Journal
JOURNAL OF SOUND AND VIBRATION
Volume 322, Issue 1-2, Pages 336-357Publisher
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.jsv.2008.11.022
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Funding
- National Science Foundation (NSF)
- National Aeronautics and Space Administration (NASA)
- California Department of Transportation (Caltrans)
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Large-scale viscous dampers are frequently used in civil structures to mitigate seismic and wind-induced vibration. For an effective condition assessment of nonlinear dampers, a probabilistic change detection methodology is proposed. The results of experimental studies with different large-scale nonlinear viscous dampers are shown. Considering damper experimental data with measurement uncertainty, the proposed data-driven methodology can be used to (1) detect small changes of a nonlinear system, (2) interpret the physical meanings of system changes, and (3) quantify the uncertainty of the detected changes without a priori knowledge of the system's characteristics. (C) 2008 Elsevier Ltd. All rights reserved.
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