United States Department of Transportation
i
Infrastructure Inspection During and After Unexpected Events-Phase I
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2018-12-01
[PDF-3.68 MB]
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Edition:Final Report, August 2017-December 2018
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Abstract:This report presents the development of a vibration-based damage-detection methodology for the structural health monitoring and damage detection of vital line structures and highway bridges under extreme conditions, including seismic and water interactions. The damage-detection method uses the transmissibility function-the ratio between the output signals at two locations on the structure-of the acceleration, angular velocity, and strain signals to generate a damage index. The validity of the proposed damage index was tested on a small-scale model of a highway bridge under impact loading, with ground vibration, and inside a water flume. The initial experimental results showed a very promising performance of the proposed damage index in detecting changes in the integrity of the structure under different loading/damage conditions. The results also showed the benefits of deploying heterogeneous kinds of sensors rather than just using one type of sensor.
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Content Notes:Final data for the project is stored in the UNL Data Repository. The metadata URL is: https://doi.org/10.13014/K2VX0DRZ
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