The MFL technique for surface flaws of weld zone with residual magnetization method
نویسندگان
چکیده
In the present study, the three components of the residual leakage magnetic fields from the flaws were measured with the MI sensor. Furthermore, finite element analysis for the three components of the residual magnetic fields was carried out. From these experimental and analytical results, By showed the two pairs of the maximum and the minimum and can evaluate the flaw length. In the case of the measurement using the residual magnetization procedure to the test pieces with the butt weld, the signal contained the noise from the weld metal and the geometry of the weld zone. Therefore, the wavelet transform signal processing was applied to the signal for the cancellation of the noise.
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