TY  - JOUR
AU  - Petrović, Miloš
AU  - Mihailović, Pedja
AU  - Brajović, Ljiljana
AU  - Petricević, Slobodan
AU  - Živković, Irena
AU  - Kojović, Aleksandar
AU  - Radojević, Vesna
PY  - 2016
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/796
AB  - In this paper, the use of intrinsic intensity fiber-optic sensors for structural health monitoring was investigated. Polyethylene-based composite samples with glass mat reinforcement and embedded telecommunication fibers were subjected to impact using high-speed puncture impact tester as a calibration device. Transfer function of the sensor was generated by linking the light intensity modulation depth with the impact force and the impact point to fiber distance. Conditions for transfer function validity were presented. To detect any possible dangerous impact, a net of crossed fibers was proposed and the net spacing for the given material was calculated. Appropriate non-damaging calibration procedure was proposed, as well as the algorithm for locating the impact point. The method for calculating the impact force, the projectile momentum change, and the place of impact was verified by consecutive strikes on the previously calibrated sample. The sensor can also provide information on the time of the impact and an alarm signal if the force exceeds the damaging threshold force.
PB  - Institute of Electrical and Electronics Engineers Inc.
T2  - Ieee Sensors Journal
T1  - Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester
EP  - 3053
IS  - 9
SP  - 3047
VL  - 16
DO  - 10.1109/JSEN.2016.2524045
ER  - 

@article{
author = "Petrović, Miloš and Mihailović, Pedja and Brajović, Ljiljana and Petricević, Slobodan and Živković, Irena and Kojović, Aleksandar and Radojević, Vesna",
year = "2016",
abstract = "In this paper, the use of intrinsic intensity fiber-optic sensors for structural health monitoring was investigated. Polyethylene-based composite samples with glass mat reinforcement and embedded telecommunication fibers were subjected to impact using high-speed puncture impact tester as a calibration device. Transfer function of the sensor was generated by linking the light intensity modulation depth with the impact force and the impact point to fiber distance. Conditions for transfer function validity were presented. To detect any possible dangerous impact, a net of crossed fibers was proposed and the net spacing for the given material was calculated. Appropriate non-damaging calibration procedure was proposed, as well as the algorithm for locating the impact point. The method for calculating the impact force, the projectile momentum change, and the place of impact was verified by consecutive strikes on the previously calibrated sample. The sensor can also provide information on the time of the impact and an alarm signal if the force exceeds the damaging threshold force.",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
journal = "Ieee Sensors Journal",
title = "Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester",
pages = "3053-3047",
number = "9",
volume = "16",
doi = "10.1109/JSEN.2016.2524045"
}

Petrović, M., Mihailović, P., Brajović, L., Petricević, S., Živković, I., Kojović, A.,& Radojević, V.. (2016). Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester. in Ieee Sensors Journal
Institute of Electrical and Electronics Engineers Inc.., 16(9), 3047-3053.
https://doi.org/10.1109/JSEN.2016.2524045

Petrović M, Mihailović P, Brajović L, Petricević S, Živković I, Kojović A, Radojević V. Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester. in Ieee Sensors Journal. 2016;16(9):3047-3053.
doi:10.1109/JSEN.2016.2524045 .

Petrović, Miloš, Mihailović, Pedja, Brajović, Ljiljana, Petricević, Slobodan, Živković, Irena, Kojović, Aleksandar, Radojević, Vesna, "Intensity Fiber-Optic Sensor for Structural Health Monitoring Calibrated by Impact Tester" in Ieee Sensors Journal, 16, no. 9 (2016):3047-3053,
https://doi.org/10.1109/JSEN.2016.2524045 . .

