Low velocity impact localization of carbon fiber composite laminates based on fsFBG

Xinlong Chang; Chaofan Sun; Chongyang Qi; Youhong Zhang; Yi Guo; Hao You; Jiewei Chen; Jiaxiang Li

doi:10.1117/12.2686743

6 August 2023 Low velocity impact localization of carbon fiber composite laminates based on fsFBG

Xinlong Chang, Chaofan Sun, Chongyang Qi, Youhong Zhang, Yi Guo, Hao You, Jiewei Chen, Jiaxiang Li

Proceedings Volume 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023); 127813I (2023) https://doi.org/10.1117/12.2686743
Event: 2023 International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 2023, Guangzhou, JS, China

Abstract

A low-speed impact positioning technique for composite laminates based on wavelet packet analysis theory is suggested to meet the structural health monitoring demands of aerospace carbon fiber composites. The impact response signal is obtained using this way via the fsFBG sensor. The wavelet packet energy spectrum is extracted using wavelet packet analysis to create the impact point eigenvector and impact position information matrix. The maximal inner product is used to determine the composite laminates' low-speed impact location. In this research, fsFBG sensors are mounted on the surface of carbon fiber composite laminates, impact points in the center region are divided, low-speed impact tests are performed on each impact point, and an algorithm is used to forecast the position of the impact point is developed. The results of the tests reveal that this technology can precisely determine the low-speed impact location of carbon fiber composite laminates.

(2023) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Xinlong Chang, Chaofan Sun, Chongyang Qi, Youhong Zhang, Yi Guo, Hao You, Jiewei Chen, and Jiaxiang Li "Low velocity impact localization of carbon fiber composite laminates based on fsFBG", Proc. SPIE 12781, International Conference on Optoelectronic Information and Functional Materials (OIFM 2023), 127813I (6 August 2023); https://doi.org/10.1117/12.2686743

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KEYWORDS

Wavelets

Sensors

Composites

Carbon fibers

Matrices

Wavelet packet decomposition

Analytical research

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