Experimental research on fiber Bragg grating sensor in high speed penetration damage monitoring

Ao Zhang; Ruiyan Li; Yisong Zhang; Huajie Wu; Jun Shen; Ying Mei; Rui Du; Xuechao Tian

doi:10.1117/12.3023579

18 March 2024 Experimental research on fiber Bragg grating sensor in high speed penetration damage monitoring

Ao Zhang, Ruiyan Li, Yisong Zhang, Huajie Wu, Jun Shen, Ying Mei, Rui Du, Xuechao Tian

Proceedings Volume 13104, Advanced Fiber Laser Conference (AFL2023); 131044E (2024) https://doi.org/10.1117/12.3023579
Event: Advanced Fiber Laser Conference (AFL2023), 2023, Shenzhen, China

Abstract

This paper aims to realize the structural safety monitoring of protective engineering by conducting experimental research on the application of fiber optic grating sensors in high-speed penetration and damage monitoring. The study designs a miniaturized flexible fiber optic grating strain sensor for dynamic strain measurement during high-speed penetration and damage of the target body by projectiles, and verifies its measurement performance by comparing it with strain gauges. The experimental results demonstrate that the dynamic strain measurement results of the fiber optic grating strain sensor during high-speed penetration and damage are consistent with those of the strain gauges and the actual situation. The fiber optic grating strain sensor can achieve dynamic strain measurement during high-speed penetration and damage processes. Moreover, the variance of strain measurement results from the fiber optic grating strain sensors is much smaller than that of the strain gauges. This study validates that fiber optic grating strain sensors have the advantages of convenient installation, suitability for embedding, no need for electrical power, safety against explosions, immunity to electromagnetic interference, and strong environmental adaptability. They provide comparable results to strain gauges for measuring highspeed dynamic strains while overcoming the challenges associated with strain gauge installation difficulties, susceptibility to damage during embedding, high grounding requirements, poor environmental adaptability, and high surface bonding requirements. Therefore, fiber optic grating strain sensors are an important new technological approach that can replace strain gauges in future safety and health monitoring of protective engineering projects during wartime.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Ao Zhang, Ruiyan Li, Yisong Zhang, Huajie Wu, Jun Shen, Ying Mei, Rui Du, and Xuechao Tian "Experimental research on fiber Bragg grating sensor in high speed penetration damage monitoring", Proc. SPIE 13104, Advanced Fiber Laser Conference (AFL2023), 131044E (18 March 2024); https://doi.org/10.1117/12.3023579

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KEYWORDS

Fiber optics sensors

Fiber Bragg gratings

Sensors

Fiber optics

Optical gratings

Fiber optics tests

Engineering

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