使用分布式光纤应变传感器评估细型圆柱体结构中的曲变形
Madhubhashitha Herath1,2, Oleg V Ivanov1,2, Kaushal Bhavsar1,2
1School of Engineering and Technology, Faculty of Science and Engineering, University of Hull, Hull HU6 7RX, UK.
Sensors (Basel, Switzerland)
|December 11, 2025
概括
光纤传感器有效监测水下电缆等圆柱体结构的曲. 这项技术可以确定变形的类型,幅度和方向,提高基础设施的安全性.
科学领域:
- 结构健康监测 结构健康监测
- 光学传感技术的技术
- 机械工程 机械工程
背景情况:
- 纤细的圆柱形结构,如海底电力电缆,是基础设施的重要组成部分.
- 这些结构易受曲变形的影响,这可能导致故障.
- 有效监测曲是确保结构完整性的关键.
研究的目的:
- 研究分布式光纤传感器的应用,用于监测细型圆柱体结构中的曲变形.
- 在各种曲条件下分析不同配置的光纤的应变反应.
- 开发一种利用光纤传感数据重建变形形状的方法.
主要方法:
- 使用Brillouin光学时域反射计 (BOTDR) 来进行应变传感.
- 在三点和恒定的曲率曲下,实验测试了6米圆形空心截面 (CHS).
- 连接的光纤纵向和螺旋向CHS表面.
- 开发了一个有限元模型 (FEM) 用于模拟和解释.
- 在应变数据上进行逆向分析,以重建变形的形状.
主要成果:
- 对纵向和螺旋绕的纤维观察到不同的拉伸形状,区分曲类型.
- 该研究成功地区分了三点曲和恒定曲率曲行为.
- 光纤传感显示了评估曲变形的类型,大小和方向的能力.
- FEM模拟有助于解释实验应变反应.
结论:
- 分布式光纤传感是一种可行的方法,用于监测圆柱体结构的曲.
- 光纤的配置显著影响检测到的应变形状.
- 这项研究为设计关键圆柱形基础设施的有效传感系统提供了基本的见解.
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