Magnetic flux leakage (MFL) testing is widely used to inspect and characterize defects in pipelines, storage tanks and other structures. In this paper, based on the Maxwell Equations, numerical simulation and experimental research of crack magnetic flux leakage field were carried out. The three-dimensional models of cracks were established, the influence of the generalized crack parameters to the magnetostatic MFL field, including depth, width, inclination angle and crack spacing, was discussed. The relationship between defect parameters and MFL amplitude was obtained. The amplitude is significantly affected by the inclination angle. Therefore, single direction inspection may lead to undetected in practice. While the two cracks interval is less than 5 mm, the MFL fields would overlap. Furthermore, the experimental investigations were developed, and the results agree well with that of the simulation. The conclusions could provide valuable reference for inspection.
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ASME 2011 Pressure Vessels and Piping Conference
July 17–21, 2011
Baltimore, Maryland, USA
Conference Sponsors:
- Pressure Vessels and Piping Division
ISBN:
978-0-7918-4451-9
PROCEEDINGS PAPER
Numerical Simulation and Experimental Research on Crack Magnetic Flux Leakage Field
Fujun Liu,
Fujun Liu
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
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Mulin Zheng,
Mulin Zheng
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
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Shuai Kong,
Shuai Kong
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
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Zhangwei Ling,
Zhangwei Ling
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
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Yueqiang Qian
Yueqiang Qian
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
Search for other works by this author on:
Fujun Liu
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
Mulin Zheng
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
Shuai Kong
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
Zhangwei Ling
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
Yueqiang Qian
Zhejiang Provincial Special Equipment Inspection and Research Institute, Hangzhou, Zhejiang, China
Paper No:
PVP2011-57514, pp. 731-737; 7 pages
Published Online:
May 21, 2012
Citation
Liu, F, Zheng, M, Kong, S, Ling, Z, & Qian, Y. "Numerical Simulation and Experimental Research on Crack Magnetic Flux Leakage Field." Proceedings of the ASME 2011 Pressure Vessels and Piping Conference. Volume 1: Codes and Standards. Baltimore, Maryland, USA. July 17–21, 2011. pp. 731-737. ASME. https://doi.org/10.1115/PVP2011-57514
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