航空发动机涡轮叶片近表面缺陷的涡流检测

Eddy current testing of near-surface defect in turbine blade of aero-engine

针对某型航空发动机涡轮叶片排气边的近表面冷隔缺陷,设计了一种能够满足工程应用的叶片排气边涡流检测专用探头。分析检测过程中的异常信号特征,可有效识别缺陷信号,实现叶片排气边近表面冷隔缺陷的早期诊断。该方法可供同行参考。

Aiming at the near-surface clod shut defects in turbine blade of aero-engine, a special probe for blade eddy current detection which can meet the engineering application is designed. Analyzing the abnormal signal characteristics in the detection process can effectively identify the defect signal and realize the early diagnosis of the cold shut defect on the near-surface in blade exhaust edge. The relevant methods can be used as a reference for peers.