Athermal fibre Bragg grating strain gauge with metal coating in measurement of thermal expansion coefficient

被引：7

作者：

Lo, YL ^{[1
]}

Lin, YC

Chen, YM

机构：

[1] Natl Cheng Kung Univ, Dept Mech Engn, Tainan 70101, Taiwan

[2] Philips Opt Storage, Taipei, Taiwan

来源：

SENSORS AND ACTUATORS A-PHYSICAL | 2005年 / 117卷 / 01期

关键词：

fibre Bragg grating; temperature compensations; athermal strain gauge;

D O I：

10.1016/j.sna.2004.06.017

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

This study presents an athermal strain gauge based on fibre Bragg grating (FBG) in measuring thermal expansion coefficient of a low expansion nickel alloy block for demonstration. In order to design an athermal fibre Bragg grating strain gauge, the metal coating is electroless plated onto an optical fibre to function as a thermal compensator. Therefore, the Bragg wavelength will not shift with the ambient temperature change, and only shift regarding to the mechanical strain onto FBG. In measuring the thermal expansion coefficient of a low expansion nickel alloy block, data are in good agreement between the tests by using the athermal FBG and resistance strain gauge techniques. As a result, the athermal strain gauge based on FBG is demonstrated and feasible for the future applications. (C) 2004 Elsevier B.V. All rights reserved.

引用

页码：103 / 109

页数：7

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