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Pulsed eddy current imaging of inclined surface cracks

Nafiah, Faris and Sophian, Ali (2017) Pulsed eddy current imaging of inclined surface cracks. Indonesian Journal of Electrical Engineering and Informatics, 5 (4). pp. 309-316. ISSN 2089-3272

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Abstract

Inclined fatigue cracks can potentially cause severe damage to metallic structures as they affect larger region in the tested structure compared to crack perpendicular to the sample surface. The abilitiy to detect and characterize such cracks is paramount in non-destructive testing (NDT). Pulsed eddy current testing (PEC) is known to offer a broadband of excitation frequencies, which in conjuction with C-scan imaging, may offer discrimination of inclination angles of cracks. Finite element modelling (FEM) was carried out to study the effects of different crack inclination angles, while experimental results were used to verify the FEM results. Selection of both time and frequency domain features for C-scan image construction was also presented, where C-scan images of peak value and amplitude at 200 Hz were shown to be potentially capable in determining different inclination angles. Nevertheless, between these two signal teatures, the amplitude at 200 Hz was found to be more effective in the discriminataion of inclined cracks.

Item Type: Article (Journal)
Additional Information: 7258/60110
Subjects: T Technology > T Technology (General)
T Technology > TJ Mechanical engineering and machinery
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Mechatronics Engineering
Depositing User: Dr Ali Sophian
Date Deposited: 14 Dec 2017 15:27
Last Modified: 19 Jan 2018 14:52
URI: http://irep.iium.edu.my/id/eprint/60110

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