The MFL technique for surface flaws of weld zone with residual magnetization method
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.
MFL testing residual magnetization wavelet transform weld zone
Naoya KASAI Takao MIZOGUCHI Toshiyuki OIKAWA Hiroyuki KOSHINO Kazuyoshi SEKINE
The Graduate School of Environment and Information Sciences, Yokohama National University 79-5 Tokiwadai, Hodogaya-ku, 240 -8501, Yokohama, 240-8501, JAPAN
国际会议
第十七届世界无损检测会议(17th World Conference on Nondestructive Testing)
上海
英文
2027-2030
2008-10-25（万方平台首次上网日期，不代表论文的发表时间）