本文介绍了厚壁压力容器再热裂纹的产生机理，分类和特点，探测方法，影响因素及预防措施等。
The mechanism of the reheat cracking in thick-walled pressure vessels, its classification, features, detection methods, influencing factors and precautions are described.
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.
实际裂纹检测表明，这种方法灵敏度高、探测范围大，容易实现自动检测。
This method is of high sensitivity and wide range of detection, and computerized acquisition and processing can also be easily achieved.
实际裂纹检测表明，这种方法灵敏度高、探测范围大，容易实现自动检测。
This method is of high sensitivity and wide range of detection, and computerized acquisition and processing can also be easily achieved.
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