24 October 2017 Research on the novel FBG detection system for temperature and strain field distribution
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Proceedings Volume 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications; 1046403 (2017) https://doi.org/10.1117/12.2281396
Event: Applied Optics and Photonics China (AOPC2017), 2017, Beijing, China
Abstract
In order to collect the information of temperature and strain field distribution information, the novel FBG detection system was designed. The system applied linear chirped FBG structure for large bandwidth. The structure of novel FBG cover was designed as a linear change in thickness, in order to have a different response at different locations. It can obtain the temperature and strain field distribution information by reflection spectrum simultaneously. The structure of novel FBG cover was designed, and its theoretical function is calculated. Its solution is derived for strain field distribution. By simulation analysis the change trend of temperature and strain field distribution were analyzed in the conditions of different strain strength and action position, the strain field distribution can be resolved. The FOB100 series equipment was used to test the temperature in experiment, and The JSM-A10 series equipment was used to test the strain field distribution in experiment. The average error of experimental results was better than 1.1% for temperature, and the average error of experimental results was better than 1.3% for strain. There were individual errors when the strain was small in test data. It is feasibility by theoretical analysis, simulation calculation and experiment, and it is very suitable for application practice.
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Zhi-chao Liu, Zhi-chao Liu, Jin-hua Yang, Jin-hua Yang, } "Research on the novel FBG detection system for temperature and strain field distribution", Proc. SPIE 10464, AOPC 2017: Fiber Optic Sensing and Optical Communications, 1046403 (24 October 2017); doi: 10.1117/12.2281396; https://doi.org/10.1117/12.2281396
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