针对微小孔周裂纹高精度检测的柔性旋转涡流检测探头及方法
By using a flexible array rotating eddy current detection probe and differential detection method, the problem of high-precision detection of micro-cracks around the cooling film holes of turbine blades was solved, and high-precision identification and location of micro-cracks were achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- XI AN JIAOTONG UNIV
- Filing Date
- 2023-04-06
- Publication Date
- 2026-07-17
AI Technical Summary
Existing technologies are insufficient for high-precision detection of minute cracks around the cooling film holes of turbine blades, and traditional rigid rotating eddy current probes have limited detection performance on complex curvature structures, resulting in easily obscured detection signals and a high rate of missed detections.
A flexible array rotating eddy current detection probe is designed, which uses a flexible silicone pad and an FPC flexible excitation coil, combined with differential phase and differential amplitude detection methods, to achieve high-precision detection of peripore cracks in the cooling film of turbine blades.
It achieves high-precision detection of cooling film hole peripore cracks in turbine blades within the range of 0.5×0.2mm2 to 1×0.2mm2, reduces detection noise, and improves detection accuracy and reliability.
Smart Images
Figure CN116337994B_ABST