Effects of installing scheme on the strain measurement accuracy of optical fiber sensors

Guanghui Sui; Li Zhang; Shuang Chen; Hongyang Li

doi:10.1117/12.2519564

14 February 2019 Effects of installing scheme on the strain measurement accuracy of optical fiber sensors

Guanghui Sui, Li Zhang, Shuang Chen, Hongyang Li

Proceedings Volume 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018); 110483Q (2019) https://doi.org/10.1117/12.2519564
Event: 17th International Conference on Optical Communications and Networks (ICOCN2018), 2018, Zhuhai, China

Abstract

Fiber bragg grating has become one of the widely used optical measurement technologies in the field of aviation structure monitoring because of its light weight, high sensitivity and immunity to electromagnetic interference. A strain transfer model is established for the surface attached fiber grating, the function between real strain and sensing strain is obtained. Basing on finite element simulation, strain field distribution of the sensing structure is analyzed and the distribution curve of strain transform rate is drawn. The strain calibration system of fiber grating is built to verify the accuracy of the model. The average error of this model is superior to 5.5% in the measurement range of 0-3000με. The study improves the measurement precision of surface bonded fiber grating sensor, which also provides academic bases and references for the aircraft structural health monitoring.

Citation Download Citation

Guanghui Sui, Li Zhang, Shuang Chen, and Hongyang Li "Effects of installing scheme on the strain measurement accuracy of optical fiber sensors", Proc. SPIE 11048, 17th International Conference on Optical Communications and Networks (ICOCN2018), 110483Q (14 February 2019); https://doi.org/10.1117/12.2519564

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