公开(公告)号：US10551350B2

公开(公告)日：2020-02-04

申请号：US15681186

申请日：2017-08-18

Applicant: UNIVERSITY OF ELECTRONIC SCIENCE AND TECHNOLOGY OF CHINA

Inventor： Yuhua Cheng ,  Libing Bai ,  Yonggang Wang ,  Jie Zhang ,  Chun Yin ,  Shuai Shi ,  Xue Chen

IPC: G01N27/82 ,  G06F17/50 ,  G01N27/83

Abstract: The present invention provides a method for simulating magnetic flux leakage based on loop current, the magnetic distribution of a single loop current is obtained by solid angle, then the magnetic field distribution of a semi-infinite solenoid is obtained based on the assumption of arrangement of loop currents in the magnetized specimen, and its equation is given; and the JA hysteresis model is introduced to obtain the distribution of quasi-static magnetic flux leakage field, on the basis of analyzing the relation between the distribution of a loop current on the surface of the defect and the excitation magnetic field, the distribution of quasi-static magnetic flux leakage field is obtained based on the semi-infinite solenoid.