Eddy Current Modeling of Narrow Cracks in Planar-Layered Metal Structures

Miorelli, Roberto; Reboud, Christophe; Lesselier, Dominique; Theodoulidis, Theodoros

doi:10.1109/tmag.2012.2197403

Cited by 25 publications

(13 citation statements)

References 19 publications

(36 reference statements)

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“…9a shows the axial direction line scan and top view of windings. The block diagram of ECT excitation probe (a) ECT probe and PCB lines coil array sensor [32], (b) The designed ECT probe in front view [89]…”

Section: Air Coil Probementioning

confidence: 99%

See 1 more Smart Citation

Review on system development in eddy current testing and technique for defect classification and characterization

Ali

Abdalla

Rifai

et al. 2017

IET Circuits, Devices & Systems

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Eddy current testing (ECT) is one of the non-destructive evaluation techniques widely used, especially in oil and gas industries. It characterized noisy data to the less-than-perfect detection and as an indication of serious false alarm problem. However, not many researchers have described in detail the intelligent ECT crack detection system. This paper introduces a review of ECT technique and factors that affect the signal fundamental according to the hardware and software development. First, describe the magnetic excitation resources including the sinusoidal and pulse exciting signal. Second, outlines explanation about the ECT probe. The explanations are more about the probes development for air core probe and giant magnetoresistance probe. Third, there is discussion on ECT circuit that used including ECT system, ECT rotating magnetic field and application measurement for optimal control parameters. The defect in characterizations and measurement are discussed on the fourth part of this paper. The fourth part discusses the ECT lift-off compensation including the lift-off and application of intelligent technique in ECT. The limitations of lift-off for coil probe and compensation techniques also discussed in this part. Finally, a comprehensive review of previous studies on the application of intelligent ECT crack detection in nondestructive ECT is presented.

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Section: Air Coil Probementioning

confidence: 99%

“…Boundary element model is suitable for eddy current inspection with affecting planar stratified in several cracked smooth flow. Selected cracked can be very small and their orientation is either be parallel or octagon [89]. Magnetic field and one error‐free interconnects will be detected by sensor‐array planar coil using the ECT.…”

Section: Ect Probementioning

confidence: 99%

Review on system development in eddy current testing and technique for defect classification and characterization

Ali

Abdalla

Rifai

et al. 2017

IET Circuits, Devices & Systems

View full text Add to dashboard Cite

show abstract

“…By combining the above discretization and the weak form (5) and (6), we obtain the following discretized model:…”

Section: Numerical Modelmentioning

confidence: 99%

Solution and Extension of a New Benchmark Problem for Eddy-Current Nondestructive Testing

et al. 2015

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We report on further measurements and a numerical solution for a proposed benchmark problem involving an eddy-current nondestructive evaluation configuration. This is a simplified version of the inspection of fastener holes in aircraft structures, comprising combinations of plates with through holes and a crack. Previously, only line (B-scan) data were provided for the coil impedance, while in this paper, we provide precision surface (C-scan) data as well as details on the evaluation of the critical parameters of the problem. Furthermore, the experimental data are cross validated with numerical ones using a model that combines an integral formulation and the FEM approach.

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“…However, in the production and use of metal components, it is easy to cause various defects and damage to the surface and interior of metal components. Especially for some in-service metal component equipment, when the defects are serious, they lead to the scrapping of whole components, causing major safety problems [3,4]. Therefore, in order to ensure the safety, integrity, and reliability of metal components, as well as the major products and facilities based on them, testing of their reliability must be carried out.…”

Section: Introductionmentioning

confidence: 99%

Classification and Quantitative Evaluation of Eddy Current Based on Kernel-PCA and ELM for Defects in Metal Component

Deng

Bao

et al. 2019

Metals

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Eddy current testing technology is widely used in the defect detection of metal components and the integrity evaluation of critical components. However, at present, the evaluation and analysis of defect signals are still mostly based on artificial evaluation. Therefore, the evaluation of defects is often subjectively affected by human factors, which may lead to a lack in objectivity, accuracy, and reliability. In this paper, the feature extraction of non-linear signals is carried out. First, using the kernel-based principal component analysis (KPCA) algorithm. Secondly, based on the feature vectors of defects, the classification of an extreme learning machine (ELM) for different defects is studied. Compared with traditional classifiers, such as artificial neural network (ANN) and support vector machine (SVM), the accuracy and rapidity of ELM are more advantageous. Based on the accurate classification of defects, the linear least-squares fitting is used to further quantitatively evaluate the defects. Finally, the experimental results have verified the effectiveness of the proposed method, which involves automatic defect classification and quantitative analysis.

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Eddy Current Modeling of Narrow Cracks in Planar-Layered Metal Structures

Cited by 25 publications

References 19 publications

Review on system development in eddy current testing and technique for defect classification and characterization

Review on system development in eddy current testing and technique for defect classification and characterization

Solution and Extension of a New Benchmark Problem for Eddy-Current Nondestructive Testing

Classification and Quantitative Evaluation of Eddy Current Based on Kernel-PCA and ELM for Defects in Metal Component

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