Fast Magnetic Flux Leakage Signal Inversion for the Reconstruction of Arbitrary Defect Profiles in Steel Using Finite Elements

Priewald, Robin H.; Magele, Christian; Ledger, Paul D.; Pearson, Neil R.; Mason, John S. D.

Abstract

This paper proposes a fast and effective method for reconstructing arbitrary defect profiles in steel plates from magnetic flux leakage (MFL) measurements widely used in nondestructive testing (NDT) of oil storage tanks and pipelines. The inverse reconstruction problem is formulated based on a nonlinear forward model using the finite element method (FEM) and is implemented in 2-D. A Gauss-Newton optimization is applied to reconstruct the defect geometry, using efficiently calculated Jacobian information directly derived from the FEM system matrix.

Citation

Priewald, R. H., Magele, C., Ledger, P. D., Pearson, N. R., & Mason, J. S. D. (2013). Fast Magnetic Flux Leakage Signal Inversion for the Reconstruction of Arbitrary Defect Profiles in Steel Using Finite Elements. IEEE Transactions on Magnetics, 49(1), 506-516. https://doi.org/10.1109/tmag.2012.2208119

• Journal Article Type: Article
• Acceptance Date: Jul 11, 2012
• Online Publication Date: Jul 11, 2012
• Publication Date: 2013-01
• Deposit Date: Jun 12, 2023
• Journal: IEEE Transactions on Magnetics
• Print ISSN: 0018-9464
• Electronic ISSN: 1941-0069
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Peer Reviewed: Peer Reviewed
• Volume: 49
• Issue: 1
• Pages: 506-516
• DOI: https://doi.org/10.1109/tmag.2012.2208119
• Keywords: Electrical and Electronic Engineering; Electronic, Optical and Magnetic Materials