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Proceedings Paper

Observation of interaction of shock wave with gas bubble by image converter camera
Author(s): M. Yoshii; M. Tada; T. Tsuji; Kohji Isuzugawa
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Paper Abstract

When a spark discharge occurs at the first focal point of a semiellipsoid or a reflector located in water, a spherical shock wave is produced. A part of the wave spreads without reflecting on the reflector and is called direct wave in this paper. Another part reflects on the semiellipsoid and converges near the second focal point, that is named the focusing wave, and locally produces a high pressure. This phenomenon is applied to disintegrators of kidney stone. But it is concerned that cavitation bubbles induced in the body by the expansion wave following the focusing wave will injure human tissue around kidney stone. In this paper, in order to examine what happens when shock waves strike bubbles on human tissue, the aspect that an air bubble is truck by the spherical shock wave or its behavior is visualized by the schlieren system and its photographs are taken using an image converter camera. Besides,the variation of the pressure amplitude caused by the shock wave and the flow of water around the bubble is measured with a pressure probe.

Paper Details

Date Published: 30 May 1995
PDF: 6 pages
Proc. SPIE 2513, 21st International Congress on: High-Speed Photography and Photonics, (30 May 1995); doi: 10.1117/12.209548
Show Author Affiliations
M. Yoshii, Osaka Univ. (Japan)
M. Tada, Osaka Univ. (Japan)
T. Tsuji, Osaka Univ. (Japan)
Kohji Isuzugawa, Osaka Univ. (Japan)


Published in SPIE Proceedings Vol. 2513:
21st International Congress on: High-Speed Photography and Photonics
Ung Kim; Joon-Sung Chang; Seung-Han Park, Editor(s)

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