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Proceedings Paper

Characterization of dynamic strain induced by drilling carbon fiber reinforced polymers using optical frequency-domain reflectometry
Author(s): Pingyu Zhu; Yongjing Li; Yetian Wang; Xiaopeng Sun; Marcelo A. Soto
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Paper Abstract

The use of a distributed optical fiber sensor based on optical frequency-domain reflectometry (OFDR) is proposed for drilling monitoring of carbon fiber reinforced polymer (CFRP) plates. The OFDR sensor response provides information of the drilling-induced temperature and strain over the CFRP plate within a 2D area closely located to the drilled hole. The different stages of the drilling process can be easily identified over time. In addition, a time-frequency analysis based on short-time Fourier transform allows the monitoring of the dynamic strain spectral content generated over the CFRP plate during drilling. Besides the spectral components resulting from the spindle rotation speed of the drill, this analysis allows for the detection of eventual microcracks and delamination of the CFRP plate, as experimentally verified.

Paper Details

Date Published: 10 January 2018
PDF: 4 pages
Proc. SPIE 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications, 1061806 (10 January 2018); doi: 10.1117/12.2295129
Show Author Affiliations
Pingyu Zhu, Guangzhou Univ. (China)
Yongjing Li, Guangzhou Univ. (China)
Yetian Wang, Guangzhou Univ. (China)
Xiaopeng Sun, Guangzhou Univ. (China)
Marcelo A. Soto, École Polytechnique Fédérale de Lausanne (Switzerland)


Published in SPIE Proceedings Vol. 10618:
2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications
Xuping Zhang; Hai Xiao; Francisco Javier Arregui; Liquan Dong, Editor(s)

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