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Optics-Based Strain Sensing System

机译：基于光学的应变传感系统

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摘要

An optics-based strain sensing system is being developed for quazi-distributed strain sensing in locations and environments that are not accessible to conventional strain sensors. The system comprises an Optical Interrogator that has been designed and constructed by Southern Photonics [1], and optical fibre coupled Bragg grating strain sensors. It has been tested using commercial fibre Bragg gratings [2] that were attached to 2 samples of 316 grade stainless steel and cycled in strain and temperature using an Instron mechanical testing machine and temperature controlled cabinet. The results have been compared to the performance of conventional electrical resistance strain gauges. Pairs of fibre Bragg gratings were simultaneously interrogated at 1540 and 1550 nm centre wavelengths to demonstrate the ability of the system to use multiple sensors for quazi-distributed sensing and temperature compensation. The Optical Interrogator resolution is approximately 4 microstrains, accounting for longer term temperature drift, and it is capable of resolving dynamic strains at rates of up to 90 Hz.
机译：正在开发一种基于光学的应变传感系统，用于在常规应变传感器无法访问的位置和环境中进行准分布式应变传感。该系统包括由Southern Photonics [1]设计和制造的光学询问器，以及与光纤耦合的布拉格光栅应变传感器。它已使用商用光纤布拉格光栅[2]进行了测试，该光栅附接到2个316级不锈钢样品上，并使用Instron机械测试机和温度控制柜在应变和温度下循环。将结果与常规电阻应变仪的性能进行了比较。在1540和1550 nm的中心波长处同时询问了成对的光纤布拉格光栅，以证明该系统具有使用多个传感器进行准分布式传感和温度补偿的能力。光学询问器的分辨率约为4个微应变，这说明了长期的温度漂移，并且能够以高达90 Hz的速率解决动态应变。

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  • 来源
  • 会议地点 Wellington(NZ);Wellington(NZ)
  • 作者

    K. J. Stevens; G. V. M. Williams; I. Monfils; D. Hirst; P. Wagner; S.G. Raymond; J. W. Quilty; My T. T. Do;

  • 作者单位

    Quest Integrity Group NZL Ltd, P.O. Box 38-096, Lower Hutt 5045, New Zealand,The MacDiarmid Institute for Advanced Materials and Nanotechnology, P.O. Box 600, Wellington New Zealand;

    The MacDiarmid Institute for Advanced Materials and Nanotechnology, P.O. Box 600, Wellington New Zealand,Industrial Research Ltd, P.O. Box 31-310, Lower Hutt 5045, New Zealand;

    Southern Photonics Ltd, P.O. Box 1590, Auckland 1590, New Zealand;

    Southern Photonics Ltd, P.O. Box 1590, Auckland 1590, New Zealand;

    Industrial Research Ltd, P.O. Box 31-310, Lower Hutt 5045, New Zealand,University of Applied Science Darmstadt, Haardtring 100, D-64295 Darmstadt;

    Industrial Research Ltd, P.O. Box 31-310, Lower Hutt 5045, New Zealand;

    Industrial Research Ltd, P.O. Box 31-310, Lower Hutt 5045, New Zealand;

    Industrial Research Ltd, P.O. Box 31-310, Lower Hutt 5045, New Zealand;

  • 会议组织
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类 工程材料一般性问题;
  • 关键词

    fibre bragg grating; strain sensors; strain tensor; optical interrogator;

    机译：光纤布拉格光栅应变传感器张力张量光学询问器;

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