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设计,校准和应用一个宽范围的纤维布拉格格应变传感器
Gang Wang1, Jiajian Wang2, Jian Meng2
1State Key Laboratory of Offshore and Coastal Engineering, Dalian University of Technology, Dalian 116024, China.
Sensors (Basel, Switzerland)
|February 26, 2025
概括
这项研究引入了一种具有蛇弹机制的新型纤维布拉格格 (FBG) 应变传感器. 该传感器有效监测基础设施中的大型结构应变,提高灾难性事件期间的安全性.
科学领域:
- 结构健康监测 结构健康监测
- 机械工程 机械工程
- 材料科学 材料科学 材料科学
背景情况:
- 基础设施安全至关重要,特别是在灾难性事件期间.
- 现有的应变传感器很难监测极端变形.
- 精确的应变测量对于结构完整性至关重要.
研究的目的:
- 开发一种广泛的应变传感器,用于监测大型结构变形.
- 加强对桥梁和管道等关键基础设施的安全分析.
- 在极端应变场景中克服传统传感器的局限性.
主要方法:
- 设计了一种蛇弹脱敏机制,并使用应变能量获得其轴性刚度.
- 该机制使用3D打印制造,并与纤维布拉格格 (FBG) 传感器集成.
- 组装的宽范围传感器经过校准和管道测试.
主要成果:
- 开发的传感器实现了10,000 μm的广泛应变范围.
- 记录了超过0.9995的线性系数,表明了高精度.
- 在管道中的成功测试证明了有效的实时监控能力.
结论:
- 拟议的FBG宽范围应变传感器有效地解决了监测大型结构应变的挑战.
- 这项技术为关键基础设施的实时结构安全分析提供了可靠的解决方案.
- 传感器的性能表明其在极端条件下的监控基础设施中广泛应用的潜力.
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