AE signals released from different lay-ups composite specimens were acquired by a wideband transducer, and fracture surfaces of the specimens were observed by scanning electron microscope (SEM).

• 宽带传感器记录了不同角度纤维铺层的复合材料试样在拉伸破坏过程中的声发射信号，用扫描电子显微镜(SEM)观察了试样的几种典型的损伤破坏断面，对比分析了不同类型的损伤机制。