感应频率编码传感器用于复合材料的非破坏性结构应变监测
Angelica Masi1,2, Martina Falchi1,2, Danilo Brizi1,2
1Department of Information Engineering, University of Pisa, 56122 Pisa, Italy.
Sensors (Basel, Switzerland)
|October 26, 2024
概括
一个新的传感器设计使用频率编码来非破坏性监测结构复合材料. 这种具有成本效益的设备可以准确地检测和区分复合结构中的结构变形.
科学领域:
- 材料科学 材料科学 材料科学
- 电气工程 电气工程
- 机械工程 机械工程
背景情况:
- 结构复合材料为航空航天和风能等各种应用提供可定制的机械性能.
- 有效的非侵入性结构健康监测 (SHM) 对于确保这些先进材料的完整性至关重要.
- 现有的SHM方法往往在灵敏度,成本或集成复杂性方面面临限制.
研究的目的:
- 引入一种新的,频率编码的传感器,用于在复合材料中进行非破坏性的结构应变监测.
- 为拟议的传感器设计开发一个分析和数值模型.
- 通过电磁模拟和实验测量来验证传感器的性能.
主要方法:
- 一种新的传感器设计,采用了三个螺旋共振器,优化了不同的频率,通过条形线激发.
- 使用电路方法和数字模拟在100-400 MHz频率范围内进行分析建模.
- 使用嵌入在玻璃纤维复合材料样本中的印刷电路板 (PCB) 原型进行实验验证.
主要成果:
- 电磁全波模拟显示出有希望的结果,随后通过实验测量得到证实.
- 传感器表现出极高的灵敏度,成本效益和易于集成,这是由于其最小的布线和小的形状.
- 频率编码配置允许根据严重程度和位置准确检测和区分结构变形.
结论:
- 开发的频率编码传感器是复合材料结构健康的非破坏性监测的高效和实用解决方案.
- 传感器的设计提供了透深度和系统灵敏度之间的平衡,适合各种复合材料应用.
- 这项技术在提高关键行业复合结构的安全性和可靠性方面具有重大潜力.
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