Numerical investigation of the optimum placement locations of optical Fiber Bragg Grating sensors for the health monitoring of bonded composite repairs

Tsamasphyros, G; Kanderakis, GN; Vrettos, C; Kalkanis, K

dc.contributor.author	Tsamasphyros, G	en
dc.contributor.author	Kanderakis, GN	en
dc.contributor.author	Vrettos, C	en
dc.contributor.author	Kalkanis, K	en
dc.date.accessioned	2014-03-01T02:44:52Z
dc.date.available	2014-03-01T02:44:52Z
dc.date.issued	2007	en
dc.identifier.issn	10221360	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/31983
dc.subject	Adhesive debonding	en
dc.subject	Bonded composite repair	en
dc.subject	FEA	en
dc.subject	Fiber bragg gratings sensors	en
dc.subject	Structural health monitoring	en
dc.subject.other	Bond strength (materials)	en
dc.subject.other	Composite materials	en
dc.subject.other	Computer simulation	en
dc.subject.other	Elasticity	en
dc.subject.other	Fiber Bragg gratings	en
dc.subject.other	Structural health monitoring	en
dc.subject.other	Adhesive debonding	en
dc.subject.other	Bonded composite repairs	en
dc.subject.other	Fiber bragg gratings sensors	en
dc.subject.other	Fiber optic sensors	en
dc.title	Numerical investigation of the optimum placement locations of optical Fiber Bragg Grating sensors for the health monitoring of bonded composite repairs	en
heal.type	conferenceItem	en
heal.identifier.primary	10.1002/masy.200750125	en
heal.identifier.secondary	http://dx.doi.org/10.1002/masy.200750125	en
heal.publicationDate	2007	en
heal.abstract	the use of optical Fiber Bragg Grating sensors (FBG) embedded into composite laminates has proven to be an efficient way for the monitoring of the strain field inside composite laminates. The current work focuses on the use of such sensors for structural health monitoring of bonded composite repairs, often used in the aerospace as well as in the maritime industry. In such applications, the embedding location of the FBG sensors is of great importance, since apart from general strain measurements of the composite, they provide the ability of detecting whether a crack has propagated in the metal or a debonding has occurred between the metal and the composite. Within the current work, a representative case of bonded composite repair of a cracked metallic structure is examined and a series of 3D elasticity linear static finite element models are developed. Various crack lengths and patch disbond sizes have been studied while varying strain distributions were recorded along numerous paths inside the structure. Having recorded and analyzed these strain distributions, certain guidelines have been derived concerning the optimum FBG placement inside the patch, in order to ensure efficient structural health monitoring. Copyright © 2007 WILEY-VCH Verlag GmbH & Co. KGaA.	en
heal.journalName	Macromolecular Symposia	en
dc.identifier.doi	10.1002/masy.200750125	en
dc.identifier.volume	247	en
dc.identifier.spage	221	en
dc.identifier.epage	229	en