Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers
Abstract
The possibility of applying optical fibers as sensors for investigation of real time low energy impact damage in laminar thermoplastic composite materials has been studied. For that purpose intensity based optical fibers were embedded in composite material specimens. Kevlar 129 (DuPont's registered trade-mark for poly (p-phenylene terephthalamide)) woven fabric was used as reinforcement. Impact toughness testing by the Charpy impact pendulum was conducted in order to investigate low energy impacts. Transient intensity of optical signal during the impact, were compared with material crack initiation energy and crack propagation energy. Following this approach, development of damage in material was monitored. Obtained results show that intensity based optical fibers could be used as detectors for material damage appearance, and also, for level evaluation of its degradation caused by low energy impacts.
Keywords:
damage monitoring / intensity-based fiber optic sensors / thermoplastic composite materialsSource:
Materials Science Forum, 2005, 494, 481-486Publisher:
- 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes
DOI: 10.4028/0-87849-971-7.481
ISSN: 0255-5476
PubMed:
WoS: 000230985800079
Scopus: 2-s2.0-33745793965
Institution/Community
Tehnološko-metalurški fakultetTY - JOUR AU - Kojović, Aleksandar AU - Živković, Irena AU - Brajović, Ljiljana AU - Mitraković, Dragan AU - Aleksić, Radoslav PY - 2005 UR - http://TechnoRep.tmf.bg.ac.rs/handle/123456789/722 AB - The possibility of applying optical fibers as sensors for investigation of real time low energy impact damage in laminar thermoplastic composite materials has been studied. For that purpose intensity based optical fibers were embedded in composite material specimens. Kevlar 129 (DuPont's registered trade-mark for poly (p-phenylene terephthalamide)) woven fabric was used as reinforcement. Impact toughness testing by the Charpy impact pendulum was conducted in order to investigate low energy impacts. Transient intensity of optical signal during the impact, were compared with material crack initiation energy and crack propagation energy. Following this approach, development of damage in material was monitored. Obtained results show that intensity based optical fibers could be used as detectors for material damage appearance, and also, for level evaluation of its degradation caused by low energy impacts. PB - 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes T2 - Materials Science Forum T1 - Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers EP - 486 SP - 481 VL - 494 DO - 10.4028/0-87849-971-7.481 ER -
@article{ author = "Kojović, Aleksandar and Živković, Irena and Brajović, Ljiljana and Mitraković, Dragan and Aleksić, Radoslav", year = "2005", abstract = "The possibility of applying optical fibers as sensors for investigation of real time low energy impact damage in laminar thermoplastic composite materials has been studied. For that purpose intensity based optical fibers were embedded in composite material specimens. Kevlar 129 (DuPont's registered trade-mark for poly (p-phenylene terephthalamide)) woven fabric was used as reinforcement. Impact toughness testing by the Charpy impact pendulum was conducted in order to investigate low energy impacts. Transient intensity of optical signal during the impact, were compared with material crack initiation energy and crack propagation energy. Following this approach, development of damage in material was monitored. Obtained results show that intensity based optical fibers could be used as detectors for material damage appearance, and also, for level evaluation of its degradation caused by low energy impacts.", publisher = "6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes", journal = "Materials Science Forum", title = "Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers", pages = "486-481", volume = "494", doi = "10.4028/0-87849-971-7.481" }
Kojović, A., Živković, I., Brajović, L., Mitraković, D.,& Aleksić, R.. (2005). Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers. in Materials Science Forum 6th Conference of the Yugoslav Materials Research Society, YUCOMAT VI: Current Research in Advanced Materials and Processes., 494, 481-486. https://doi.org/10.4028/0-87849-971-7.481
Kojović A, Živković I, Brajović L, Mitraković D, Aleksić R. Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers. in Materials Science Forum. 2005;494:481-486. doi:10.4028/0-87849-971-7.481 .
Kojović, Aleksandar, Živković, Irena, Brajović, Ljiljana, Mitraković, Dragan, Aleksić, Radoslav, "Low energy impact damage detection in laminar termoplastic composite materials by means of embedded optical fibers" in Materials Science Forum, 494 (2005):481-486, https://doi.org/10.4028/0-87849-971-7.481 . .