TY  - JOUR
AU  - El Swie, H.
AU  - Radojević, Vesna
AU  - Brajović, Ljiljana
AU  - Stajic-Trosić, J.
AU  - Cosović, V.
AU  - Grujić, A.
AU  - Aleksić, Radoslav
PY  - 2015
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/706
AB  - The commercial multi-mode optical fiber was coated with magnetic composite material prepared using Nd-Fe-B permanent magnet powder dispersed in poly (ethylene-co-vinyl acetate)-EVA. Characterization of microstructure, thermal stability and mechanical properties of the composite coatings with different Nd-Fe-B powder content were performed using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and standard tensile tester, respectively. Experimental results show that composites with higher content of Nd-Fe-B powder have improved thermal and mechanical properties. Propagation characteristics of the constructed optical fiber magnetic sensing element (OFMSE) in the external magnetic field were investigated in relation to quality and composition of the applied composite coatings. The attenuation of optical signal with applied external magnetic field intensity was monitored and the results suggest that the sample with 50 wt-% of Nd-Fe-B provides the greatest sensitivity of the sensor element.
T2  - Digest Journal of Nanomaterials and Biostructures
T1  - Synthesis and performance of polymer based magnetic composite sensing element
EP  - 1483
IS  - 4
SP  - 1475
VL  - 10
UR  - https://hdl.handle.net/21.15107/rcub_grafar_706
ER  - 

@article{
author = "El Swie, H. and Radojević, Vesna and Brajović, Ljiljana and Stajic-Trosić, J. and Cosović, V. and Grujić, A. and Aleksić, Radoslav",
year = "2015",
abstract = "The commercial multi-mode optical fiber was coated with magnetic composite material prepared using Nd-Fe-B permanent magnet powder dispersed in poly (ethylene-co-vinyl acetate)-EVA. Characterization of microstructure, thermal stability and mechanical properties of the composite coatings with different Nd-Fe-B powder content were performed using Scanning Electron Microscope (SEM), Differential Scanning Calorimetry (DSC), and standard tensile tester, respectively. Experimental results show that composites with higher content of Nd-Fe-B powder have improved thermal and mechanical properties. Propagation characteristics of the constructed optical fiber magnetic sensing element (OFMSE) in the external magnetic field were investigated in relation to quality and composition of the applied composite coatings. The attenuation of optical signal with applied external magnetic field intensity was monitored and the results suggest that the sample with 50 wt-% of Nd-Fe-B provides the greatest sensitivity of the sensor element.",
journal = "Digest Journal of Nanomaterials and Biostructures",
title = "Synthesis and performance of polymer based magnetic composite sensing element",
pages = "1483-1475",
number = "4",
volume = "10",
url = "https://hdl.handle.net/21.15107/rcub_grafar_706"
}

El Swie, H., Radojević, V., Brajović, L., Stajic-Trosić, J., Cosović, V., Grujić, A.,& Aleksić, R.. (2015). Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures, 10(4), 1475-1483.
https://hdl.handle.net/21.15107/rcub_grafar_706

El Swie H, Radojević V, Brajović L, Stajic-Trosić J, Cosović V, Grujić A, Aleksić R. Synthesis and performance of polymer based magnetic composite sensing element. in Digest Journal of Nanomaterials and Biostructures. 2015;10(4):1475-1483.
https://hdl.handle.net/21.15107/rcub_grafar_706 .

El Swie, H., Radojević, Vesna, Brajović, Ljiljana, Stajic-Trosić, J., Cosović, V., Grujić, A., Aleksić, Radoslav, "Synthesis and performance of polymer based magnetic composite sensing element" in Digest Journal of Nanomaterials and Biostructures, 10, no. 4 (2015):1475-1483,
https://hdl.handle.net/21.15107/rcub_grafar_706 .

TY  - CONF
AU  - Petojević, Zorana
AU  - Radojević, Vesna
AU  - Petronijević, M.
PY  - 2014
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/1145
PB  - Univerzitet Crne Gore, Građevinski fakultet, Podgorica
C3  - Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa
T1  - Energy efficiency of buildings in Serbia and the application of infrared thermography in buildings
T1  - Energetska efikasnost zgrada u Srbiji i primena infracrvene termografije u zgradarstvu
UR  - https://hdl.handle.net/21.15107/rcub_grafar_1145
ER  - 

@conference{
author = "Petojević, Zorana and Radojević, Vesna and Petronijević, M.",
year = "2014",
publisher = "Univerzitet Crne Gore, Građevinski fakultet, Podgorica",
journal = "Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa",
title = "Energy efficiency of buildings in Serbia and the application of infrared thermography in buildings, Energetska efikasnost zgrada u Srbiji i primena infracrvene termografije u zgradarstvu",
url = "https://hdl.handle.net/21.15107/rcub_grafar_1145"
}

Petojević, Z., Radojević, V.,& Petronijević, M.. (2014). Energy efficiency of buildings in Serbia and the application of infrared thermography in buildings. in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa
Univerzitet Crne Gore, Građevinski fakultet, Podgorica..
https://hdl.handle.net/21.15107/rcub_grafar_1145

Petojević Z, Radojević V, Petronijević M. Energy efficiency of buildings in Serbia and the application of infrared thermography in buildings. in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa. 2014;.
https://hdl.handle.net/21.15107/rcub_grafar_1145 .

