WIT Press


Interactive Effect Of Shock Wave With Porous Foam

Price

Free (open access)

Paper DOI

10.2495/CMEM010231

Volume

30

Pages

10

Published

2001

Size

1,032 kb

Author(s)

K. Kitagawa, M. Kainuma, K. Takayama, M. Yasuhara

Abstract

Interactive effect of shock wave with porous foam K. Kitagawa\ M. Kainuma\ K. Takayama^ M. Yasuhara* ^Department of Mechanical Engineering, Aichi Institute of Technology, Japan ^ Shock Wave Research Centre, Institute of Fluid Science, Tohoku University, Japan Abstract Collision of a planar shock wave with porous foam is investigated experi- mentally by holography as well as numerically. We investigate the unsteady process occurring when a shock wave passes through porous material. Experiments on shock wave-foam interaction are conducted by using a shock tube. Experimental form of polyurethane foam is of 60mm x 150mm cross section with 1200mm long (open cell type, high-porosity ^=0.974 ~ 0.987 and low density pc=16~31kg/m^). The deformation and wave propagation in the foam is visualized by using single-exposure holographic interferometry and high speed video. The compression wave in the foam moves at lower velocity than the shock wave (Ms=1.19). When the incident shock wave h

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