提出了一种新型的用于漏磁检测的复合励磁磁化模型。利用ANSYS有限元软件进行有限元仿真分析,分别改变安匝数、缺陷深度、缺陷大小等参量,获得缺陷处的漏磁场分布特性,并对模型进行了试验证。有限元结果与试验结果均表明: 多路并联复合励磁模型有效,并可用于钢板缺陷的检测。

This paper proposes a new kind of compound excitation model which can be used for MFL. In this article,the number of ampere turns and the depth or size of the defects were separately changed and finite element simulation analysis was made by using the ANSYS software,and hence the leakage magnetic field distribution characteristics of the defect were acquired. The experimental study of the model was carried out,and experimental data were obtained. The finite element and experimental results show that the compound excitation model is effective,and can be used for defect detection in steel plates.