Petojević, Zorana, Radojević, Vesna, Petronijević, M., "Energy efficiency of buildings in Serbia and the application of infrared thermography in buildings" in Zbornik radova / Peti Internacionalni naučno-stručni skup Građevinarstvo nauka i praksa (2014),
https://hdl.handle.net/21.15107/rcub_grafar_1145 .

TY  - JOUR
AU  - Radojević, Vesna
AU  - Serbez, T.
AU  - Aleksić, Radoslav
AU  - Nedeljković, D.
AU  - Brajović, Ljiljana
PY  - 2005
UR  - https://grafar.grf.bg.ac.rs/handle/123456789/96
AB  - Multi-mode optical fiber with magnetic composite coating was investigated as an optical fiber sensor element (OFMSE) for magnetic field sensing The composite coating was formed with dispersions of permanent magnet powder of Nd-Fe-B in poly (ethylene-co-vinyl acetate)-EVA solutions in toluene. The influence of the applied external magnetic field on the change of intensity of the light signal propagate trough developed optical fibers sensor element was investigated. In this paper the influence of the content of magnetic powder in the composite coating on the optical propagation characteristics of optical fiber were particularly investigated.
PB  - Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd
T2  - Journal of Mining and Metallurgy B: Metallurgy
T1  - The influence of concentration of Nd-Fe-B powder in composite coating of optical fiber to the sensibility to external magnetic field
EP  - 111
IS  - 1
SP  - 103
VL  - 41
DO  - 10.2298/JMMB0501103R
ER  - 

@article{
author = "Radojević, Vesna and Serbez, T. and Aleksić, Radoslav and Nedeljković, D. and Brajović, Ljiljana",
year = "2005",
abstract = "Multi-mode optical fiber with magnetic composite coating was investigated as an optical fiber sensor element (OFMSE) for magnetic field sensing The composite coating was formed with dispersions of permanent magnet powder of Nd-Fe-B in poly (ethylene-co-vinyl acetate)-EVA solutions in toluene. The influence of the applied external magnetic field on the change of intensity of the light signal propagate trough developed optical fibers sensor element was investigated. In this paper the influence of the content of magnetic powder in the composite coating on the optical propagation characteristics of optical fiber were particularly investigated.",
publisher = "Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd",
journal = "Journal of Mining and Metallurgy B: Metallurgy",
title = "The influence of concentration of Nd-Fe-B powder in composite coating of optical fiber to the sensibility to external magnetic field",
pages = "111-103",
number = "1",
volume = "41",
doi = "10.2298/JMMB0501103R"
}

Radojević, V., Serbez, T., Aleksić, R., Nedeljković, D.,& Brajović, L.. (2005). The influence of concentration of Nd-Fe-B powder in composite coating of optical fiber to the sensibility to external magnetic field. in Journal of Mining and Metallurgy B: Metallurgy
Univerzitet u Beogradu - Tehnički fakultet u Boru, Beograd., 41(1), 103-111.
https://doi.org/10.2298/JMMB0501103R

Radojević V, Serbez T, Aleksić R, Nedeljković D, Brajović L. The influence of concentration of Nd-Fe-B powder in composite coating of optical fiber to the sensibility to external magnetic field. in Journal of Mining and Metallurgy B: Metallurgy. 2005;41(1):103-111.
doi:10.2298/JMMB0501103R .

Radojević, Vesna, Serbez, T., Aleksić, Radoslav, Nedeljković, D., Brajović, Ljiljana, "The influence of concentration of Nd-Fe-B powder in composite coating of optical fiber to the sensibility to external magnetic field" in Journal of Mining and Metallurgy B: Metallurgy, 41, no. 1 (2005):103-111,
https://doi.org/10.2298/JMMB0501103R . .