Investigation on packages of fiber Bragg grating for use as embeddable strain sensor in concrete structure
Investigation on packages of fiber Bragg grating for use as embeddable strain sensor in concrete structure
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DOI：
10.1016/j.sna.2009.10.020
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发表时间：
2010-01-01
影响因子：
4.6
通讯作者：
Dasgupta, K.
中科院分区：
文献类型：
--
作者：
Biswas, P.;Bandyopadhyay, S.;Dasgupta, K.
本文对用于混凝土结构应变传感的光纤布拉格光栅（FBG）的封装技术进行了详细的研究。实验研究了环氧树脂固化不完全引起的应变分布不均匀及其对FBG光谱的影响，并与理论模拟进行了关联。对于一个特定的封装，一个最佳的固化条件已被发现，并显示具有良好的重复性。成功封装的传感器已被嵌入到一个具体的结构和响应已被发现是线性的。并与表面贴装电阻应变片（ERSG）和埋入式EFPI（Extrinsic Fabry Perot Interferometer）光纤传感器在静载条件下的响应进行了比较。该传感器还进行了测试下的动态负载的结构。(C)2009爱思唯尔有限公司版权所有。
The paper covers detailed investigation on encapsulation and packaging of fiber Bragg grating (FBG) for strain sensing of concrete structures in embeddable form. Non-uniform strain distribution due to imperfect curing of the epoxy and its effect on the FBG spectrum has been Studied experimentally and correlated with theoretical simulation. For a specific package, an optimal curing condition has been found and shown to have good repeatability. The successfully packaged sensor has been embedded in a concrete structure and the response has been found to be linear. Response of the sensor under static loading condition is compared With Surface mountable electrical resistance strain gauge (ERSG) and embeddable type EFPI (extrinsic Fabry Perot interferometer) fiber optic sensor. The sensor has also been tested under dynamic loading of the structure. (C) 2009 Elsevier B.V. All rights reserved.