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A comparative evaluation of crashworthy composite sandwich structures

Lookup NU author(s): Dr Joe Carruthers, Professor Mark RobinsonORCiD

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Abstract

This paper describes an experimental evaluation of the energy absorption properties of a series of novel designs for cost-effective crashworthy composite sandwich structures. All the designs are based on the concept of the "tied-core" sandwich, i.e. the use of additional core reinforcements that act to tie the opposing facings of a sandwich together, thus preventing catastrophic failure under edgewise loading. The design, manufacture and crush testing of hollow rectangular tubes fabricated from six different tied-core concepts is described. Factors that are shown to promote high energy absorption include large, continuous areas of contact between the facings and the ties, non-thin sandwich facings, strong corners reinforced with continuous hoop fibres, and the use of an appropriate collapse trigger mechanism. © 2005 Elsevier Ltd. All rights reserved.

Publication metadata

Author(s): Pitarresi G, Carruthers JJ, Robinson AM, Torre G, Kenny JM, Ingleton S, Velecela O, Found MS

Publication type: Article

Publication status: Published

Journal: Composite Structures

Year: 2007

Volume: 78

Issue: 1

Pages: 34-44

Print publication date: 01/03/2007

ISSN (print): 0263-8223

ISSN (electronic): 1879-1085

Publisher: Elsevier

URL: http://dx.doi.org/10.1016/j.compstruct.2005.08.008

DOI: 10.1016/j.compstruct.2005.08.008

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