TY  - CONF
AU  - Radović, Ivan M.
AU  - Stajčić, Aleksandar
AU  - Mitić, Vojislav V.
AU  - Serpa, C.
AU  - Paunović, V.
AU  - Ranđelović, Branislav
PY  - 2021
UR  - https://dais.sanu.ac.rs/123456789/12361
AB  - In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension.
PB  - Institute of Electrical and Electronics Engineers Inc.
C3  - 32nd IEEE International Conference on Microelectronics, MIEL 2021
T1  - Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure
SP  - 203
EP  - 206
DO  - 10.1109/MIEL52794.2021.9569054
UR  - https://hdl.handle.net/21.15107/rcub_dais_12361
ER  - 

@conference{
author = "Radović, Ivan M. and Stajčić, Aleksandar and Mitić, Vojislav V. and Serpa, C. and Paunović, V. and Ranđelović, Branislav",
year = "2021",
abstract = "In the past century, the use of polymers and composites with a polymer matrix has expanded to such a level that today it is impossible to imagine life without these materials. Epoxy resin and epoxy-based composites are widely used as construction materials, due to their excellent adhesion, thermal and chemical stability. Fractal nature analysis can provide insight in morphological changes at fiber-matrix interface level, which could give direction for the processing of composites. This mathematical technique can be performed on field emission scanning electron microscopy (FESEM) images, by identifying fiber phase and pores shapes and boundaries, as well as fiber-matrix bonding at the interface. In this study, fiberglass mat was used for the reinforcement of epoxy. FESEM image of enlarged fiber after the composite fracture was used for the reconstruction of data. With the use of affine fractal regression model, software Fractal Real Finder was employed for the reconstruction of fiber shape and the determination of Hausdorff dimension.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "32nd IEEE International Conference on Microelectronics, MIEL 2021",
title = "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure",
pages = "203-206",
doi = "10.1109/MIEL52794.2021.9569054",
url = "https://hdl.handle.net/21.15107/rcub_dais_12361"
}

Radović, I. M., Stajčić, A., Mitić, V. V., Serpa, C., Paunović, V.,& Ranđelović, B.. (2021). Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in 32nd IEEE International Conference on Microelectronics, MIEL 2021
Institute of Electrical and Electronics Engineers Inc.., 203-206.
https://doi.org/10.1109/MIEL52794.2021.9569054
https://hdl.handle.net/21.15107/rcub_dais_12361

Radović IM, Stajčić A, Mitić VV, Serpa C, Paunović V, Ranđelović B. Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure. in 32nd IEEE International Conference on Microelectronics, MIEL 2021. 2021;:203-206.
doi:10.1109/MIEL52794.2021.9569054
https://hdl.handle.net/21.15107/rcub_dais_12361 .

Radović, Ivan M., Stajčić, Aleksandar, Mitić, Vojislav V., Serpa, C., Paunović, V., Ranđelović, Branislav, "Fractal Reconstruction of Fiber-reinforced Epoxy Microstructure" in 32nd IEEE International Conference on Microelectronics, MIEL 2021 (2021):203-206,
https://doi.org/10.1109/MIEL52794.2021.9569054 .,
https://hdl.handle.net/21.15107/rcub_dais_12361 .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Pavlović, Vera P.
AU  - Obradović, Nina
AU  - Paunović, V.
AU  - Maca, Karel
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://www.sciencedirect.com/science/article/pii/S0925838817301408
UR  - https://dais.sanu.ac.rs/123456789/4691
AB  - In the present study the effect of preparation conditions on microstructure and electrical properties of MgTiO3 ceramics was investigated. Mixture of MgO and TiO2 powders was subjected to mechanical activation for different time periods. Two types of sintering (two-step and HIP sintering) were performed on green bodies prepared by cold isostatic pressing. AC impedance spectroscopy in the low-frequency range (from 20 Hz to 1 MHz), at room and elevated temperatures, were performed in order to separate contribution of grains and grain boundaries to capacitance, resistance and conductivity of magnesium titanate ceramics. The special attention was directed to explanation of the influence of mechanical activation on electrical and morphological changes in sintered samples. The significant decrease of partial oxygen pressure in HP sintering atmosphere caused the change from insulating behavior of MgTiO3 samples after two-step sintering to semiconducting one.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - The impedance analysis of sintered MgTiO3 ceramics
SP  - 107
EP  - 115
VL  - 701
DO  - 10.1016/j.jallcom.2017.01.117
UR  - https://hdl.handle.net/21.15107/rcub_dais_4691
ER  - 

@article{
author = "Filipović, Suzana and Pavlović, Vera P. and Obradović, Nina and Paunović, V. and Maca, Karel and Pavlović, Vladimir B.",
year = "2017",
abstract = "In the present study the effect of preparation conditions on microstructure and electrical properties of MgTiO3 ceramics was investigated. Mixture of MgO and TiO2 powders was subjected to mechanical activation for different time periods. Two types of sintering (two-step and HIP sintering) were performed on green bodies prepared by cold isostatic pressing. AC impedance spectroscopy in the low-frequency range (from 20 Hz to 1 MHz), at room and elevated temperatures, were performed in order to separate contribution of grains and grain boundaries to capacitance, resistance and conductivity of magnesium titanate ceramics. The special attention was directed to explanation of the influence of mechanical activation on electrical and morphological changes in sintered samples. The significant decrease of partial oxygen pressure in HP sintering atmosphere caused the change from insulating behavior of MgTiO3 samples after two-step sintering to semiconducting one.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "The impedance analysis of sintered MgTiO3 ceramics",
pages = "107-115",
volume = "701",
doi = "10.1016/j.jallcom.2017.01.117",
url = "https://hdl.handle.net/21.15107/rcub_dais_4691"
}

