Laser-made holes on engine blade have been tested with acousticmicroscopic technique.Circumferential and radial cracks aroundholes have been found.

 
  • 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。
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