Nafiah, Faris and Sophian, Ali and Khan, Md. Raisuddin and Abdul Hamid, Syamsul Bahrin and Zainal Abidin, Ilham Mukriz (2019) Image-based feature extraction technique for inclined crack quantification using pulsed eddy current. Chinese Journal of Mechanical Engineering (English Edition), 32 (1). pp. 1-9. ISSN 1000-9345 E-ISSN 2192-8258
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Abstract
Existing eddy current non-destructive testing (NDT) techniques generally do not consider the inclination angle of inclined cracks, which potentially harms a larger region of a tested structure. This work proposes the use of 2D scan images generated by using pulsed eddy current (PEC) non-destructive testing (NDT) technique in the quantification of the inclination and depth of inclined cracks. The image-based feature extraction technique effectively identifies the crack axis, which consequently enables extraction of features from the extracted linear scans. The technique extracts linear scans from the images to allow the extraction of three novel image-based features, namely the length of extracted linear scans (LLS), the linear scan skewness (LSS), and the highest value on linear scan (LSmax). The correlation of the three features to surface crack inclination angles and depths were analysed and found to be highly dependent on the crack depths, while only LLS and LSS are correlated to the crack inclination angles. © 2019, The Author(s).
| Item Type: | Article (Journal) |
|---|---|
| Additional Information: | 7258/79655 |
| Uncontrolled Keywords: | Pulsed eddy current, 2D scan imaging, Feature extraction, Image processing, Inclined cracks |
| Subjects: | T Technology > TJ Mechanical engineering and machinery > TJ170 Mechanics applied to machinery. Dynamics |
| Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button): | Kulliyyah of Engineering Kulliyyah of Engineering > Department of Mechatronics Engineering |
| Depositing User: | Dr. Md. Raisuddin Khan |
| Date Deposited: | 19 Mar 2020 16:01 |
| Last Modified: | 19 Mar 2020 16:02 |
| URI: | http://irep.iium.edu.my/id/eprint/79655 |
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