Abstract:A two-stage light gas gun is used to launch aluminum sphere projectiles impacting on fiber cloth/aluminum plate composite multi-wall shields by high and low temperature alternating or electron irradiation at different ambient temperature. The damage model of multi-wall shields impacted at different ambient temperature are obtained. The effect of high and low temperature alternating and electron irradiation on damage and protection performance of the fiber cloth/aluminum plate composite multi-wall shields at different ambient temperature are studied. The Al-sphere projectile diameter is 3.97mm. Impact velocities of projectile are varied between 1.4km/s and 3.53km/s. The impact angle is 0°. Ambient temperatures are 20℃, 200℃ and -100℃ respectively. The results indicate that high temperature of environment, high and low temperature alternating, electron irradiation can lead to protection performance of the fiber cloth/aluminum plate composite multi-wall shield degradation. Low temperature of environment can make protection performance of the fiber cloth/aluminum plate composite multi-wall shield improvement. High temperature of environment and temperature alternating effect on protection performance of the fiber cloth/aluminum plate composite multi-wall shield is more significant.
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