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Damage Detection of Structural Systems with Noisy Incomplete Input and Response Measurements

Yuen, Ka-Veng and Beck, James L. and Katafygiotis, Lambros S. (2002) Damage Detection of Structural Systems with Noisy Incomplete Input and Response Measurements. In: Proceedings of the 15th ASCE Engineering Mechanics Conference. Columbia University , Columbia University, Paper No. 281.

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A probabilistic approach for damage detection is presented using noisy incomplete input and response measurements that is an extension of a Bayesian system identification approach developed by the authors. This situation may be encountered, for example, during low-level ambient vibrations when a structure is instrumented with accelerometers that measure the input ground motion and structural response at a few locations but the wind excitation is not measured. A substructuring approach is used for the parameterization of the mass and stiffness distributions. Damage is defined to be a reduction of the substructure stiffness parameters compared with those of the undamaged structure. By using the proposed probabilistic methodology, the probability of various damage levels in each substructure can be calculated based on the available data. A four-story benchmark building subjected to wind and ground shaking is considered in order to demonstrate the proposed approach.

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Yuen, Ka-Veng0000-0002-1755-6668
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34244
Deposited By: Carmen Nemer-Sirois
Deposited On:21 Sep 2012 23:19
Last Modified:12 Aug 2021 22:41

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