Surface geometry reconstruction of corrosion defects of ferromagnetic materials product by the optimization by linear approximation

L. V. Mikhailov; Михайлов Л. В.; A. V. Mikhailov; Михайлов А. В.; A. V. Nikitin; Никитин А. В.; Ya. G. Smorodinskii; Смородинский Я. Г.; V. N. Kostin; Костин В. Н.

doi:10.31857/S0130308225070084

Surface geometry reconstruction of corrosion defects of ferromagnetic materials product by the optimization by linear approximation

Авторлар: Mikhailov L.V.¹, Mikhailov A.V.¹, Nikitin A.V.¹, Smorodinskii Y.G.¹, Kostin V.N.¹
Мекемелер:
1. M.N. Mikheev lnstitute of Metal Physics of Ural Branch of Russian Academy of Sciences
Шығарылым: № 7 (2025)
Беттер: 70-73
Бөлім: По материалам XXXV Уральской конференции «Физические методы неразрушающего контроля (Янусовские чтения)»
URL: https://stomuniver.ru/0130-3082/article/view/688881
DOI: https://doi.org/10.31857/S0130308225070084
ID: 688881

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Аннотация

The paper describes a technique developed by the authors for reconstructing the shape and size of surface corrosion defects in products made of ferromagnetic materials based on measured components of the magnetic leakage field strength near the surface of the test object. The optimization problem of approximating the signal of a two-dimensional finite element model to the measured signal was solved by optimization using linear approximation with constraints. A method for approximating the defect shape using basis splines and a physical justification for choosing the reference points of spline interpolation are presented. The described technique was tested in a numerical experiment using a symmetrical defect and an arbitrary-shaped defect as an example.

Негізгі сөздер

magnetic testing, magnetic flux leakage, defectometry, inverse problem