高强玻璃纤维板抗高速破片侵彻性能试验

为了研究高强玻璃纤维板抗高速破片侵彻性能,开展了弹道试验,探讨了破片入射速度、靶板厚度对高强玻璃纤维板抗侵彻性能的影响,通过对弹道试验结果分析,指出了高强玻璃纤维板的变形失效模式、吸能特性和抗侵彻机理。结果表明:破片在侵彻高强玻璃纤维板过程中可视为刚体,高强玻璃纤维板迎弹面破坏模式为纤维剪切破坏并伴随纤维反向喷出,迎弹面弹孔附近区域出现基体碎裂、纤维脱粘;背弹面破坏模式为纤维拉伸断裂,背弹面损伤区域远大于迎弹面损伤区域;高强玻璃纤维板单位面密度吸能随着破片侵彻速度增加呈线性增加,在试验速度范围内,得出了立方体破片侵彻不同厚度靶板入射速度与剩余速度、入射速度与靶板单位面密度吸能关系。

Experiment of Anti-Penetration Performance of High Strength Fiber Glass Plate Under High Velocity Fragment Impact

In order to study the anti-penetration performance of high strength fiber glass plate,ballistic experiment was carried out and the influence of fragment impact velocity as well as the thickness of plate on penetration resistance of high strength glass fiber reinforced plastics was studied. By analysing the result of experiment,the deformation and failure morphology,the energy absorption and the mechanical anti-penetration of high strength fiber-glass plate were found. The result shows that the fragment can be regard as rigid in the impact process,the deformation and failure morphology of plate front area is fiber shear with fiber eject on the opposite orientation. The vicinity of bullet hole appeare matrix crack and fiber seperation with matrix. The deformation and failure morpholoy of plate rear is fiber tensile fracture,the damage area of rear plate is more bigger than that of front area. The per area energy of high strength fiber glass plate is linear increased with the impact velocity increased. In the range of experimental result,the relation of the impact velocity and the residual velocity of fragment as well as the relation of the per area energy absortion and the impact velocity of different thickness plates were conducted.