24 October 2017 Eddy current testing for blade edge micro cracks of aircraft engine
Author Affiliations +
Proceedings Volume 10458, AOPC 2017: 3D Measurement Technology for Intelligent Manufacturing; 1045806 (2017) https://doi.org/10.1117/12.2281274
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Based on the problems of low detection efficiency in the micro cracks detection of aircraft engine blades, a differential excitation eddy current testing system was designed and developed. The function and the working principle of the system were described, the problems which contained the manufacture method of simulated cracks, signal generating, signal processing and the signal display method were described. The detection test was carried out by taking a certain model aircraft engine blade with simulated cracks as a tested specimen. The test data was processed by digital low-pass filter in the computer and the crack signals of time domain display and Lissajous figure display were acquired. By comparing the test results, it is verified that Lissajous figure display shows better performance compared to time domain display when the crack angle is small. The test results show that the eddy current testing system designed in this paper is feasible to detect the micro cracks on the aeroengine blade and can effectively improve the detection efficiency of micro cracks in the practical detection work.
© (2017) COPYRIGHT Society of Photo-Optical Instrumentation Engineers (SPIE). Downloading of the abstract is permitted for personal use only.
Wei-min Zhang, Wei-min Zhang, Min-dong Xu, Min-dong Xu, Xuan-yi Gao, Xuan-yi Gao, Xin Jin, Xin Jin, Feng Qin, Feng Qin, } "Eddy current testing for blade edge micro cracks of aircraft engine", Proc. SPIE 10458, AOPC 2017: 3D Measurement Technology for Intelligent Manufacturing, 1045806 (24 October 2017); doi: 10.1117/12.2281274; https://doi.org/10.1117/12.2281274


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