In this paper an advanced MFLT method is proposed for detecting far side defects in a welding part of a thick stainless steel plate based on the measurement of the remanent magnetic field. The method consists of a double yoke magnetizer, high frequency demagnetization procedure and an inverse analysis scheme. The performance of the proposed method is investigated through numerical simulations and experiments. The results show that a far side defect in a plate as thick as 20 mm is possibly to be detected by using the proposed strategy.
|Number of pages||6|
|Journal||International Journal of Applied Electromagnetics and Mechanics|
|Publication status||Published - 2004|
- High frequency demagnetization
- Inverse problem
- Magnetic flux leakage method
- Remanent magnetization