摘要
本文介绍了一种可直接植入缆索结构内部,实现缆索温度、湿度和应变多参量同步监测的新型光纤传感器。采用飞秒光纤光栅无损刻写技术制作缆索监测传感光纤,大幅提升了传感器耐久性。研发了基于聚酰亚胺套管的增敏型湿度传感器,大幅提升传感器测量灵敏度。提出了基于螺旋铠装+不锈钢套管的双层光纤传感器封装保护方案。研究了传感光纤从缆索锚头区域引出工艺,并开展了缆索试验研究,验证了本文研发的缆索监测多参量光纤传感器在实际缆索样品应用中的效果。
This paper introduces a new fiber optic sensor that can be directly implanted inside the cable structure and realize the simultaneous monitoring of cable temperature,humidity and strain.Femtosecond fiber grating non-destructive inscription technology is used to fabricate the sensing optical fiber grating for cables,which greatly improves the durability of the sensor.A sensitized humidity sensor based on polyimide sleeve is developed to substantially improve the sensor measurement sensitivity.A double-layer fiber optic sensor encapsulation protection scheme based on spiral armoring and stainlesssteel tube is proposed.The extracting process of optical sensing fiber from the anchor area of cable is studied,and a cable test study is carried out to verify the effectiveness of the cable monitoring multiparameter fiber optic sensor developed in this paper in practical applications.
作者
张东昱
刘高
张晓宇
徐金龙
张俊家
ZHANG Dongyu;LIU Gao;ZHANG Xiaoyu;XU Jinlong;ZHANG Junjia(School of Civil Engineering,Harbin Institute of Technology,Harbin,150090,China;School of Civil Engineering,Southeast University,Nanjing,211189,China;National Engineering Research Centre for the Construction of Long Highway Bridges of CCCC,Beijing,100120,China;Wuhan R&D Center,Hubei Sanjiang Space Hongfeng Control Equipment Co.Ltd.,Wuhan 430400,China)
出处
《现代交通与冶金材料》
CAS
2024年第5期69-74,共6页
Modern Transportation and Metallurgical Materials
基金
国家重点研发计划资助项目(2022YFB3706704)
中交集团院士专项项目(YSZX-01-2022-01-B)。
关键词
缆索
结构健康监测
智能缆索
光纤传感器
多参量传感
cables
structural health monitoring
intelligent cable
fiber optic sensor
multi-parametric sensing
