Quantitative Research on Cracks in Pipe Based on Magnetic Field Response Method of Eddy Current Testing

Authors

  • Feng Jiang 1 School of Electrical and Information Engineering Changzhou Institute of Technology, Changzhou, 213032, China , School of Mechatronics Engineering and Automation Shanghai University, Shanghai, 200072, China
  • Shulin Liu School of Mechatronics Engineering and Automation Shanghai University, Shanghai, 200072, China
  • Li Tao Library and Information Center Jiangsu Vocational College of Information Technology, Wuxi, 214153, China

Keywords:

Cracks evaluation, Eddy current testing, finite element method, magnetic field, pipe

Abstract

The quantitative evaluation of defects in eddy current testing is of great significance. Impedance analysis, as a traditional method, is adopted to determine defects in the conductor, however, it is not able to depict the shape, size and location of defects quantitatively. In order to obtain more obvious characteristic quantities and improve the ability of eddy current testing to detect defects, the study of cracks in metal pipes is carried out by utilizing the analysis method of three-dimensional magnetic field in present paper. The magnetic field components in the space near the crack are calculated numerically by using finite element analysis. The simulation results confirm that the monitoring of the crack change can be achieved by measuring the magnetic field at the arrangement positions. Besides, the quantitative relationships between the shape, length of the crack and the magnetic field components around the metal pipe are obtained. The results show that the axial and radial magnetic induction intensities are affected more significantly by the cross-section area of the crack. Bz demonstrates obvious advantages in analyzing quantitatively crack circumference length. Therefore, the response signal in the three-dimensional direction of the magnetic field gets to intuitively reflect the change of the defect parameter, which proves the effectiveness and practicability of this method.

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Author Biographies

Feng Jiang, 1 School of Electrical and Information Engineering Changzhou Institute of Technology, Changzhou, 213032, China , School of Mechatronics Engineering and Automation Shanghai University, Shanghai, 200072, China

Feng Jiang was born in Yancheng, China, in 1981.He received the M.Sc. degree in the School of Mechanical Engineering from Jiangsu University, Zhenjiang, China, in 2006 and received Ph.D. degree from Shanghai University, Shanghai, China, in 2019. He is currently working as an Associate Professor in Electrical and Information Engineering at Changzhou Institute of Technology. His research interests include electromagnetic nondestructive evaluation, mathematical modeling and fault diagnosis. Shulin Liu was born in 1963 and received the M.Sc. degree in the School of Mechan

Shulin Liu, School of Mechatronics Engineering and Automation Shanghai University, Shanghai, 200072, China

Shulin Liu was born in 1963 and received the M.Sc. degree in the School of Mechanical Engineering from Yanshan University, Qinhuangdao, China, in 1989 and received his Ph.D. degree from Harbin Institute of Technology, Harbin, China, in 2003. Since 2008, he is a Professor and Doctoral Supervisor at School of Mechatronics Engineering and Automation, Shanghai University, China. His major research direction is complex equipment fault diagnosis.

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Published

2021-01-08

How to Cite

[1]
Feng Jiang, Shulin Liu, and Li Tao, “Quantitative Research on Cracks in Pipe Based on Magnetic Field Response Method of Eddy Current Testing”, ACES Journal, vol. 36, no. 1, pp. 99–107, Jan. 2021.

Issue

2021: Vol 36 Iss 1

Section

Articles