Mohd Mawardi, Saari and Nurul A’in, Nadzri and Mohd Aufa Hadi Putera, Zaini and Mohd Herwan, Sulaiman and Kiwa, Toshihiko (2024) Simulation study of orthogonal eddy current excitation technique for detection of multi-orientation slit. In: 2024 International Conference on System Science and Engineering, ICSSE 2024 , 26 - 28 June 2024 , Hsinchu, Jepun. pp. 1-5.. ISBN 979-835035988-6 (Published)
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Abstract
Identifying crack propagation direction and depth is crucial for steel structure safety. This study explores an orthogonal eddy current excitation technique for detecting multi-orientation slits in mild steels. Using 3-D finite element (FE) simulation, the normal magnetic response Bz distribution induced by orthogonal eddy current excitation is calculated. Two perpendicular inductor arrays mimic orthogonal eddy currents. Artificial vertical, horizontal, 45°, and cross slits on a 12-mm mild steel plate are modeled, and the normal magnetic response contributed by these slits is simulated. Findings show that the orthogonal eddy current excitation technique causes a change in the magnetic field distribution for all types of slits, indicating its ability to resolve any orientation of the slits. Both x- and y-differential signals exhibit similar sensitivity in detecting vertical and horizontal slits. In contrast to the real component of the differential signal, the imaginary components showed a higher normalized differential value due to slits, suggesting a higher detection sensitivity of the differential imaginary components. The orthogonal eddy current induction technique would be a preferable choice to be implemented in an ECT probe.
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Additional Information: | Indexed by Scopus |
| Uncontrolled Keywords: | 3-D finite elements; Crack propagation depth; Crack propagation direction; Current excitation; Differential signal; Eddy-current; Excitation technique; Magnetic response; Simulation studies; Structure safety |
| Subjects: | T Technology > TK Electrical engineering. Electronics Nuclear engineering |
| Faculty/Division: | Faculty of Electrical & Electronic Engineering Institute of Postgraduate Studies |
| Depositing User: | Dr. Mohd Mawardi Saari |
| Date Deposited: | 23 Apr 2025 02:12 |
| Last Modified: | 23 Apr 2025 02:12 |
| URI: | http://umpir.ump.edu.my/id/eprint/44383 |
| Download Statistic: | View Download Statistics |
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