Academic Journal of Engineering and Technology Science, 2019, 2(5); doi: 10.25236/AJETS.2019.020507.
Mengtao Liu1, Hongjie Zhang1, *, Tao Yang1, Weifei Niu2, Yonglei Dou2 and Qi Zhang3
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: [email protected]
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
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.
[1] Y.X. Wang (2018). Corrosion reasons and anti-corrosion measures for gasoline tanks. Technology and Equipment, vol.44, no.7, p.115.
[2] Y.H. Liu (2018). Research and application of acoustic emission on-line testing system for corrosion of large crude oil storage tank bottom. Zhoushan: Zhejiang Ocean University.
[3] Z. Niu, J.Z. Chen and P. Huo (2019). Image processing based magnetic particle detection of spherical tank surface cracks. Mechanical Engineering and Automation, no.2, p.150-152.
[4] S.L. Zhao (2019). Application of permeability detection in weld detection of pressure vessels. Inspection and Certification, vol.28, no.3, p.11.
[5] L. Yang, C.F. Xu and Y.P. Song (2019). Quantitative method of pipeline defects based on triaxial magnetic flux leakage detection[J]. Pipeline Technique and Equipment, no.4, p.29-31.
[6] H.Q. Pham, B.V. Tran and D.T. Doan (2018). Highly sensitive planar hall magnetoresistive sensor for magnetic flux leakage pipeline inspection. IEEE Transactions on Magnetics, vol.54, no.6, p.1-5.
[7] H. Shi (2017). Magnetic flux leakage detection mathematical model of permanent magnet ferromagnetic loops. Shenyang: Shenyang University of Technology.
[8] X.C. Song, S.L Huang and W. Zhao (2007). Optimization of the magnetic circuit in the MFL inspection system for storage-tank floors. Russian Journal of Nondestructive Testing, vol.43, no.5, p.326-331.
[9] M. Katoh, K. Nishio and T. Yamaguchi (2000). FEM study on the influence of air gap and specimen thickness on the detectability of flaws in the yoke method, Nondestructive Testing and Evaluation International, vol.33, no.5, p.333–339.
[10] G.S. Park and E.S. Park (2002). Improvement of the sensor system in magnetic flux leakage-type nondestructive testing. IEEE Transactions on Magnetics, vol.38, no.2, p.1277-1280.
[11] P. Wang, Y. Gao and G. Tian (2014). Velocity effect analysis of dynamic magnetization in high speed magnetic flux leakage inspection. Nondestructive Testing and Evaluation International, no.64, p.7-12.
[12] D.S. Chen (2017). Study on spatial distribution characteristics of leakage magnetic field in tank floor defect [D]. Daqing: Northeast Petroleum University.