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Mechanical Behaviour of Cellular Solids and Their Sandwich Panels under Impact Loading

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Abstract:

This paper presents a experimental study of the strength enhancement under impact loading of metallic cellular materials as well as sandwich panels with cellular core. A testing method using 60mm diameter Nylon Hopkinson pressure bars is used to investigate the rate sensitivity of various metallic cellular materials as honeycombs, foams. Finally, an inversed perforation test on sandwich panels with an instrumented pressure bar is also presented. Such a new testing setup provides piercing force time history measurement, generally inaccessible. Testing results show a notable enhancement of piercing forces, even though the skin aluminum plates and the foam cores are nearly rate insensitive.

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Periodical:

Key Engineering Materials (Volumes 345-346)

Pages:

1137-1140

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.345-346.1137

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Cite this paper

Online since:

August 2007

Authors:

Han Zhao, I. Nasri, Hui Jian Li

Keywords:

Foam, Honeycomb, Hopkinson Bar, Impact, Perforation, Sandwich, Strain Rate

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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