Acousto-ultrasonic(AU) measurements were performed on impact-damaged carbon-carbon composites by using plain piezoelectric transducers putting on thin strips symmetrically, instead of commercial acoustic emission ones.

• 根据声-超声基本原理，以普通压电陶瓷传感器替代商用声发射超声换能器，采用传感器对称布置方式，对具有预冲击脱层损伤的碳-碳复合材料薄板做了声-超声测试。