一个新的综合框架用于检测钢结构中的损坏,使用磁性压电传感器和混合损坏指数
Dattar Singh Aulakh1, Divya Rawat2, Suresh Bhalla3
1Thapar Institute of Engineering and Technology, Patiala, India.
Scientific reports
|October 15, 2025
概括
可重复使用的磁结合压电传感器 (MBPS) 为结构健康监测提供了传统结合传感器的经济有效的替代方案. 这种新型传感器有效检测钢结构的损坏,确保可靠和弹性监测.
科学领域:
- 结构工程 结构工程
- 材料科学 材料科学 材料科学
- 传感器技术 传感器技术
背景情况:
- 用于结构健康监测 (SHM) 的传统压电传感器是永久粘合的,有可能降解并增加成本.
- 现有的电机阻抗 (EMI) 和基于振动的监测等方法需要多个传感器,增加复杂性和费用.
研究的目的:
- 开发和评估可重复使用的单磁结合压电传感器 (MBPS) 用于钢结构损坏监测.
- 为了解决结合传感器的局限性,包括降解,成本和多个单元的需求.
主要方法:
- 开发了一种可重复使用的MBPS,并使用EMI用于螺栓松检测 (RMSD) 和曲率变化的模态测试来评估其性能.
- 使用RMSD损伤指数 (RDI) 和曲率损伤指数 (CDI) 评估薄壁钢板的损伤检测能力.
- 提出了一种新的混合损害指数 (HDI),将RDI和CDI整合起来,以减少噪音和改善本地化.
主要成果:
- MBPS表现出高重复性 (相关系数>99.5%),证实了SHM的可靠性.
- 在微型标本中,皮埃佐盘声器MBPS显示了最高的RMSD指数.
- 使用RDI和CDI,MBPS有效地识别了损伤,该指数在损伤位置最高,但扩散,呈现出类似雨的形成.
- 拟议的HDI有效地减少了与受损区域相邻的未受损的面板上的噪音.
结论:
- MBPS,特别是压盘声器配置,是钢结构损坏监测的高效和强大的解决方案.
- 结合新的HDI,MBPS为SHM应用提供了一种灵敏,灵活和有弹性的替代传统粘合压电传感器.
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