基于单模-多模-单模光纤的钢筋腐蚀监测技术
作者:
作者单位:

大连理工大学 土木工程学院,辽宁 大连 116024

作者简介:

李 桐(1997—),女,吉林吉林人,大连理工大学硕士生.E-mail:2740629186@qq.com

通讯作者:

李宏男(1957—),男,辽宁沈阳人,大连理工大学教授,博士生导师,博士.E-mail:hnli@dlut.edu.cn

中图分类号:

TU511.3+2

基金项目:

国家自然基金资助项目(51878119);创新研究群体科学基金资助项目(51421064);辽宁省自然科学基金资助项目(2020-MS-121)


Steel Bar Corrosion Monitoring Based on Single Mode-Multimode-Single Mode Optical Fiber
Author:
Affiliation:

School of Civil Engineering, Dalian University of Technology, Dalian 116024, China

Fund Project:

  • 摘要
  • |
  • 图/表
  • |
  • 访问统计
  • |
  • 参考文献
  • |
  • 相似文献
  • |
  • 引证文献
  • |
  • 资源附件
  • |
  • 文章评论
    摘要:

    提出了一种利用单模-多模-单模(SMS)光纤进行钢筋腐蚀监测的方法.首先,采用长度分别为2、3、4 cm的3组无芯光纤(NCF)作为多模光纤,制备单模-多模-单模(SMS)光纤传感器;然后,将贴有SMS光纤传感器的钢筋置于质量分数为3.5%的NaCl溶液中进行腐蚀,并用光谱仪实时监测钢筋腐蚀过程中SMS光纤光谱的变化,同时采用开路电位和线性极化阻抗测量钢筋腐蚀电位和腐蚀电流密度,计算钢筋累积腐蚀量.结果表明:钢筋腐蚀量与特征波长的偏移量呈3次函数关系,SMS光纤监测钢筋腐蚀的灵敏度随着多模光纤长度的增加而提高,且随着腐蚀时间的增加而先增大后减小.

    Abstract:

    A method of steel bar corrosion monitoring used single mode-multimode-single mode optical fiber was proposed. Firstly, three lengths of non-core fiber (NCF) were used as multimode fiber to make SMS optical fiber sensor, including 2 cm, 3 cm and 4 cm. Then, the fiber was directly placed on the polished side surface of a steel bar, and immersed in 3.5% NaCl solution for corrosion test. The change of light spectra was continuously monitored with an optical spectral analyzer (OSA), and the corrosion potential and corrosion current density of steel bar was measured with open circuit potential and linear polarization resistance, respectively, based on which the accumulative corrosion-induced mass loss of steel bar was calculated. Results indicate that a cubic relationship is present between the mass loss of steel bar and the change in the characteristic wavelength of SMS optical fiber. The sensitivity of SMS optical fiber for corrosion monitoring increases with an increase of the length of the multimode fiber segment, while it first increases and then decreases with the increase of corrosion time.

    参考文献
    相似文献
    引证文献
引用本文

李桐,唐福建,李宏男.基于单模-多模-单模光纤的钢筋腐蚀监测技术[J].建筑材料学报,2022,25(4):434-440

复制
分享
文章指标
  • 点击次数:
  • 下载次数:
  • HTML阅读次数:
  • 引用次数:
历史
  • 收稿日期:2020-12-20
  • 最后修改日期:2021-03-02
  • 录用日期:
  • 在线发布日期: 2022-04-30
  • 出版日期: