首页> 外文期刊>Optical engineering >Degradation of sensing properties of fiber Bragg grating strain sensors in fatigue process of bonding layers
【24h】

Degradation of sensing properties of fiber Bragg grating strain sensors in fatigue process of bonding layers

机译:粘结层疲劳过程中光纤布拉格光栅应变传感器的传感性能下降

获取原文
获取原文并翻译 | 示例
           

摘要

Bonding layers, serving as the strain transmission mediums, may bring undesirable effects to the sensing properties of fiber Bragg grating (FBG) strain sensors during their fatigue process. To analyze the strain sensitivity and the reflected spectrum of FBG strain sensors in different fatigue stages of bonding layers, their strain sensitivities were derived according to strain transfer models. Resorting to T-matrix formalism, the affected reflected spectra were stimulated. Theoretical analysis results show that there is a gradual decline in the strain sensitivity during the stage of fatigue crack initiation, and that significant distortions emerge in the reflected spectrum during the stage of fatigue crack propagation. In addition, a cyclic loading fatigue test was conducted and the phenomenon observed in the test showed a good agreement with the theoretical prediction.
机译:用作应变传递介质的粘结层可能会在疲劳过程中给光纤布拉格光栅(FBG)应变传感器的传感特性带来不良影响。为了分析粘结层不同疲劳阶段的FBG应变传感器的应变敏感性和反射光谱,根据应变传递模型推导了它们的应变敏感性。借助于T-矩阵形式主义,激发了受影响的反射光谱。理论分析结果表明,在疲劳裂纹萌生阶段应变敏感性逐渐降低,在疲劳裂纹扩展阶段反射光谱中出现了明显的畸变。另外,进行了循环载荷疲劳试验,试验中观察到的现象与理论预测吻合良好。

著录项

  • 来源
    《Optical engineering》 |2014年第4期|046102.1-046102.7|共7页
  • 作者单位

    Chongqing University, Sensors and Instruments Research Center, College of Optoelectronic Engineering, The Key Laboratory for Optoelectronic Technology and Systems of Ministry of Education, 174 Shazheng Street, Shapingba, Chongqing 400044, China;

    Chongqing University, Sensors and Instruments Research Center, College of Optoelectronic Engineering, The Key Laboratory for Optoelectronic Technology and Systems of Ministry of Education, 174 Shazheng Street, Shapingba, Chongqing 400044, China;

    Chongqing University, Sensors and Instruments Research Center, College of Optoelectronic Engineering, The Key Laboratory for Optoelectronic Technology and Systems of Ministry of Education, 174 Shazheng Street, Shapingba, Chongqing 400044, China;

    Chongqing University, Sensors and Instruments Research Center, College of Optoelectronic Engineering, The Key Laboratory for Optoelectronic Technology and Systems of Ministry of Education, 174 Shazheng Street, Shapingba, Chongqing 400044, China;

    Chongqing University, Sensors and Instruments Research Center, College of Optoelectronic Engineering, The Key Laboratory for Optoelectronic Technology and Systems of Ministry of Education, 174 Shazheng Street, Shapingba, Chongqing 400044, 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

    fiber Bragg grating; reliability; fatigue; bonding layers; strain sensitivity; reflected spectrum;

    机译:布拉格光纤光栅可靠性;疲劳;粘结层;应变敏感性反射光谱;

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱:kefu@zhangqiaokeyan.com

京公网安备:11010802029741号 ICP备案号:京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有
  • 客服微信

  • 服务号