Abstract

Problems on the penetration of rigid projectiles into epoxy resin targets are studied experimentally. A light gas gun, a drop weight apparatus and an Instron type loading machine are used as the high speed, middle speed and low speed penetration devices, respectively. The test results are discussed in terms of the resistance force to the projectile in the target material relating to the velocity and the temperature. In the high speed region, the proportional relation between the force and the velocity is deduced, while in the middle and low speed tests, the force becomes proportional to the logarithm of the velocity, which is explained as the activation process in the target material.

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