结合随机渐进失效分析方法和声发射监测对复合材料单向拉伸试件进行损伤分析.结果表明:随机渐进失效方法能很好地反映复合材料失效的随机性和渐进性特征.受载初期,复合材料失效的随机性特征明显,在整个试件内均有失效产生.随着载荷的增加,损伤不断累积,"随机临界核"形成,复合材料很快失效,且一旦有失效产生,纤维断裂数的增加与声发射事件数的累积具有很好的一致性.比较基体开裂和界面脱粘对复合材料拉伸性能的影响:界面脱粘比基体开裂更容易导致复合材料拉伸性能的下降,当不存在基体开裂和界面脱粘时,纤维断裂呈现"集簇"特征,复合材料断裂的脆性特征较为明显.
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