Fiber Optic Sensors for Strength Evaluation and Early Warning of Impending Failure in Structural Components

用于结构部件强度评估和即将发生故障预警的光纤传感器

• 批准号: 9018572
• 负责人: Edward Nawy
• 金额: $ 20.78万
• 依托单位: Rutgers University New Brunswick
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1990
• 资助国家: 美国
• 起止时间: 1990-11-15 至 1994-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9018572&HistoricalAwards=false
• 关键词: Fiber; Optic; Sensors; Strength; Evaluation

The main objective of this proposed research is to develop and test optical fiber strain and stress sensor systems for on-line, accurate, and real-time monitoring of critical components of structural systems under service load conditions. In this proposed research the combined resources of Rutgers' Civil Engineering Department and those of its center for Fiber Optic Material Research Program (FOMRP) will be devoted for development and implementation of both discrete and continuous optical fiber strain / stress sensors for detection and warning of imminent structural failures for both concrete, and steel structures. In the case of concrete structural components, the sensor system will be evaluated under both embedded (internal) and exposed (external) condition; where the latter is attached to existing structures and the former is embedded in the structure during its construction.

这项拟议的研究的主要目的是开发和测试光纤应变和应力传感器系统，以在服务负荷条件下对结构系统的关键组件进行在线，准确和实时监测。 在这项拟议的研究中，Rutgers的土木工程部和其光纤材料研究中心（FOMRP）的合并资源将用于开发和实施离散和连续的光纤应变 /应力传感器，以检测和警告即将到来的混合结构以及钢结构的结构性故障。 在混凝土结构组件的情况下，将在嵌入式（内部）和暴露（外部）条件下评估传感器系统；后者附着在现有结构上，而前者在建造过程中嵌入了结构中。