Filipović, S., Pavlović, V. P., Obradović, N., Paunović, V., Maca, K.,& Pavlović, V. B.. (2017). The impedance analysis of sintered MgTiO3 ceramics. in Journal of Alloys and Compounds
Elsevier., 701, 107-115.
https://doi.org/10.1016/j.jallcom.2017.01.117
https://hdl.handle.net/21.15107/rcub_dais_4691

Filipović S, Pavlović VP, Obradović N, Paunović V, Maca K, Pavlović VB. The impedance analysis of sintered MgTiO3 ceramics. in Journal of Alloys and Compounds. 2017;701:107-115.
doi:10.1016/j.jallcom.2017.01.117
https://hdl.handle.net/21.15107/rcub_dais_4691 .

Filipović, Suzana, Pavlović, Vera P., Obradović, Nina, Paunović, V., Maca, Karel, Pavlović, Vladimir B., "The impedance analysis of sintered MgTiO3 ceramics" in Journal of Alloys and Compounds, 701 (2017):107-115,
https://doi.org/10.1016/j.jallcom.2017.01.117 .,
https://hdl.handle.net/21.15107/rcub_dais_4691 .

TY  - JOUR
AU  - Filipović, Suzana
AU  - Pavlović, Vera P.
AU  - Obradović, Nina
AU  - Paunović, V.
AU  - Maca, Karel
AU  - Pavlović, Vladimir B.
PY  - 2017
UR  - http://www.sciencedirect.com/science/article/pii/S0925838817301408
UR  - https://dais.sanu.ac.rs/123456789/4705
AB  - In the present study the effect of preparation conditions on microstructure and electrical properties of MgTiO3 ceramics was investigated. Mixture of MgO and TiO2 powders was subjected to mechanical activation for different time periods. Two types of sintering (two-step and HIP sintering) were performed on green bodies prepared by cold isostatic pressing. AC impedance spectroscopy in the low-frequency range (from 20 Hz to 1 MHz), at room and elevated temperatures, were performed in order to separate contribution of grains and grain boundaries to capacitance, resistance and conductivity of magnesium titanate ceramics. The special attention was directed to explanation of the influence of mechanical activation on electrical and morphological changes in sintered samples. The significant decrease of partial oxygen pressure in HP sintering atmosphere caused the change from insulating behavior of MgTiO3 samples after two-step sintering to semiconducting one.
PB  - Elsevier
T2  - Journal of Alloys and Compounds
T1  - The impedance analysis of sintered MgTiO3 ceramics
SP  - 107
EP  - 115
VL  - 701
DO  - 10.1016/j.jallcom.2017.01.117
UR  - https://hdl.handle.net/21.15107/rcub_dais_4705
ER  - 

@article{
author = "Filipović, Suzana and Pavlović, Vera P. and Obradović, Nina and Paunović, V. and Maca, Karel and Pavlović, Vladimir B.",
year = "2017",
abstract = "In the present study the effect of preparation conditions on microstructure and electrical properties of MgTiO3 ceramics was investigated. Mixture of MgO and TiO2 powders was subjected to mechanical activation for different time periods. Two types of sintering (two-step and HIP sintering) were performed on green bodies prepared by cold isostatic pressing. AC impedance spectroscopy in the low-frequency range (from 20 Hz to 1 MHz), at room and elevated temperatures, were performed in order to separate contribution of grains and grain boundaries to capacitance, resistance and conductivity of magnesium titanate ceramics. The special attention was directed to explanation of the influence of mechanical activation on electrical and morphological changes in sintered samples. The significant decrease of partial oxygen pressure in HP sintering atmosphere caused the change from insulating behavior of MgTiO3 samples after two-step sintering to semiconducting one.",
publisher = "Elsevier",
journal = "Journal of Alloys and Compounds",
title = "The impedance analysis of sintered MgTiO3 ceramics",
pages = "107-115",
volume = "701",
doi = "10.1016/j.jallcom.2017.01.117",
url = "https://hdl.handle.net/21.15107/rcub_dais_4705"
}

Filipović, S., Pavlović, V. P., Obradović, N., Paunović, V., Maca, K.,& Pavlović, V. B.. (2017). The impedance analysis of sintered MgTiO3 ceramics. in Journal of Alloys and Compounds
Elsevier., 701, 107-115.
https://doi.org/10.1016/j.jallcom.2017.01.117
https://hdl.handle.net/21.15107/rcub_dais_4705

Filipović S, Pavlović VP, Obradović N, Paunović V, Maca K, Pavlović VB. The impedance analysis of sintered MgTiO3 ceramics. in Journal of Alloys and Compounds. 2017;701:107-115.
doi:10.1016/j.jallcom.2017.01.117
https://hdl.handle.net/21.15107/rcub_dais_4705 .

Filipović, Suzana, Pavlović, Vera P., Obradović, Nina, Paunović, V., Maca, Karel, Pavlović, Vladimir B., "The impedance analysis of sintered MgTiO3 ceramics" in Journal of Alloys and Compounds, 701 (2017):107-115,
https://doi.org/10.1016/j.jallcom.2017.01.117 .,
https://hdl.handle.net/21.15107/rcub_dais_4705 .