Development and comprehensive investigation of a lightweight FBG accelerometer for small structure acceleration measurements

Muhammad Rais, Rahim and Hossain, MD Mofazzal and Mohd Firdaus, Hassan (2024) Development and comprehensive investigation of a lightweight FBG accelerometer for small structure acceleration measurements. Measurement Science and Technology, 35 (10). pp. 1-10. ISSN 0957-0233. (Published)

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DOI/Official URL: https://doi.org/10.1088/1361-6501/ad5dea

Abstract

Despite their sensitivity potential, diaphragm-type fiber Bragg grating accelerometers with inertia mass are often too complex and large, limiting their suitability for measuring small structures. Designing a suitable accelerometer for small structures, where its weight must be less than one-tenth of the measured structure, is challenging. This paper introduces a compact, simplified, and fabricable non-inertia mass FBG accelerometer (FBGA-SD), featuring a longer FBG tunnel and a through-hole for monitoring. The proposed FBGA-SD is 16 × 16 × 10 mm, weighing 4 grams. Numerical and experimental results show good agreement, though amplitude sensitivity differs by 50%. The experimental sensitivity is 9.64 × 10−2 pm g−1, while transient response analysis gives 4.79 × 10−2 pm g−1, valid for 10–100 Hz excitation frequencies and up to 10.5 m s−2 base acceleration.

Item Type:	Article
Additional Information:	Indexed by Scopus
Uncontrolled Keywords:	Diaphragm-type FBG accelerometer; Vibration; Transient response analysis; Lightweight FBG accelerometer; Non-inertia mass
Subjects:	T Technology > TJ Mechanical engineering and machinery
Faculty/Division:	Institute of Postgraduate Studies Faculty of Mechanical and Automotive Engineering Technology
Depositing User:	Dr. Mohd Firdaus Hassan
Date Deposited:	15 Aug 2024 03:44
Last Modified:	15 Aug 2024 03:44
URI:	http://umpir.ump.edu.my/id/eprint/42359
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