在金属结构中使用平面断天线检测裂
Nandana Radhakrishnan1, Massimo Donelli2, Sreedevi K Menon3,4
1Department of Physics, Amrita Vishwa Vidyapeetham, Amritapuri 690525, India.
Sensors (Basel, Switzerland)
|December 11, 2025
概括
一个新的单极天线有效地检测金属结构的裂,用于结构健康监测 (SHM). 它的共振频率变化准确地表明了裂的存在和传播,并通过模拟和实验验证.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 结构健康监测 结构健康监测
背景情况:
- 结构健康监测 (SHM) 对于保持金属结构的完整性至关重要.
- 早期发现裂对于防止灾难性故障至关重要.
- 基于天线的传感器提供了一个有希望的非破坏性评估方法.
研究的目的:
- 开发和验证用于检测金属结构裂的断天线传感器.
- 为了调查天线的灵敏度和性能下降由于裂.
- 评估使用这种天线用于SHM应用的可行性.
主要方法:
- 使用有限元分析 (FEA) 进行数值评估.
- 对天线传感器性能进行实验验证.
- 在天线的地面平面上引入裂作为干扰.
主要成果:
- 线性共振频率的变化与裂的存在和传播有关.
- 实现了-41.2 MHz/mm的高灵敏度,用于裂检测.
- 分析了裂方向和尺寸对传感器性能的影响.
结论:
- 拟议的单极天线传感器可靠地检测金属结构中的微小结构缺陷.
- FEA和实验结果证实了天线对SHM的有效性.
- 天线传感器显示了实时结构完整性评估的潜力.
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