Surface Profile Reconstruction of Complex Cracks Using the Signals of Rotating Eddy Current Testing Through the Eddy Current Imaging Method

Ge, Jiuhao; Hu, Bo; Yang, Chenkai; Yu, Fanwei; Yusa, Noritaka

doi:10.1109/tie.2022.3206746

Cited by 7 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Other studies apply the REC technique for the detection of complex cracks characterized by different shapes; for example, in [27], [28], the authors investigate the EC image method, that represents the defect as current dipoles [29], to improve the Signal to Noise Ratio (SNR) of defect images obtained with a REC technique. In [30], a novel differential ECT probe is proposed, in which the EC rotation is realized by means of four-square driver coils.…”

Section: Introductionmentioning

confidence: 99%

An Eddy Current Probe for the Detection of Subsuperficial Defects of Any Orientation

Carere,

Sardellitti,

Bernieri

et al. 2024

IEEE Trans. Instrum. Meas.

View full text Add to dashboard Cite

The paper introduces a novel 4-coils probe designed for Eddy Current Non-Destructive Testing on conductive materials. The key innovation lies in its capability to identify small surface and subsurface cracks regardless of their orientation. This is achieved through a suitable probe developed using two pairs of exciting coils that allow to generate two orthogonal magnetic fields. Using two excitation currents with an amplitude modulation approach, a rotation of the eddy currents induced in the conductive sample is obtained. This novel approach ensures effective detection of deep and arbitrarily oriented cracks. Both numerical tests and experimental evaluations were employed to assess the performance of the proposed probe. The probe's effectiveness was particularly observed in detecting a buried crack measuring 5 mm in length, 1 mm in height, and 0.1 mm in thickness at depths up to 3 mm in an aluminum plate. The results demonstrated the robustness of the probe's detection capability, affirming its potential as a reliable tool for nondestructive testing in industrial applications.

show abstract