Electrical resistance measurement for in situ health monitoring of carbon nanotube/polymer composites

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	2014-03-01T02:53:37Z
dc.date.available	2014-03-01T02:53:37Z
dc.date.issued	2012	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/36454
dc.relation.uri	http://www.scopus.com/inward/record.url?eid=2-s2.0-84856656216&partnerID=40&md5=e80bc3a870e50a8e94aa82272fdf05d3	en
dc.subject.other	Conductive networks	en
dc.subject.other	Cyclic loadings	en
dc.subject.other	Damage sensing	en
dc.subject.other	Electrical contacts	en
dc.subject.other	Electrical noise	en
dc.subject.other	Electrical resistance change	en
dc.subject.other	Electrical resistance measurement	en
dc.subject.other	Electrical resistances	en
dc.subject.other	Fixed current	en
dc.subject.other	Four-probe methods	en
dc.subject.other	Health monitoring	en
dc.subject.other	In-situ	en
dc.subject.other	Inner-electrodes	en
dc.subject.other	Longitudinal strain	en
dc.subject.other	Percolation thresholds	en
dc.subject.other	Tensile loading	en
dc.subject.other	Carbon nanotubes	en
dc.subject.other	Electric resistance	en
dc.subject.other	Nanocomposites	en
dc.subject.other	Nondestructive examination	en
dc.subject.other	Percolation (computer storage)	en
dc.subject.other	Percolation (fluids)	en
dc.subject.other	Percolation (solid state)	en
dc.subject.other	Strain	en
dc.subject.other	Electric variables measurement	en
dc.title	Electrical resistance measurement for in situ health monitoring of carbon nanotube/polymer composites	en
heal.type	conferenceItem	en
heal.publicationDate	2012	en
heal.abstract	In this work multiwall carbon nanotubes (MWCNTs) dispersed in a polymer matrix have been used for damage sensing of the resulting nanocomposite under tensile and cyclic loading. This was achieved by measuring the electrical resistance change in conductive polypropylene/CNT nanocomposites with 4% and 8% wt MWCNT content well above the percolation threshold. The samples were subjected to tensile loading and the longitudinal strain was measured together with the longitudinal electrical resistance. For the electrical resistance measurements a four-probe method was used by applying a fixed current through the two outer electrical contacts and measuring the voltage between the two inner electrodes. By lowering CNT content (being above the percolation threshold) the relative change of resistance ΔR/Ro as a result of applying the same stress has been found to increase but there is a trade-off with the electrical noise of the measurements. The increase of electrical resistance with strain could be explained as a result of destruction of percolating paths forming the conducting network. The results showed that CNT dispersed in a polymer matrix forming a conductive network have a potential to be used as a sensitive network to monitor or predict the damage in polymer/carbon nanotube nanocomposites. © 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	361	en
dc.identifier.epage	366	en