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Proceedings Paper

Impact and vibration monitoring method of composite flexible structures based on FBG sensor network
Author(s): Jian Kang; Jie Zeng; Xiaohua Guo; Xiaojing Gong; Tongwei Li; Junsong Yu; Kai He
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Paper Abstract

Aiming at the low-speed impact load localization and vibration testing requirements of aerospace composite flexible structure, The Fiber Bragg Grating sensor network monitoring system is established. The increasing sampling technique is used to process the impact response signal, then the generalized cross-correlation delay estimation method is used to extract the time difference relationship between the sensor response signals. On this basis, the rapid identification of the impact position of the composite flexible structure is realized by considering the position information of the sensor comprehensively. The experimental results show that the area of six impact sample points and the specific coordinates of the location can be accurately identify respectively by this method. The average error of the coordinate positioning is about 3cm. The self-vibration mode and the natural frequency of the composite structure are achieved by using Fiber Bragg Grating sensor network monitoring system simultaneously. The finite element model of the composite structure with triangular section is established by using Patran. The natural frequency of the simulation is in good agreement with the experimental result, which proves that the Fiber Bragg Grating sensor has good vibration test performance.

Paper Details

Date Published: 10 January 2018
PDF: 13 pages
Proc. SPIE 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications, 106180U (10 January 2018); doi: 10.1117/12.2295308
Show Author Affiliations
Jian Kang, Nanjing Univ. of Aeronautics and Astronautics (China)
Jie Zeng, Nanjing Univ. of Aeronautics and Astronautics (China)
Xiaohua Guo, Nanjing Engineering Institute of Aircraft Systems (China)
Xiaojing Gong, Univ. de Toulouse, Institut Clément Ader, CNRS (France)
Tongwei Li, Nanjing Engineering Institute of Aircraft Systems (China)
Junsong Yu, Nanjing Univ. of Aeronautics and Astronautics (China)
Kai He, Nanjing Univ. of Aeronautics and Astronautics (China)


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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