GAO Yang-hua, ZHANG Guang-xin, HUANG Ping-jie, et al. Research on key technology of eddy current testing system based on GMR transducer[J]. 2009, 28(11): 31-33+36.
GAO Yang-hua, ZHANG Guang-xin, HUANG Ping-jie, et al. Research on key technology of eddy current testing system based on GMR transducer[J]. 2009, 28(11): 31-33+36. DOI: 10.13873/j.1000-97872009.11.003.
A new GMR eddy current probe and detection system are designed.The framework
principle of the system
problems that should be paid attention during the design and the key techniques in this system are emphasized.Specimen aluminium is used in the detecting experiment verification.The experiment results show that the GMR eddy current probe possesses higher sensitivity and deeper defect detection capability compared with the conventional coil probe during deep defect inspection of the multi-layered conductive structures.