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Proceedings Paper

Research on fiber optic impact load localization based on honeycomb layout and fractal filtering principle
Author(s): Hongyu Jia; Jie Zeng; Ke Wang; Xiaohua Guo; Xiaojing Gong; Junsong Yu; Yu Li
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Paper Abstract

Aiming at the impact damage monitoring requirements of aircraft fuselage and wing structure, in this paper, a fast loading identification method based on fiber Bragg grating (FBG) sensor honeycomb layout form is proposed. Firstly, the FBG honeycomb topology network is constructed, which has good scalability and high monitoring efficiency. Secondly, the impact response signal of fiber grating is processed by fractal filter method, then the energy amplitude of the fifth order wavelet transform is chosen as the characteristic parameter of the impact response. Thirdly, a FBG impact response model is established by using a few prior samples. On that basis, according to the location feature of the fiber sensors, a cell location and coordinate location method based on honeycomb cell is proposed to realize fast impact location for four edges clamped plate structures. The research shows that in a random honeycomb monitoring unit which side length is 250mm, 9 randomly chosen simulated impact points are identified with an average error of about 20mm. This method does not require a large number of prior samples, and is suitable for the conventional low speed fiber grating sampling mode. It has excellent environment adaptability and fast response ability.

Paper Details

Date Published: 10 January 2018
PDF: 11 pages
Proc. SPIE 10618, 2017 International Conference on Optical Instruments and Technology: Advanced Optical Sensors and Applications, 106180A (10 January 2018); doi: 10.1117/12.2295290
Show Author Affiliations
Hongyu Jia, Nanjing Univ. of Aeronautics and Astronautics (China)
Jie Zeng, Nanjing Univ. of Aeronautics and Astronautics (China)
Ke Wang, Shanghai Institute of Spacecraft Equipment (China)
Xiaohua Guo, Nanjing Engineering Institute of Aircraft Systems (China)
Xiaojing Gong, Univ. de Toulouse, Institut Clément Ader, CNRS (France)
Junsong Yu, Nanjing Univ. of Aeronautics and Astronautics (China)
Yu Li, Shanghai Institute of Spacecraft Equipment (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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