SiC和B4C防弹插板抗多发弹打击损伤特性研

使用87式5.8 mm钢芯弹分别对SiC和B₄C复合防弹插板进行实弹靶试试验, 通过对鉴证靶凹陷深度、防弹插板背凸体积和X射线数字直接成像检测系统(DR)对防弹插板弹击损伤情况进行分析, 同时结合陶瓷材料显微结构和力学性能分析对防弹插板抗多发弹打击损伤特性进行了研究。结果表明, SiC和B₄C防弹插板都能有效防御3发5.8 mm钢芯弹的连续打击, 具有较好的抗多发弹打击性能;B₄C防弹插板与SiC防弹插板受弹击后鉴证靶凹陷深度相当, 其背凸体积较SiC防弹插板降低超过35%, 陶瓷锥底面平均直径增加30%以上, 吸收了更多的弹丸冲击动能, 这与B₄C陶瓷具有较高的硬度有关。

Damage Characteristics of SiC and B4C Ballistic Insert Plates Subjected to Multi-hi

The ballistic impact tests of SiC and B₄C ballistic insert plates were conducted with 87-type 5.8 mm steel core projectile. Through the analysis on the depth of penetration in clay witness, bulge volume at the back of the ballistic insert plates, and impact damage being nondestructively tested by digital radiograph (DR), the damage characteristics of SiC and B₄C ballistic insert plates after multi-hit were investigated. Meanwhile, the microstructures and mechanical properties of ceramic materials were also studied. The results show that SiC and B₄C ballistic insert plates effectively resist 87-type 5.8 mm steel core projectile for 3 times and show good multi-hit capability. The depths of penetration in clay witness of B₄C ballistic insert plate are comparable with SiC ballistic insert plate. Compared with SiC ballistic insert plate, the volume of bulge at the back of B₄C ballistic insert plate is reduced by more than 35%, and the average diameter of the ceramic cone of B₄C ballistic insert plate is increased by more than 30%. The impact energy of the projectile is effectively absorbed by the B₄C ballistic insert plate, which attributes to the high hardness of B₄C ceramic.