陶瓷/纤维层间混杂复合材料设计制作及抗弹体冲击性能测试

As a comprehensive military fortifications for command, defense, observation, shooting in the battlefield, the porthole of the shelter often becomes the weak point and the protection performance determines the internal personnel security. This paper focused on designing and fabricating the fiber/ceramic interlayer hybrid composite material for protective small arms, and the bulletproof ability of the composites was tested. Firstly, a numerical model of the protective deck produced with fiber/ceramic interlayer hybrid composite was established based on ABAQUS/Explicit. The effects of the different ratio of the hybrid fiber and the homogenous fiber, and the laying angle of fiber on the impact resistance of the composite protective deck were studied. The results indicate that the composites show the best protection when the Kevlar-glass fiber mixed ratio is 0.3-0.7 and the fiber laying angle is 0°/30°/60°/90°/−60°/−30°/0°. Secondly, according to the simulation results, the high strength glass fiber S-2/TDE-85 epoxy composite laminates, SiC ceramics and Kevlar 49 fiber/TDE-85 epoxy composite laminates were stacked successively by combination of winding and hand lay-up techniques to fabricate the fiber/ceramic interlayer hybrid composite material protective deck specimens. Finally, the improved Hopkinson pressure bar device was applied to carry out the projectile impact tests on the protective deck. The results demonstrate that the designed protective deck can withstand the penetration of bullets with an average velocity of 500 m/s, which agrees with the theoretical calculation results.