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AN EVALUATION OF FIBER OPTIC SENSORS

机译：光纤传感器的评估

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摘要

Technologies such fiber optic sensors, initially developed for use in the aerospace industry, are being investigated for their applicability to other markets such as civil engineering infrastructure. This paper investigates the issues of practicality and suitability of using fiber optic Bragg grating sensors as strain gauges in field applications. The main points discussed are the advantages and disadvantages of using fiber optic sensors in comparison with conventional resistance based foil gauges, and how well do the fiber optic sensor readings correlate to foil gauge strain values. Tests were carried out on an aluminum test specimen, two steel straps, and on a full-scale model of a bridge deck incorporating the two steel straps. All of the test members were instrumented with a foil gauge on one side and a fiber optic sensor on the other to allow for a comparison of the strain values.
机译：诸如光纤传感器的技术最初是为航空航天工业开发的，目前正在研究其在其他市场（如土木工程基础设施）中的适用性。本文研究了在现场应用中使用光纤布拉格光栅传感器作为应变仪的实用性和适用性问题。讨论的要点是与传统的基于电阻的箔规相比使用光纤传感器的优缺点，以及光纤传感器读数与箔规应变值的相关程度如何。测试是在铝制试样，两条钢带和装有两条钢带的桥面板的全尺寸模型上进行的。所有测试构件的一侧都配备了箔规，另一侧配备了光纤传感器，以便比较应变值。

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