Fiber bragg grating-based fabry-perot interferometer sensor for damage detection on thin aluminum plate

Nurazima, Ismail and Z. M., Hafizi and Ooi, Cheong-Weng and Muhammad Khairol Annuar, Zaini and Che Ku Eddy Nizwan, Che Ku Husin and Lim, Kok-Sing and Harith, Ahmad (2020) Fiber bragg grating-based fabry-perot interferometer sensor for damage detection on thin aluminum plate. IEEE Sensors Journal, 20 (7). pp. 3564-3571. ISSN 1530-437X. (Published)

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Abstract

Structural Health Monitoring of engineering structures has become an essential measure for the prevention of catastrophic failures. This study presented a feasibility study of Fiber Bragg Grating-based Fabry-Perot interferometer (FBG-FPI) sensor for damage detection on an aluminum plate, by acoustic Lamb wave technique. In the investigation, a rectangular damage slot was introduced to the plate, at 15 cm from the actuator. Two FBG-FPI sensors were surface-mounted on the aluminum plate for the detection. In the analysis, we observed an additional wave packet with attenuated amplitude and time delay in the time-domain signal for the defect plate. Similar features are observed in the time-frequency spectrograms and they are important signatures that can be used for detecting the defect. The findings show the applicability of FBG-FPI sensor for damage detection on a thin-walled metallic structure.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Structural health monitoring; Lamb wave; FBG-FPI sensor; Signal processing; Strain sensing
Subjects:	T Technology > TJ Mechanical engineering and machinery T Technology > TK Electrical engineering. Electronics Nuclear engineering T Technology > TL Motor vehicles. Aeronautics. Astronautics
Faculty/Division:	Institute of Postgraduate Studies Faculty of Mechanical Engineering
Depositing User:	Mrs Norsaini Abdul Samat
Date Deposited:	07 Jul 2020 01:58
Last Modified:	07 Jul 2020 01:58
URI:	http://umpir.ump.edu.my/id/eprint/28671
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