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Civil Engineering Association eBooks Structural Books Bridge (Project and Technology) Novel Optical Fiber Sensors for Monitoring Bridge Structural Integrity

Novel Optical Fiber Sensors for Monitoring Bridge Structural Integrity
 mahyarov

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10-27-2012, 02:33 PM
Novel Optical Fiber Sensors for Monitoring Bridge Structural Integrity

Author: Feng, Maria Q | Size: 1.76 MB | Format: PDF | Quality: Unspecified | Publisher: National Technical Information Service | Year: 2009 | pages: 51

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This Innovations Deserving Exploratory Analysis (IDEA) project successfully developed a novel sensor system based on innovative integration of fiber optics and Moire phenomena for measuring dynamic response of highway bridges to assess their structural integrity. The 18-month project was conducted in two phases. Work in the initial phase focused on the development of a prototype sensor system. Technical specifications of the proposed fiber optic accelerometer system were established, based on which a conceptual design of the system was developed. In the second phase, the system was extensively tested under a variety of dynamic excitations including earthquake inputs on seismic shaking tables. Furthermore, the sensors were tested at two highway bridge sites in California under traffic excitations, in collaboration with Caltrans. These tests demonstrated superior performance of the new fiber optic accelerometer system over its conventional electrical counterparts. Newport Sensors, Inc., has started to develop the fiber optic accelerometer system into commercial products.

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