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首页> 外文期刊>Optical engineering >Design of three-direction strain sensor with big measurement range for structural health monitoring
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Design of three-direction strain sensor with big measurement range for structural health monitoring

机译：用于结构健康监测的大量程三向应变传感器设计

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摘要

A design method of a three-direction double-loop strain sensor for two-dimensional (2-D) strain is proposed and analyzed. The strain sensor is made up of three sensing arms and each arm is made of fiber Bragg gratings (FBG) sensor surface glued on titanium alloy substrate. The substrate has double loops to improve the sensor's measurement range. The strain sensor is unique in that by designing three single arms of strain sensors in different direction, a 2-D strain's maximum strain value and direction can be precisely determined. In comparison with common unidirectional strain sensor, this has great value for structural health monitoring. With finite element analysis and measurement demonstration, it is shown the measurement range of the strain sensor is increased by seven times compared with normal FBG sensor. The strain sensor's measurement range can reach 1% (±5000 με) with accuracy of 0.6%. An accurate and real-time monitoring system based on the sensor is presented, which demonstrated the sensor's fast speed and high reliability.
机译：提出并分析了二维（2-D）应变的三向双环应变传感器的设计方法。应变传感器由三个传感臂组成，每个臂由粘合在钛合金基板上的光纤布拉格光栅（FBG）传感器表面制成。基板具有双环以改善传感器的测量范围。应变传感器的独特之处在于，通过设计不同方向的三个应变传感器单臂，可以精确确定二维应变的最大应变值和方向。与普通的单向应变传感器相比，这对于结构健康监测具有重要的价值。通过有限元分析和测量演示，表明应变传感器的测量范围是普通FBG传感器的七倍。应变传感器的测量范围可以达到1％（±5000με），精度为0.6％。提出了一种基于传感器的精确实时监控系统，证明了该传感器的快速性和高可靠性。

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  • 来源
    《Optical engineering》 |2018年第6期|067104.1-067104.7|共7页
  • 作者

    Yu Guo; Xingying Zhu; Yi Ni;

  • 作者单位

    Jiangnan University, School of Internet of Things Engineering, Wuxi, China,Nanjing University, School of Engineering and Applied Sciences, Microwave Photonics Technology Laboratory, Nanjing, China;

    Jiangnan University, School of Internet of Things Engineering, Wuxi, China;

    Jiangnan University, School of Internet of Things Engineering, Wuxi, China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    three-direction; strain sensor; double loops; structural health monitoring; fiber Bragg gratings;

    机译：三向应变传感器双循环;结构健康监测;布拉格光纤光栅;

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