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Aerospace 2015, 2(2), 353-375; doi:10.3390/aerospace2020353

Shock Wave Attenuation Using Foam Obstacles: Does Geometry Matter?

Aerospace and Mechanical Engineering, University of Southern California, Los Angeles, CA 90089, USA
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Author to whom correspondence should be addressed.
Academic Editor: Hossein Zare-Behtash
Received: 9 February 2015 / Revised: 5 June 2015 / Accepted: 8 June 2015 / Published: 15 June 2015
(This article belongs to the Special Issue Recent Advances in SWBLI Research)

Abstract

A shock wave impact study on open and closed cell foam obstacles was completed to assess attenuation effects with respect to different front face geometries of the foam obstacles. Five different types of geometries were investigated, while keeping the mass of the foam obstacle constant. The front face, i.e., the side where the incident shock wave impacts, were cut in geometries with one, two, three or four convergent shapes, and the results were compared to a foam block with a flat front face. Results were obtained by pressure sensors located upstream and downstream of the foam obstacle, in addition to high-speed schlieren photography. Results from the experiments show no significant difference between the five geometries, nor the two types of foam. View Full-Text
Keywords: shock impact; shock attenuation; foam; schlieren photography; complex materials shock impact; shock attenuation; foam; schlieren photography; complex materials
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Jeon, H.; Gross, J.R.; Estabrook, S.; Koumlis, S.; Wan, Q.; Khanolkar, G.R.; Tao, X.; Mensching, D.M.; Lesnick, E.J.; Eliasson, V. Shock Wave Attenuation Using Foam Obstacles: Does Geometry Matter? Aerospace 2015, 2, 353-375.

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