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Proceedings Paper

Research on impact energy measurement based on FBG and damping attenuation
Author(s): Jian-ming Zhou; Jun-hui Hu; Jin-ying Fan; Zi-xiong Qin
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Paper Abstract

A demodulation based on the principle of fiber Bragg grating edge filter method is used to measure impact energy of acrylic plate (PMMA) and aluminum plate in this paper. A new demodulation method based on damping attenuation principle is proposed. Fiber Bragg grating sensing system is built in the experiment. The complex vibration wave generated by impact energy is processed by using the envelope of peak value in MATLAB. The experimental results show that using the time length corresponding to the peak attenuation of 10% as the demodulation basis has a higher Goodness of fit. The linear fitness of PMMA plate and aluminium plate is 0.94 and 0.89, respectively. At the same time, it is concluded that this method can be used to preliminarily determine whether the plate is viscoelastic or not. This is a new potential demodulation method for practical impact energy detection based on fiber Bragg grating.

Paper Details

Date Published: 18 December 2019
PDF: 6 pages
Proc. SPIE 11340, AOPC 2019: Optical Fiber Sensors and Communication, 113400P (18 December 2019); doi: 10.1117/12.2542975
Show Author Affiliations
Jian-ming Zhou, Guangxi Normal Univ. (China)
Jun-hui Hu, Guangxi Normal Univ. (China)
Jin-ying Fan, Guangxi Normal Univ. (China)
Zi-xiong Qin, Guangxi Normal Univ. (China)

Published in SPIE Proceedings Vol. 11340:
AOPC 2019: Optical Fiber Sensors and Communication
Jie Zhang; Songnian Fu; Jun Yang, Editor(s)

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