Determination of Crack Depth Profile in Cylindrical Metallic Structures, Using Alternating Current Field Measurement Data

Akbari-Khezri, Ali; Sadeghi, S.H.H.

doi:10.1007/s10921-019-0596-3

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…The double gradient fusion algorithm (DGFA) is developed, in Reference 23, to reconstruct the irregular crack morphology using simulation and experimental results. Other research works to estimate crack length and depth have been reported in References 24–28.…”

Section: Introductionmentioning

confidence: 99%

Fast and efficient inversion methods for crack sizing using Bz magnetic signature

Barrarat,

Bensaid,

Rayane

et al. 2023

Int J Numerical Modelling

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Fast estimation is a critical feature of the proposed modeling approach as a “forward” fast solver that has a key role in solving the “inverse” problem involved in crack sizing, especially for real‐time applications. To this end, two different inversion methods have been proposed to estimate the crack depth. The first one uses an interpolation model of the 3D direct model simulation data. The second approach is based on artificial neural networks (ANN). In this article, the rotating uniform eddy current (RUEC) probe is used to detect the normal magnetic component Bz which is defined as the characteristic signal for reconstructing the crack length and depth concurrently. Using the first approach, The Bz characteristic 3D surface is presented, and this can be modeled by a fitted polynomial interpolation equation. Thus, the crack depth can be inverted using this equation referring to the experimental or simulated Bz signal and the crack length. The ANN is outlined to determine the crack depth based on the simulated Bz signature. The move from the first inversion method to the second was flexible and useful, in which the interpolation model is used as a defect signal generator for fast building of a large and efficient database for ANN training. Both of the proposed methods proved the objectivity and accuracy of the inversion results and offered more robust engineering support for automated NDT, reducing production time and increasing productivity.

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Section: Introductionmentioning

confidence: 99%

Fast and efficient inversion methods for crack sizing using Bz magnetic signature

Barrarat,

Bensaid,

Rayane

et al. 2023

Int J Numerical Modelling

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show abstract

“…Alternating current field measurement (ACFM) is an electromagnetic technique used for the detection and sizing of surface breaking cracks in conductive materials and welds [12]. The ACFM probe introduces an electric current into the part and measures the associated electromagnetic fields close to the surface.…”

Section: Introductionmentioning

confidence: 99%

Quantitative Shape Discrimination of Metal Surface Defects Based on Alternating Current Field Measurement

Song,

Hou,

Jiang

2023

IEEE Access

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Quantitative evaluation of defects is an important research topic in non-destructive testing. In this paper, a quantitative evaluation method for the shape of metal surface defects based on alternating current field measurement technology is proposed. The finite element numerical method is used to simulate the electric field and magnetic field environment of the test system. The rectangular probe structure is used to scan the surface of measured object according to designed strategy, and the specific shape of defects is quantitatively identified according to the obtained magnetic field signal. The results show that there are significant differences in sensitivity of eddy current magnetic fields in different directions to defect shapes, and eddy current magnetic fields in same direction are also specific for different forms of defects. The symmetry of surface defects can be determined and the cross-sectional shape of defects can be quantitatively analyzed by measuring the magnetic field B x scanning curve group. The surface shape of defect can be identified quantitatively by the B z scanning curve group after the extraction of characteristic values and proper data processing. This method provides a convenient, simple, and high precision noncontact detection method, which improves the integrity evaluation ability of metal structural parts.INDEX TERMS Non-destructive testing, alternating current field, defect shape, quantitative discrimination

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Crack Orientation Determination of 304 Austenitic Stainless Steel Based on Alternating Current Field Measurement

Yan

Wan

et al. 2022

J Nondestruct Eval

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Determination of Crack Depth Profile in Cylindrical Metallic Structures, Using Alternating Current Field Measurement Data

Cited by 10 publications

References 21 publications

Fast and efficient inversion methods for crack sizing using Bz magnetic signature

Fast and efficient inversion methods for crack sizing using Bz magnetic signature

Quantitative Shape Discrimination of Metal Surface Defects Based on Alternating Current Field Measurement

Crack Orientation Determination of 304 Austenitic Stainless Steel Based on Alternating Current Field Measurement

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