Experimental investigation of the collapse modes and the main crushing characteristics of composite sandwich panels subjected to flexural loading

Mamalis, AG; Spentzas, KN; Manolakos, DE; Ioannidis, MB; Papapostolou, DP

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Spentzas, KN	en
dc.contributor.author	Manolakos, DE	en
dc.contributor.author	Ioannidis, MB	en
dc.contributor.author	Papapostolou, DP	en
dc.date.accessioned	2014-03-01T01:28:22Z
dc.date.available	2014-03-01T01:28:22Z
dc.date.issued	2008	en
dc.identifier.issn	1358-8265	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/18824
dc.subject	composites	en
dc.subject	sandwich panels	en
dc.subject	flexural loading	en
dc.subject	cellular foam	en
dc.subject	crashworthiness	en
dc.subject	energy-absorbing capacity	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	FOAM CORE	en
dc.subject.other	COMPRESSION	en
dc.subject.other	MECHANISMS	en
dc.subject.other	BEAMS	en
dc.subject.other	FACES	en
dc.title	Experimental investigation of the collapse modes and the main crushing characteristics of composite sandwich panels subjected to flexural loading	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/13588260801933691	en
heal.identifier.secondary	http://dx.doi.org/10.1080/13588260801933691	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The flexural properties, collapse modes and crushing characteristics of various types of composite sandwich panels - that were candidate materials for the manufacture of the front-end bumper of transportation vehicles - were investigated in a series of three-point bending tests that were performed in accordance with the American Society for Testing and Materials International Standard D790. The tested hybrid composites were constructed trying four types of polymer foam core (more specifically polymethacrylimide foam, cross-linked and linear polyvinyl chloride foam and polyurethane foam) and two types of fibreglass reinforced polyester faceplate laminates made of glass fibre reinforcements impregnated in modified acrylic resin, in eight different material combinations. Two modes of collapse were recorded in the series of flexural tests: the first was foam core shear failure and the second was local indentation collapse mode. The influence of the most important material properties of the faceplate laminates and foam core and the sandwich construction geometry on the flexural response and the crushing characteristics of the tested sandwich panels such as the peak load, crash energy absorption and collapse modes is extensively analysed. Particular attention is paid to the analysis of the mechanics of progressive deformation and crumpling of the sandwich panels in each of the collapse modes emphasising the mechanisms related to the crash energy absorption during the bending of the sandwich panels.	en
heal.publisher	TAYLOR & FRANCIS LTD	en
heal.journalName	INTERNATIONAL JOURNAL OF CRASHWORTHINESS	en
dc.identifier.doi	10.1080/13588260801933691	en
dc.identifier.isi	ISI:000257472900001	en
dc.identifier.volume	13	en
dc.identifier.issue	4	en
dc.identifier.spage	349	en
dc.identifier.epage	362	en