Abstract
Composite materials are widely used in metal coatings to form a series of protective layers. However, fatigue, stress and corrosion can cause several damage modes such as delamination between insulation and metal surface and crack of metal. Such defects will consequently weaken the structure. Hence, it becomes essential to detect and remedy the area non-destructively before it spreads any further. In this paper, a novel of microwave non-destructive testing (NDT) technique for composite coatings is proposed. This technique is based on scanning the surface of the coating with a Complementary Split Ring Resonators (CSRR) with a microstrip patch antenna (MPA). The average value of magnitude S11 is analyzed. Here, a sample (miniature defect) is scanned using CSRR operating at microwave frequencies of 5.3 GHz. Then, the simulation is carried out by using CST Studio Suite. After applying Wavelet transform to the average value of magnitude S11, the surface plot showed significantly better depth resolution. The results reported in this paper proves the advantages of the Wavelet transform to picturize the depth of the defects. The defects’ information can be used to further develop improved methods for maintenance schedule involving significant localized damage and essential for safety studies.
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Acknowledgement
This work was supported by the Ministry of Education Malaysia Fundamental Research Grant Scheme (FRGS) under Grant 203.PELECT.6071430.
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Yee, T.S., Akbar, M.F., Ghazali, N.A., Mohamed, M.F.P. (2022). Defects Detection Using Complementary Split Ring Resonator with Microstrip Patch Antenna. In: Mahyuddin, N.M., Mat Noor, N.R., Mat Sakim, H.A. (eds) Proceedings of the 11th International Conference on Robotics, Vision, Signal Processing and Power Applications. Lecture Notes in Electrical Engineering, vol 829. Springer, Singapore. https://doi.org/10.1007/978-981-16-8129-5_95
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DOI: https://doi.org/10.1007/978-981-16-8129-5_95
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