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本文用声显微技术对发动机叶片上的激光打孔进行了检测研究，发现沿孔周存在的周向裂纹和径向裂纹。指出，径向裂纹是影响叶片安全使用寿命的主要因素。
In this paper, acoustic microscopy was used to detect the laser drilling on the engine blades, and the circumferential cracks and radial cracks along the hole circumference were found. It is pointed out that the radial cracks are the main factors affecting the safe service life of the blade.