Computational analysis and optimization for smart patching repairs

Tsamasphyros, GJ; Furnarakis, NK; Kanderakis, GN; Marioli-Riga, ZP

dc.contributor.author	Tsamasphyros, GJ	en
dc.contributor.author	Furnarakis, NK	en
dc.contributor.author	Kanderakis, GN	en
dc.contributor.author	Marioli-Riga, ZP	en
dc.date.accessioned	2014-03-01T01:18:47Z
dc.date.available	2014-03-01T01:18:47Z
dc.date.issued	2003	en
dc.identifier.issn	0929-189X	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/15195
dc.subject	Composite patch	en
dc.subject	Embedded optical fibers	en
dc.subject	Laminated patch	en
dc.subject	Smart patching repairs	en
dc.subject.classification	Materials Science, Composites	en
dc.subject.other	Aluminum sheet	en
dc.subject.other	Bonding	en
dc.subject.other	Computer simulation	en
dc.subject.other	Cracks	en
dc.subject.other	Finite element method	en
dc.subject.other	Mechanical properties	en
dc.subject.other	Optical fibers	en
dc.subject.other	Optical sensors	en
dc.subject.other	Optimization	en
dc.subject.other	Repair	en
dc.subject.other	Resins	en
dc.subject.other	Structural loads	en
dc.subject.other	Composite patch	en
dc.subject.other	Embedded optical repairs	en
dc.subject.other	Laminated patch	en
dc.subject.other	Optical fiber sensors	en
dc.subject.other	Smart patching repairs	en
dc.subject.other	Strain field	en
dc.subject.other	Metallic matrix composites	en
dc.title	Computational analysis and optimization for smart patching repairs	en
heal.type	journalArticle	en
heal.identifier.primary	10.1023/A:1023916304551	en
heal.identifier.secondary	http://dx.doi.org/10.1023/A:1023916304551	en
heal.language	English	en
heal.publicationDate	2003	en
heal.abstract	A classical cracked metallic structure, repaired with a 'smart' bonded composite patch with embedded optical fibers ( to detect the strain field variations of the loaded structure), has been studied here-in. Finite element analysis was used, where-in the composite patch was modeled as a layered structure with three-dimensional elements constituting six different laminae. Each lamina is assumed to have different mechanical properties, according to the studied case, in order to simulate different stacking sequence. A resin rich 'eye' pocket has also been modeled in order to simulate the exact form of resin area produced during the manufacturing process. The patch is bonded over a cracked aluminum sheet through a small adhesive layer placed in between. External loads were applied only on the metal structure, as in a real repair case. The primary loading axis of the metal was assumed to be parallel to the direction of the optical fibers. Due to the different nature of the materials that form the composite patch, complex mechanical interactions between the fibers and the surrounding material occur, resulting in a complicated strain field along the optical fiber sensor. This affects the structural integrity of both the patch and the repair. Different optical fiber layer positions were considered, to study their effect on the resulting strain field and the structural integrity of the patch. Analysis concluded that the best available embedding position of an optical fiber in a laminated patch coincides to the one predicted as neutral surface, according to Rose's analytical equations.	en
heal.publisher	KLUWER ACADEMIC PUBL	en
heal.journalName	Applied Composite Materials	en
dc.identifier.doi	10.1023/A:1023916304551	en
dc.identifier.isi	ISI:000183113200002	en
dc.identifier.volume	10	en
dc.identifier.issue	3	en
dc.identifier.spage	141	en
dc.identifier.epage	148	en