Influence of layered structure for surface-bonded FBG sensor on measured strain

WU Ru-jun; ZHENG Bai-lin; FU Kun-kun; HE Peng-fei; TAN Yue-gang

doi:10.3788/OPE.20142212.3183

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Influence of layered structure for surface-bonded FBG sensor on measured strain

更新时间：2020-08-13

- Influence of layered structure for surface-bonded FBG sensor on measured strain
- Optics and Precision Engineering Vol. 22, Issue 12, Pages: 3183-3190(2014)
- 作者机构：
  
  1. 同济大学航空航天与力学学院上海,200092
  2. 武汉理工大学机电工程学院,湖北武汉,430070
  3. 哈尔滨船舶锅炉涡轮机研究所,黑龙江哈尔滨,150078
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20142212.3183
  CLC： TH823;TN253
- Received：04 May 2014，
  
  Revised：20 June 2014，
  
  Published：25 December 2014
- 稿件说明：
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吴入军, 郑百林, 付昆昆等. 表面粘贴式光纤布拉格光栅传感器层状结构对测量应变的影响[J]. 光学精密工程, 2014,22(12): 3183-3190

WU Ru-jun, ZHENG Bai-lin, FU Kun-kun etc. Influence of layered structure for surface-bonded FBG sensor on measured strain[J]. Editorial Office of Optics and Precision Engineering, 2014,22(12): 3183-3190
吴入军, 郑百林, 付昆昆等. 表面粘贴式光纤布拉格光栅传感器层状结构对测量应变的影响[J]. 光学精密工程, 2014,22(12): 3183-3190 DOI： 10.3788/OPE.20142212.3183.

WU Ru-jun, ZHENG Bai-lin, FU Kun-kun etc. Influence of layered structure for surface-bonded FBG sensor on measured strain[J]. Editorial Office of Optics and Precision Engineering, 2014,22(12): 3183-3190 DOI： 10.3788/OPE.20142212.3183.

摘要

由于用表面粘贴式光纤布拉格光栅(FBG)传感器测量应变时会影响基体的应变分布

本文研究了光纤应变与基体应变之间的关系.针对该类传感器建立了基体与光纤之间的应变传递函数用以修正测量应变

然后研究了FBG传感器与基体之间的相互作用.最后

利用有限元分析(FEA)和实际实验对提出的理论进行了验证.结果显示:光纤应变的FEA解与理论解的误差在5%以内

实验解与理论解的误差在8%以内

结果表明该理论完全满足表面粘贴式FBG传感器的精度要求.另外

分析了黏结层和基体对应变传递的影响

结果显示:平均应变传递率和应变传递率随着基体弹性模量的增加而增加

但它们随着黏结层顶端厚度和底端厚度的增加而逐渐减小.

Abstract

When a surface-bonded Fiber Bragg Grating (FBG) sensor is used to measure the strain of a host material

it will effect the strain distribution of the host material. Therefore

this paper explores the relationship between optical fiber strain and host material strain. A theoretical model of strain transfer of the host material to the optical fiber was presented to modify the measured strain

and the interaction between FBG sensor and host material was considered. Finally

the theoretical predictions proposed in this paper were verified by Finite Element Analysis(FEA) and practical experiments. The results show that the error between FEA and theoretical solution is controlled within 5%

and that between theoretical solution and experimental data is controlled within 8%. These mean that the strain transfer mode satisfies the accuracy requirement of surface-bonded FBG sensors. Moreover

the effects of geometrical and material parameters on the average strain transfer rate and the strain transfer rate were analyzed. The obtained results indicate that the average strain transfer rate and the strain transfer rate increase with the Young's modulus of the host material. However

they decrease with increasing the top thickness and bottom thickness of an adhesive layer.

关键词

Keywords

references

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