Strength enhancement of sandwich panel under impact loading

H. Zhao; I. Nasri; H. J. Li

doi:10.1117/12.839374

25 August 2009 Strength enhancement of sandwich panel under impact loading

H. Zhao, I. Nasri, H. J. Li

Proceedings Volume 7375, ICEM 2008: International Conference on Experimental Mechanics 2008; 73756B (2009) https://doi.org/10.1117/12.839374
Event: International Conference on Experimental Mechanics 2008 and Seventh Asian Conference on Experimental Mechanics, 2008, Nanjing, China

Abstract

This paper presents a 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.

Citation Download Citation

H. Zhao, I. Nasri, and H. J. Li "Strength enhancement of sandwich panel under impact loading", Proc. SPIE 7375, ICEM 2008: International Conference on Experimental Mechanics 2008, 73756B (25 August 2009); https://doi.org/10.1117/12.839374

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