Based on the fast detection problem of aero-engine turbine Blades, a new differential eddy current sensor is developed with mechanical self-compensation, the research of automated eddy current testing experiment on turbine blade of aero-engine is developed with the five axis linkage contour automatic detection system. The results show that using the eddy current sensor with the automatic detection system is able to eliminate the lift-off signal, reduce jitter interference, and effectively improve the signal-to-noise ratio compared with manual detection. This method is expected to be applied to the metal with complex curved surface like turbine blade.
宋凯1,王冲1,张丽攀1,王婵2,李轶名1,赵志忠1. 航空发动机涡轮叶片裂纹的自动仿形涡流检测系统设计及试验研究[J]. 航空制造技术, 2018, 61(19): 45-49.
SONG Kai1, WANG Chong1, ZHANG Lipan1, WANG Chan2, LI Yiming1, ZHAO Zhizhong1. Design and Experimental Study of Automated Eddy Current Testing System for Turbine Blade Crack. Aeronautical Manufacturing Technology, 2018, 61(19): 45-49.