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Academic Journal of Engineering and Technology Science, 2019, 2(5); doi: 10.25236/AJETS.2019.020507.

Finite Element Simulation and Experimental Research of Magnetic Flux Leakage Testing Based on Single Permanent Magnet Magnetization


Mengtao Liu1, Hongjie Zhang1, *, Tao Yang1, Weifei Niu2, Yonglei Dou2 and Qi Zhang3

Corresponding Author:
Hongjie Zhang

1 School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
2 Tianjin Dinghua Testing Technology Company Limited, Tianjin, 300192, China
3 Hangzhou Xiaoshan Technician College, Hangzhou, 311200, China
*Corresponding author e-mail: 879065166@qq.com


About the magnetic flux leakage testing technology for the defect in steel storage tanks, in this research, a new method of constructing magnetization system by using cubic single permanent magnet was proposed. Using ANSOFT MAXSWELL finite element software, the influence law of permanent magnet size on magnetization effect and the magnetic induction intensity at different positions in space were investigated. A magnetic flux leakage (MFL) testing system was specially built up, based on which testing performance of the MFL system for the artificial circular-hole and rectangle deflects was evaluated. The testing results show that the method, with respect to constructing the magnetization system relying on the single permanent magnet, is feasible and effective, laying a foundation for the future research on geometrical morphology evaluation for the defect. Compared with the traditional magnetization system constituted by double permanent magnets, the newly proposed method possesses a better design flexibility and a lower cost, showing a good application prospect.


Steel material, magnetic flux leakage testing, single permanent magnet magnetization system

Cite This Paper

Mengtao Liu, Hongjie Zhang, Tao Yang, Weifei Niu, Yonglei Dou and Qi Zhang. Finite Element Simulation and Experimental Research of Magnetic Flux Leakage Testing Based on Single Permanent Magnet Magnetization. Academic Journal of Engineering and Technology Science (2019) Vol. 2 Issue 5: 57-66. https://doi.org/10.25236/AJETS.2019.020507.


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