To improve the destruction of a destroy article because pressure at a time when the volume of a metallic small-gage wire and a substance for destruction is expanded is dispersed only by singly placing a destruction rope along the surface of the destroy article, pressure does not work to the destroy article efficiently and the destroy article can not be ruptured sufficiently.
A triangular sectional mounting grove 9 is formed to a destroy article 8, and a destruction rope 2 is installed into the mounting groove 9 and pushed by a hold-down jig 10. A metallic small-gage wire 4 is supplied with a fixed quantity of electric energy in a short time, the volume of the metallic small-gage wire 4 and a destroy substance 7 is expanded, and these expansion force is transmitted to the inclined planes 11 of the mounting groove 9, thus efficiently transmitting expansion force to the destroy article 8, then surely fracturing the destroy article 8.
MAEHATA HIDEHIKO
ARAI HIROSHIGE
KATO TAKESHI
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