STTR Phase II: Long-Gage Fiber Bragg Sensors for Structural Health Monitoring and Damage Identification

STTR 第二阶段：用于结构健康监测和损伤识别的长规格光纤布拉格传感器

• 批准号: 0131967
• 负责人: Eric Udd
• 金额: $ 49.93万
• 依托单位: BLUE ROAD RESEARCH, INC
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-02-15 至 2005-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0131967&HistoricalAwards=false
• 关键词: STTR; Phase; II; Long; Gage

This Small Business Technology Transfer (STTR) Phase II project will further explore the use of long-gage fiber Bragg grating strain sensors in conjunction with vibration-based system identification techniques forhealth monitoring and damage identification of civil structures. In phase I, the proof of concept was shown based on static and dynamic laboratory experiments on small-scale structural models. In this Phase II effort, field tests on bridges identified in Oregon and California will be performed to further validate this very promising tool for structural health monitoring and damage identification. These bridges provide unique opportunities as two of them are scheduled for demolition and both State Departments of Transportation have agreed to support testing as these bridges are systematically damaged to provide a true real-world test of the damage identification system. These field tests will be an important step in providing feasibility data for future commercialization of the structural health monitoring and damage identification system. Once the proposed methods are debugged and validated for field applications, the California and Oregon DOT's will strongly consider adopting them for widespread use in their structural health-monitoring and bridge rehabilitation programs.The proposed structural health monitoring and damage identification system offers very promising advanced solutions to the triple problem of: (1) monitoring the state-of-health of the civil infrastructure system for optimum allocation of rehabilitation resources, (2) optimally designing the rehabilitation scheme for a specific deficient civil structure, and (3) evaluating the efficacy of the rehabilitation measure.

该小型企业技术转让 (STTR) 第二阶段项目将进一步探索使用长规格光纤布拉格光栅应变传感器与基于振动的系统识别技术相结合，进行土木结构的健康监测和损伤识别。在第一阶段，基于小型结构模型的静态和动态实验室实验展示了概念验证。在第二阶段的工作中，将对俄勒冈州和加利福尼亚州确定的桥梁进行现场测试，以进一步验证这一非常有前途的结构健康监测和损坏识别工具。这些桥梁提供了独特的机会，因为其中两座桥梁计划拆除，而且两个州交通运输部都同意支持测试，因为这些桥梁受到系统性损坏，以便对损坏识别系统进行真正的真实测试。这些现场测试将是为结构健康监测和损伤识别系统未来商业化提供可行性数据的重要一步。一旦所提出的方法经过现场应用的调试和验证，加利福尼亚州和俄勒冈州交通部将强烈考虑将其广泛用于其结构健康监测和桥梁修复计划。所提出的结构健康监测和损伤识别系统为解决以下三重问题提供了非常有前景的先进解决方案：（1）监测民用基础设施系统的健康状况，以优化修复资源的分配， （2）针对特定缺陷土木结构优化设计修复方案；（3）评估修复措施的效果。