Science and Technology of Energetic Materials

Vol.62, No.4 (2001)

Research paper

On the characteristic of the explosive welding technique using
the underwater shock wave (I)
- High speed deformation of the metal flying plate due to underwater explosion -(*in Japanese)
Shigeru Itoh, Hirofumi Iyama, Masahiro Fujita, Kazuyuki Hokamoto,
and Akio Kira


The explosive welding method has been applied for the industrial production. Many dissimilar metals can be welded by this technique. However, it is difficult to weld very thin metal plate and amorphous film with other metal plate. In order to realizie such welding, it should be controlled so that the pressure acting on the flyer plate and be weldable condition is satisfied. In the newly proposed explosive welding method using underwater shock wave, the pressure acting on the flyer plate can simply be controlled by varying the set - up conditions such as the distance and inclined angle between explosive and flyer plate. We have successfully welded the amorphous film with the steel plate using this method.
In this paper, we first present an example by using this method. Then, in order to assess this method, we have done the experimental observation on the flying of an aluminum plate by underwater shock wave from the detonation of explosive in water. The numerical simulation under the same conditions are carried out and the comparison with the experiment is made.

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