Strain and damage sensing in carbon fiber polymer-matrix composite by electrical resistance measurement

Pandis, C; Georgoussis, G; Peoglos, V; Kyritsis, A; Pissis, P; Georgiopoulos, P; Kontou, E

dc.contributor.author	Pandis, C	en
dc.contributor.author	Georgoussis, G	en
dc.contributor.author	Peoglos, V	en
dc.contributor.author	Kyritsis, A	en
dc.contributor.author	Pissis, P	en
dc.contributor.author	Georgiopoulos, P	en
dc.contributor.author	Kontou, E	en
dc.date.accessioned	2014-03-01T02:54:01Z
dc.date.available	2014-03-01T02:54:01Z
dc.date.issued	2012	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36545
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84856655831&partnerID=40&md5=567d3dbfb7676221bf8a0d1960cde331	en
dc.subject.other	Carbon fiber polymer-matrix composite	en
dc.subject.other	Carbon fiber reinforced polymer	en
dc.subject.other	Cyclic loadings	en
dc.subject.other	Damage sensing	en
dc.subject.other	Electrical resistance measurement	en
dc.subject.other	Electrical resistances	en
dc.subject.other	Electrode configurations	en
dc.subject.other	Fiber direction	en
dc.subject.other	Fixed current	en
dc.subject.other	Longitudinal deformation	en
dc.subject.other	Longitudinal strain	en
dc.subject.other	Mechanical tests	en
dc.subject.other	Non-destructive technique	en
dc.subject.other	Noncontact measurements	en
dc.subject.other	Sputtered electrodes	en
dc.subject.other	Stress levels	en
dc.subject.other	Tensile loading	en
dc.subject.other	Voltage drop	en
dc.subject.other	Carbon fibers	en
dc.subject.other	Electric resistance	en
dc.subject.other	Ethers	en
dc.subject.other	Ketones	en
dc.subject.other	Organic compounds	en
dc.subject.other	Polymer matrix composites	en
dc.subject.other	Strain	en
dc.subject.other	Nondestructive examination	en
dc.title	Strain and damage sensing in carbon fiber polymer-matrix composite by electrical resistance measurement	en
heal.type	conferenceItem	en
heal.publicationDate	2012	en
heal.abstract	The measurement of electrical resistance appears to be a valuable non-destructive technique that can be used to monitor the damage in carbon fiber reinforced polymers. In this work composites of poly-ether-ether-ketone (PEEK) with unidirectional carbon fibers at a content of 38wt% were tested. The samples were subjected to tensile loading in parallel to the fiber direction and the longitudinal strain was measured very accurately, with a laser-extensometer which permits a non-contact measurement of the longitudinal deformation distribution of the sample. Simultaneously with the mechanical tests, electrical resistance of the specimen was monitored with the use of gold sputtered electrodes on its surface. Different electrode configurations were used in order to measure longitudinal, through thickness or oblique resistance. In all cases, a fixed current was applied and the resulting voltage drop was continuously monitored. The resistivity increased monotonically with strain in all configurations where voltage drop is measured in the direction of current application. Furthermore, resistance changed irreversibly during tensile cyclic loading at various stress levels. © 2012 Taylor & Francis Group, London.	en
heal.journalName	Emerging Technologies in Non-Destructive Testing V - Proceedings of the 5th Conference on Emerging Technologies in NDT	en
dc.identifier.spage	367	en
dc.identifier.epage	372	en