1. 三峡大学数理学院
2. 三峡大学湖北省弱磁探测工程技术研究中心
纸质出版:2025
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黄江楼, 贺云睿, 王晓龙, 等. 基于超弱光纤光栅的分布式应变传感光缆研究[J]. 传感器与微系统, 2025,(7):14-18+23.
黄江楼, 贺云睿, 王晓龙, 等. 基于超弱光纤光栅的分布式应变传感光缆研究[J]. 传感器与微系统, 2025,(7):14-18+23. DOI: 10.13873/J.1000-9787(2025)07-0014-05.
针对超弱光纤光栅(UW-FBG)传感器阵列线性化封装时存在传递效率低、存在应变死区、易啁啾等问题,提出了一种基于玻璃纤维增强树脂(FRP)的分布式应变传感光缆。理论分析UW-FBG的分布式应变传感原理,建立了层绞式FRP光缆的应变传递模型,仿真分析了光纤/FRP—钢索—护套结构的应变传递效率。将0.2 m间距的UW-FBG阵列预处理后,与玻璃纤维热拉挤制作成直径1.0 mm的FRP传感光纤,经钢索加捻后,挤压护套成型。对光缆的温度特性、拉伸特性进行了标定,并制作混凝土试件进行静压测试。结果表明:该光缆的温度灵敏度为22.3 pm/℃
应变灵敏度1.1 pm/10
-6
应变线性误差小于1.4%
重复性误差小于2.2%
空间分辨率可以达到0.2 m
拉伸—压缩应变无“死区”
为分布式应变传感提供了极具潜力的解决方案。
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