玄武岩纤维布/铝板组合防护结构的高速撞击防护性能

The high-velocity impact tests were carried out on the basalt fiber cloth/Al-plate composite shields, the ballistic limit velocity was obtained in the range of ballistic impact velocity. The diameter of 2017 Al-sphere projectile was 3.97 mm, and the impact velocity of Al-spheres was varied between 1.49 and 3.65 km/s. The residual velocity of Al-sphere projectile penetrating thin Al-plate and basalt fiber cloth bumper was analyzed. Furthermore, the shielding performance of the basalt fiber cloth/Al-plate composite shields was studied based on the critical impact kinetic energy for the failure of the single Al-plate. The results show that the velocity reduction of the constant diameter projectile penetrating the same basalt fiber cloth bumper at different velocities is a constant when the projectile is not broken. The velocity reduction of the projectile decrease with increasing diameter. For the same areal density, the shielding performance of composite shield with aluminum plate as the first wall is better than that of composite shield with basalt fiber cloth as the first wall.