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| Simulation and POD Analysis of Eddy Current Detection of Coated Blade Based on CIVA |
| ZHANG Haibing1 , WANG Shitao2 , SHAN Borong1 |
| (1. Qingdao Campus of Naval Aeronautical University, Qingdao 266041, China; 2. No.31002 Troops of PLA, Beijing 100076, China) |
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Abstract Aero-engine blades are usually coated on the surface of their parts in manufacture to prolong the engine life. This paper simulates the typical fatigue cracking damage of certain engine blades, uses the CIVA simulation technology to conduct the eddy current detection simulation test to verify the effect of coating on eddy current detection. Using the method of numerical simulation, taking the defect depth as a characteristic parameter and the thickness of the coating as the uncertainty, the POD analysis is carried out. The influence and measures of eddy current lift–off effect and the skin effect on detection reliability are studied to further verify the feasibility and reliability of eddy current testing technology in the detection of coated blade defects.
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2021, 
