Aleksić, R, "Delamination detection in woven composite laminates with embedded optical fibers" in Advanced Engineering Materials, 3, no. 7 (2001):492-496,
https://hdl.handle.net/21.15107/rcub_machinery_219 .

TY  - JOUR
AU  - Uskoković, Petar S.
AU  - Balać, Igor
AU  - Rakin, Marko
AU  - Putić, Slaviša
AU  - Srećković, Milesa
AU  - Aleksić, R
PY  - 2000
UR  - https://machinery.mas.bg.ac.rs/handle/123456789/201
AB  - A typical intensity-modulated optical fiber sensor system consists of a light source, a sensing device, within which the intensity of light is altered by the measurand in some way, a detector to measure the intensity of the transmitted signal and optical fibers to carry light between these components. The optical fiber coating interaction with the host material plays a major role in determining the proper transfer of load from the structure to the optical fiber. Three-dimensional (3D) finite element (FE) model of the structure was performed to study and predict the behaviour of the stress/strain fields in and around acrylate coated embedded optical fibers in flexural test coupons of carbon fiber composite. The modeling results and the fracture surface scanning electron micrographs suggest that the soft acrylate coating is debonding.
PB  - Trans Tech Publications Ltd, Bach
T2  - Trends in Advanced Materials and Processes
T1  - Stress field analysis in composite laminates with embedded optical fiber
EP  - 182
SP  - 177
VL  - 352
DO  - 10.4028/www.scientific.net/MSF.352.177
ER  - 

@article{
author = "Uskoković, Petar S. and Balać, Igor and Rakin, Marko and Putić, Slaviša and Srećković, Milesa and Aleksić, R",
year = "2000",
abstract = "A typical intensity-modulated optical fiber sensor system consists of a light source, a sensing device, within which the intensity of light is altered by the measurand in some way, a detector to measure the intensity of the transmitted signal and optical fibers to carry light between these components. The optical fiber coating interaction with the host material plays a major role in determining the proper transfer of load from the structure to the optical fiber. Three-dimensional (3D) finite element (FE) model of the structure was performed to study and predict the behaviour of the stress/strain fields in and around acrylate coated embedded optical fibers in flexural test coupons of carbon fiber composite. The modeling results and the fracture surface scanning electron micrographs suggest that the soft acrylate coating is debonding.",
publisher = "Trans Tech Publications Ltd, Bach",
journal = "Trends in Advanced Materials and Processes",
title = "Stress field analysis in composite laminates with embedded optical fiber",
pages = "182-177",
volume = "352",
doi = "10.4028/www.scientific.net/MSF.352.177"
}

Uskoković, P. S., Balać, I., Rakin, M., Putić, S., Srećković, M.,& Aleksić, R.. (2000). Stress field analysis in composite laminates with embedded optical fiber. in Trends in Advanced Materials and Processes
Trans Tech Publications Ltd, Bach., 352, 177-182.
https://doi.org/10.4028/www.scientific.net/MSF.352.177

Uskoković PS, Balać I, Rakin M, Putić S, Srećković M, Aleksić R. Stress field analysis in composite laminates with embedded optical fiber. in Trends in Advanced Materials and Processes. 2000;352:177-182.
doi:10.4028/www.scientific.net/MSF.352.177 .

Uskoković, Petar S., Balać, Igor, Rakin, Marko, Putić, Slaviša, Srećković, Milesa, Aleksić, R, "Stress field analysis in composite laminates with embedded optical fiber" in Trends in Advanced Materials and Processes, 352 (2000):177-182,
https://doi.org/10.4028/www.scientific.net/MSF.352.177 . .