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Stability of the face layer of sandwich beams with sub-interface damage in the foam core
KTH, School of Engineering Sciences (SCI), Aeronautical and Vehicle Engineering.
2007 (English)In: Composite structures, ISSN 0263-8223, E-ISSN 1879-1085, Vol. 78, no 4, 507-518 p.Article in journal (Refereed) Published
Abstract [en]

This paper addresses the effect of local indentation/impact damage on the bearing capacity of foam core sandwich beams subjected to edgewise compression. The considered damage is in a form of through-width zone of crushed core accompanied by a residual dent in the face sheet. It is shown that such damage causes a significant reduction of compressive strength and stiffness of sandwich beams. Analytical solutions estimating the Euler's local buckling load are obtained for two typical modes of damage. These solutions are validated through experimental investigation of three sandwich configurations. The results of the analytical analysis are in agreement with the experimental data.

Place, publisher, year, edition, pages
2007. Vol. 78, no 4, 507-518 p.
Keyword [en]
sandwich structure, indentation, low-velocity impact, local damage, crushed foam core, residual dent, local buckling, Euler's load
National Category
Engineering and Technology
Identifiers
URN: urn:nbn:se:kth:diva-37054DOI: 10.1016/j.compstruct.2005.11.012ISI: 000245774900006Scopus ID: 2-s2.0-33751551213OAI: oai:DiVA.org:kth-37054DiVA: diva2:431920
Available from: 2011-07-27 Created: 2011-07-27 Last updated: 2017-12-08Bibliographically approved

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