HUA Bin, LI Ping, WEN Yu-mei, et al. Detection method of steel plate defects based on Barkhausen effect[J]. 2011, 30(1): 50-53. DOI: 10.13873/j.1000-97872011.01.003.
The principle of defect detection using Barkhausen signals is expounded.According to the skin effect
penetration depth can be adjusted by regulating the frequency of alternating magnetic field
and the defects at deep region of ferromagnetic material can be detected by using serial layer scanning.The method of wavelet multi-resolution analysis is used for signal processing.The experimental results show that the air interstice defects of steel plate can be detected and located using this method
and the signal processing effect of using wavelet multi-resolution analysis is better than that of the traditional methods
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