Finite Element Analysis of Magnetic Flux Leakage Detection for Transverse Cracks of Sucker Rod

doi:10.16182/j.issn1004731x.joss.201804036

Abstract

Abstract: The modeling and testing technology of the surface transverse cracks of complex defecting for sucker rod were studied, and a finite element simulation model of rod transverse defects was built. The magnetic flux leakage testing simulation was carried out by using ANSYS software, and the changing trend between the lift-off value and the leakage magnetic field was obtained. Two kinds of different magnetization modes of single coil and double coils were analyzed, and the result showed that the double coils magnetization is superior to single coil magnetization. The two dimensional and three dimensional magnetic flux leakage testing models were studied. The magnetic induction intensities of different lift-off values were analyzed. The key data between sensor and detection device were extracted. Simulation results showed that the magnetic flux leakage detection method can be used to detect transverse cracks of sucker rod.

Key words: magnetic flux leakage detection, finite element analysis, coil magnetization, lift-off value, sucker rod

CLC Number:

TE931
TP391

Zhang Ou, Wei Xueye, Wang Pei, Yan Shuxin. Finite Element Analysis of Magnetic Flux Leakage Detection for Transverse Cracks of Sucker Rod[J]. Journal of System Simulation, 2018, 30(4): 1504-1510.

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