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Residual dent in locally loaded foam core sandwich structures: Analysis and use for NDI
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
2008 (English)In: Composites Science And Technology, ISSN 0266-3538, E-ISSN 1879-1050, Vol. 68, no 1, 57-74 p.Article in journal (Refereed) Published
Abstract [en]

This paper addresses the residual denting in the face sheet and corresponding core damage in a locally loaded flat sandwich structure with foam core. The problem is analytically considered in the context of elastic bending of the face sheet accompanied by non-linear deformation of the crushed foam core. The plane and axisymmetric formulations are studied. The obtained solutions allow for the estimation of the magnitude of the residual face dent through the size of the crushed core zone (or vice versa). Thus, the analytical background is proposed for a non-destructive inspection of locally indented/impacted sandwich structures. The solutions are verified experimentally.

Place, publisher, year, edition, pages
2008. Vol. 68, no 1, 57-74 p.
Keyword [en]
sandwich, crushed foam core, residual dent, non-destructive inspection, damage tolerance
National Category
Vehicle Engineering
Identifiers
URN: urn:nbn:se:kth:diva-36267DOI: 10.1016/j.compscitech.2007.05.036ISI: 000251857100007Scopus ID: 2-s2.0-35448930183OAI: oai:DiVA.org:kth-36267DiVA: diva2:430491
Note
QC 20110711Available from: 2011-07-11 Created: 2011-07-11 Last updated: 2017-12-11Bibliographically approved

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