Structural and impact behaviour of an innovative low-cost sandwich panel

Mamalis, AG; Spentzas, KN; Manolakos, DE; Pantelelis, N; Ioannidis, M

dc.contributor.author	Mamalis, AG	en
dc.contributor.author	Spentzas, KN	en
dc.contributor.author	Manolakos, DE	en
dc.contributor.author	Pantelelis, N	en
dc.contributor.author	Ioannidis, M	en
dc.date.accessioned	2014-03-01T01:29:14Z
dc.date.available	2014-03-01T01:29:14Z
dc.date.issued	2008	en
dc.identifier.issn	1358-8265	en
dc.identifier.uri	https://dspace.lib.ntua.gr/xmlui/handle/123456789/19178
dc.subject	composites	en
dc.subject	sandwich panels	en
dc.subject	metal skin	en
dc.subject	flexural loading	en
dc.subject	impact performance	en
dc.subject.classification	Engineering, Manufacturing	en
dc.subject.classification	Engineering, Mechanical	en
dc.subject.other	COLLAPSE MECHANISMS	en
dc.subject.other	COMPOSITE FACES	en
dc.subject.other	FOAM CORE	en
dc.subject.other	BEAMS	en
dc.title	Structural and impact behaviour of an innovative low-cost sandwich panel	en
heal.type	journalArticle	en
heal.identifier.primary	10.1080/13588260701788559	en
heal.identifier.secondary	http://dx.doi.org/10.1080/13588260701788559	en
heal.language	English	en
heal.publicationDate	2008	en
heal.abstract	The classic sandwich structure consists of two thin and stiff face sheets and a thick, lightweight and stiff enough material in between. Although this structure seems optimal, in practice the large differences between the structural properties of the materials in contact create many problems. Moreover, the cost of the existing core materials is very high, pushing towards the selection of the cheap cores. Of course, the final selection of the core material is a compromise between the cost, the weight and also other characteristics of the core such as the impact resistance, fatigue, moisture, etc. To improve the efficiency of the sandwich structures, two innovations are proposed: firstly to use metal skins instead of composite ones and to introduce an intermediate layer between the outer skins and the foam core. This layer should be much stiffer than the core material, lightweight enough and preferably thicker than the face sheet. This intermediate layer allows for the use of very thin face sheets, e.g. metals, and very cheap cores, e.g. polystyrene or polyurethane foams. Furthermore, if a common material is used for the intermediate layer, e.g. wood, the cost will also decrease considerably. In this paper the structural behaviour of this new sandwich concept, together with its impact behaviour, has been studied on the basis of tests performed with impactors dropped from 3.6 m producing impact energy up to 36 J.	en
heal.publisher	TAYLOR & FRANCIS LTD	en
heal.journalName	INTERNATIONAL JOURNAL OF CRASHWORTHINESS	en
dc.identifier.doi	10.1080/13588260701788559	en
dc.identifier.isi	ISI:000255689400001	en
dc.identifier.volume	13	en
dc.identifier.issue	3	en
dc.identifier.spage	231	en
dc.identifier.epage	236	en