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

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.