Development of a System-Level Distributed Sensing Technique for Long-Term Monitoring of Concrete and Composite Bridges
| 项目名称： | Development of a System-Level Distributed Sensing Technique for Long-Term Monitoring of Concrete and Composite Bridges |
| 摘要： | Long-distance distributed sensing of bridges using fiber optic sensors is achieved by the Brillouin scattering of nonlinear acoustic photons (laser light) inside an optical fiber. Such nonlinear scattering of incident photons can be exploited to obtain the change of state (due to temperature or stress) at different locations in an optical fiber over a long distance (e.g., from several to hundreds of miles). In this project, Brillouin Optical Time Domain Reflectometer (BOTDR) technique has been adopted for distributed sensing of mechanical and thermal strains of bridges. Figure 2 shows the schematic configuration of BOTDR for bridge monitoring and the conceptual description of multiphysical observation of structural behavior for health monitoring. The research team will develop a system-level distributed sensing technique and its design procedure for composite and concrete bridges, as well as developing structural health monitoring algorithms based on mechanical and electromagnetic measurements using fiber optic, video motion, and radar sensors. |
| 状态： | Active |
| 资金： | 166304 |
| 资助组织： | University Transportation Center Program<==>Transportation Infrastructure Durability Center<==>University of Massachusetts, Lowell<==>University of Vermont, Burlington<==>University of Maine, Orono<==>Office of the Assistant Secretary for Research and Technology |
| 项目负责人： | Dunn, Denise E |
| 执行机构： | Transportation Infrastructure Durability Center<==>University of Massachusetts, Lowell<==>University of Vermont, Burlington<==>University of Maine, Orono |
| 开始时间： | 20200101 |
| 预计完成日期： | 20211231 |
| 主题领域： | Bridges and other structures；Highways；Maintenance and Preservation |
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