基于光纤声发射传感技术的桥梁监测实验研究

摘要  光纤传感器耐久性好,体积小,质量轻,易于实现分布式检测,能满足桥梁等土木结构的实时健康监测。该文设计了一非本征光纤法布里-珀罗(F-P)传感器结构,分析了光纤F-P声发射传感机理,建立了基于光纤F-P声发射传感技术的检测系统,用于混凝土桥梁健康状况的实时在线检测。实验结果表明,该传感器结构简单,体积小,成本低,制作容易,能有效用于桥梁健康监测,易于实现商品化。The optical fiber sensor can meet the requirements of the real-time health monitoring of the bridge structure with its features of good wearing,small size and easy to realize the distribution detection.A extrinsic optical fiber F-P sensor structure has been designed in this work and the sensing mechanism of the optical fiber F-P acoustic emission has been analyzed.A detection system based on the optical fiber F-P acoustic emission technolgy has been fabricated for detecting the health state of the concrete bridge on-line in real time.The experimemtal results showed that the sesor has the features of simple structure,small size,cost-effectiveness and easy-to-fabricate.It can be used for the bridge health detection effectively and is easy to produce commercially.
作者  单宁
机构地区  武警工程学院装备运输系
出处《压电与声光》 CSCD 北大核心  2011年第2期182-184,187,共4页            Piezoelectrics & Acoustooptics
基金  中国博士后科学基金面上资助项目(20100481509)
关键词  光纤传感器声发射技术桥梁健康监测optical fiber sensor acoustic emission technology bridge health monitoring
分类号  TG115 [金属学及工艺—物理冶金]