Visualizations of regulated underwater shock waves for metal processing

Shigeru Itoh; Shirou Nagano; Akio Kira; O. Suzuki; Masahiro Fujita

doi:10.1117/12.209547

30 May 1995 Visualizations of regulated underwater shock waves for metal processing

Shigeru Itoh, Shirou Nagano, Akio Kira, O. Suzuki, Masahiro Fujita

Proceedings Volume 2513, 21st International Congress on: High-Speed Photography and Photonics; (1995) https://doi.org/10.1117/12.209547
Event: High-Speed Photography and Photonics: 21st International Congress, 1994, Taejon, Korea, Republic of

Abstract

In various underwater explosive metal processing such as a forming, a cutting or a welding, we have applied suitable regulated shock waves. For example, in the case of making holes on the wall of a pipe from the inside, it is necessary to get the plane underwater shock wave to move perpendicular to its direction of progress. In the case of metal forming, an underwater shock wave with a broad pressure distribution is required. It is very important to know what is the best configuration of the underwater shock wave for the purpose of metal processing. In our case, the explosives are pasted on a plate called a reflector to use their energy efficiently. However, the characteristics of an underwater shock wave generated by detonating these explosives have not yet been understood. The effects of the reflector on the strength and on the configurations of an underwater shock wave are investigated by high speed photography and by an image converter camera. The effects of the angle of the reflector are also investigated. It was confirmed that the strength of the underwater shock wave increases as the angle of the reflector becomes lesser.

Citation Download Citation

Shigeru Itoh, Shirou Nagano, Akio Kira, O. Suzuki, and Masahiro Fujita "Visualizations of regulated underwater shock waves for metal processing", Proc. SPIE 2513, 21st International Congress on: High-Speed Photography and Photonics, (30 May 1995); https://doi.org/10.1117/12.209547

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