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Determination of Stiffness Changes from Modal Parameter Changes for Structural Health Monitoring

Beck, J. L. and Vanik, M. W. and Katafygiotis, L. S. (1994) Determination of Stiffness Changes from Modal Parameter Changes for Structural Health Monitoring. In: Proceedings First World Conference on Structural Control. International Association for Structural Control , Los Angeles, CA, TA3-13-TA3-22. ISBN 0962890839 http://resolver.caltech.edu/CaltechAUTHORS:20120926-103929161

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Abstract

A Bayesian probabilistic methodology is presented for identification of structural stiffness loss from changes in estimated modal parameters. The method constitutes the second step of a two-step procedure for continuously monitoring the health of a structure by utilizing its natural ambient vibrations. The version presented here assumes that any damage that occurs is localized to one part of the structure. Numerical testing of the proposed scheme shows that under specified conditions, the method successfully determines the existence, location, and degree of stiffness loss, even in the presence of levels of uncertainty in the estimated modal parameters that are expected in real applications.


Item Type:Book Section
Record Number:CaltechAUTHORS:20120926-103929161
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20120926-103929161
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:34437
Collection:CaltechAUTHORS
Deposited By: Carmen Nemer-Sirois
Deposited On:15 Oct 2012 18:42
Last Modified:15 Oct 2012 18:42

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