Abstract
When a high speed projectile collides with aluminum foam, it has been reported that unique crater which has narrow entrance and large cavity like a turnip is formed. In case of a material with higher porosity, it is considered that debris cloud is produced by the impact, and the crater is created by scattering it into the inside of the material. In addition, melting traces are observed and it is predicted to melt with heat created by the impact. As one of measurement methods of the transient impact temperature, measurement of plasma induced by high speed impact using triple probe method were investigated due to record temperature changes near the impact point, which contribute to elucidate the crater formation mechanism. In order to improve the reliability of plasma measurement, the plasma was observed using high speed camera.
