介绍探测复合材料层板基体裂纹的三种实验技术：声波发射探测，超声波c扫描和复制带记录。
Three experimental techniques for detecting matrix cracking evolution in composite laminates are investigated: acoustic emission detection, ultrasonic wave C-scan, and replica tape record.
在应用断裂力学时，采用了观测和超声波探测方法确定初始裂纹尺寸。
The initial crack size was assumed through the visual inspection and the ultrasonic detection method.
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