Experimental investigation of strain rate effects on the crushing characteristics of composite sandwich panels

Mamalis, AG; Papapostolou, DP

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Papapostolou, DP	en
dc.date.accessioned	2014-03-01T01:33:28Z
dc.date.available	2014-03-01T01:33:28Z
dc.date.issued	2010	en
dc.identifier.issn	1358-8265	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/20436
dc.subject	composite sandwich panels	en
dc.subject	crashworthiness	en
dc.subject	edgewise compression	en
dc.subject	FRP	en
dc.subject	impact testing	en
dc.subject	PMI foam	en
dc.subject	PVC foam	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	Composite sandwich panels	en
dc.subject.other	Edgewise compression	en
dc.subject.other	FRP	en
dc.subject.other	PMI foam	en
dc.subject.other	PVC foam	en
dc.subject.other	Absorption	en
dc.subject.other	Chlorine compounds	en
dc.subject.other	Compression testing	en
dc.subject.other	Crashworthiness	en
dc.subject.other	Crushing	en
dc.subject.other	Energy absorption	en
dc.subject.other	Foams	en
dc.subject.other	Glass fibers	en
dc.subject.other	Honeycomb structures	en
dc.subject.other	Impact testing	en
dc.subject.other	Plastic laminates	en
dc.subject.other	Polyvinyl chlorides	en
dc.subject.other	Quality assurance	en
dc.subject.other	Sandwich structures	en
dc.subject.other	Strain rate	en
dc.title	Experimental investigation of strain rate effects on the crushing characteristics of composite sandwich panels	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/13588265.2010.484191	en
heal.identifier.secondary	http://dx.doi.org/10.1080/13588265.2010.484191	en
heal.language	English	en
heal.publicationDate	2010	en
heal.abstract	In the present work, the influence of strain rate on the collapse modes, the crushing mechanisms and the energy absorption characteristics of four types of composite sandwich panels was investigated in a series of impact and static in-plane tests. The tested sandwich specimens were formed combining two types of glass fibre reinforced plastic (FRP) faceplate laminates with three types of polymer foam core (poly-methacryl-imide (PMI) foam and two grades of cross-linked poly-vinyl chloride (PVC) foam) in four different material combinations. Three modes of collapse were observed in the series of impact and static compression tests, but only one of them - which was observed only at higher strain rates - was a stable mode featuring progressive end-crushing of the sandwich panel and significant crash energy absorption. The analysis of the test results showed that the increase of the strain rate influenced significantly the mode of collapse of the tested sandwich panels and some of their energy absorption characteristics such as the critical load for failure initiation and the peak collapse load. Apart from the strain rate effects, the analysis of the test works focused on the mechanics of progressive deformation and crushing related to each mode of collapse and the influence of significant parameters of the sandwich panel construction - such as the properties of the foam core and the faceplates - on the overall crushing response and the energy absorption characteristics. © 2010 Taylor & Francis.	en
heal.publisher	TAYLOR & FRANCIS LTD	en
heal.journalName	International Journal of Crashworthiness	en
dc.identifier.doi	10.1080/13588265.2010.484191	en
dc.identifier.isi	ISI:000285355300002	en
dc.identifier.volume	15	en
dc.identifier.issue	6	en
dc.identifier.spage	581	en
dc.identifier.epage	603	en