Influence of bond layer characteristics on strain sensing properties of FBG sensors

WU Jun; CHEN Wei-min; ZHANG Peng; LIU Li; LIU Hao

doi:10.3788/OPE.20111912.2941

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Influence of bond layer characteristics on strain sensing properties of FBG sensors

Article | 更新时间：2020-08-12

- Influence of bond layer characteristics on strain sensing properties of FBG sensors
- Optics and Precision Engineering Vol. 19, Issue 12, Pages: 2941-2946(2011)
- 作者机构：
  
  1. 重庆大学光电技术及系统教育部重点实验室,重庆 400030
  2. 重庆交通大学西南水运工程科学研究所,重庆 400016
- 作者简介：
- 基金信息：
- DOI：10.3788/OPE.20111912.2941
  CLC： TN253
- Received：22 April 2011，
  
  Revised：22 June 2011，
  
  Published Online：25 December 2011，
  
  Published：25 December 2011
- 稿件说明：
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吴俊, 陈伟民, 章鹏, 刘立, 刘浩. 粘接层弹性模量对光纤Bragg光栅传感器应变传递性能的影响[J]. 光学精密工程, 2011,19(12): 2941-2946

WU Jun, CHEN Wei-min, ZHANG Peng, LIU Li, LIU Hao. Influence of bond layer characteristics on strain sensing properties of FBG sensors[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 2941-2946
吴俊, 陈伟民, 章鹏, 刘立, 刘浩. 粘接层弹性模量对光纤Bragg光栅传感器应变传递性能的影响[J]. 光学精密工程, 2011,19(12): 2941-2946 DOI： 10.3788/OPE.20111912.2941.

WU Jun, CHEN Wei-min, ZHANG Peng, LIU Li, LIU Hao. Influence of bond layer characteristics on strain sensing properties of FBG sensors[J]. Editorial Office of Optics and Precision Engineering, 2011,19(12): 2941-2946 DOI： 10.3788/OPE.20111912.2941.

摘要

考虑光纤Bragg光栅(FBG)粘接层的材料特性会直接影响FBG传感器的应变测量精度

本文根据粘接层应变传递模型

结合应变传递系数

的表达公式

在确定粘接层结构尺寸参数的前提下

仿真分析了粘接层弹性模量对应变传递系数

的影响。分析结果表明

金属材料的应变传递效率明显优于有机胶的应变传递效率。进行了传递效果评价对比试验

结果表明

铅粘接层的应变传递系数维持在0.98左右

环氧树脂粘接层的应变传递系数维持在0.90左右

前者比后者的应变传递效率提高了约8.9%

显示将粘接材料由环氧树脂改进为铅后

可大大提高应变测量的精度

更加充分发挥光纤器件自身优越的应变测量能力。

Abstract

As material characteristics of a bond layer directly affect the measurement accuracy of Fiber Bragg Grating(FBG) strain sensors

this paper simulates the impact of elastic modulus of the bond layer materials on strain transfer coefficient

according to the bond layer strain transfer model and the formula of strain transfer coefficient

under the premise of determining the structure size parameters. The results show that the strain transfer efficiency of metal is superior obviously to that of the organic adhesive.A contrast test is carried out. Test results indicate that the strain transfer coefficient

of the lead maintains a level of 0.98 while that of epoxy maintains about 0.90

and the former's transfer efficiency has increased by 8.9% as compared with that of the latter.By replacing epoxy with the lead

it can greatly improve the strain measurement precision

and can more fully exert fiber optic sensors' strain measurement ability.

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Keywords

references

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