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Crack opening shape reconstruction method in magnetic flux leakage imaging
ID：8 View Protection：PUBLIC Updated Time：2022-12-17 09:43:06 Hits：998 Poster Presentation

Start Time：Pending（Asia/Shanghai）

Duration：Pending

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Abstract
Magnetic flux leakage (MFL) is widely used to detect ferromagnetic materials. In the study of the reconstruction of cracks, the opening crack profile reconstruction method is the first and crucial step. However, current research concerns little about the reconstruction of the opening profile. This paper proposed an opening profile reconstruction method by introducing the Newton-Raphson and iterative Tikhonov regularization method. And the solenoid model applicable to the derivation of magnetic fields with complex defects is presented as an analytical forward model of magnetic fields. The sensitivity matrix of the analytical model of the magnetic field is adapted by improving the differential method of the magnetic field. The comparative experimental results show that this method has good results for defect profile reconstruction in MFL inspection and has apparent advantages in accuracy compared with the traditional defect profile segmentation method.
 
Keywords
nondestructive testing, magnetic flux leakage, opening shape reconstruction, Newton-Raphson, iterative Tikhonov regularization
Speaker
Shengping Li
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Shengping Li received the B.S. degree and master's degree from University of Electronic Science and Technology of China, Chengdu, China, in 2018 and 2021. He is currently working toward the Ph.D. degree in the School of Automation Engineering, University of Electronic Science and Technology of  China, Chengdu. His research interests include nondestructive testing, sensor signal processing.

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Important Date

  • Conference Date

    Nov 30

    2022

    to

    Dec 02

    2022

  • Nov 30 2022

    Draft paper submission deadline

  • Dec 24 2022

    Contribution Submission Deadline

  • Apr 13 2023

    Registration deadline

Sponsored By
Harbin Insititute of Technology
China Instrument and Control Society
Heilongjiang Instrument and Control Society
Chinese Institute of Electronics
IEEE I&M Society Harbin Chapter
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