锥体冲击芳纶复合材料的损伤及其机理研究

Study of circular impact damage to kevlar composites and mechanism

采用锥体 (锥角为 6 0°)在 2～ 8m/s的冲击速度范围内对芳纶复合材料进行了冲击试验 ,研究了锥体冲击损伤过程、形貌及损伤机理。结果表明 :芳纶复合材料比玻纤复合材料损伤尺寸大 ;冲击速度提高 ,抗穿透能力提高 ;存在明显的裂纹诱导作用和厚度效应 ;

Thin Kevlar composites have been impacted by circular cone (cone angle: 60°) in 2∼8m/s impact speed. The damnification process and appearance and its mechanism have been investigated. The result showed that damnification size of Kevlar composites was larger than glass fiber composites. The anti-penetrate capability of composites increases when the impact speed increases. Distinct function of crack inducement occurs when circular cone penetrate composites increases. The circular cone impact energy absorption for composites is decided by destroy model.