表面粘贴式光纤布拉格光栅传感器界面传递机制研究

An investigation of interface transferring mechanism of surface-bonded fiber Bragg grating sensors.

作者信息

Wu Rujun, Fu Kunkun, Chen Tian

机构信息

School of Mechanical Engineering, Shanghai Dianji University, Shanghai 201306, People's Republic of China.

School of Aerospace, Mechanical and Mechatronic Engineering, University of Sydney, Sydney, NSW 2006, Australia.

出版信息

Rev Sci Instrum. 2017 Aug;88(8):085001. doi: 10.1063/1.4997069.

DOI:10.1063/1.4997069

PMID:28863680

Abstract

Surface-bonded fiber Bragg grating sensor has been widely used in measuring strain in materials. The existence of fiber Bragg grating sensor affects strain distribution of the host material, which may result in a decrease in strain measurement accuracy. To improve the measurement accuracy, a theoretical model of strain transfer from the host material to optical fiber was developed, incorporating the influence of the fiber Bragg grating sensor. Subsequently, theoretical predictions were validated by comparing with data from finite element analysis and the existing experiment [F. Ansari and Y. Libo, J. Eng. Mech. 124(4), 385-394 (1998)]. Finally, the effect of parameters of fiber Bragg grating sensors on the average strain transfer rate was discussed.

摘要

表面粘贴式光纤布拉格光栅传感器已广泛应用于材料应变测量。光纤布拉格光栅传感器的存在会影响主体材料的应变分布，这可能导致应变测量精度降低。为提高测量精度，建立了一个考虑光纤布拉格光栅传感器影响的从主体材料到光纤的应变传递理论模型。随后，通过与有限元分析数据和现有实验数据[F. Ansari和Y. Libo，《工程力学杂志》124(4)，385 - 394(1998)]进行比较，验证了理论预测结果。最后，讨论了光纤布拉格光栅传感器参数对平均应变传递率的影响。