Identification of Localized Structural Damage from Highly Incomplete Modal Information: Theory and Experiments
Publication: Journal of Engineering Mechanics
Volume 142, Issue 2
Abstract
The paper presents a methodology for identification of localized structural damage using highly incomplete modal information, such as a subset of modal frequencies. The proposed methodology is based on linearized modal sensitivities and -norm minimization of the algebraic difference between identified frequencies in damaged and undamaged states. The method is verified using stochastic simulations and validated using a series of laboratory experiments in which the number of potentially damaged elements is significantly larger than the number of identified modal frequencies.
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Acknowledgments
The author would like to acknowledge the assistance of Mr. Floyd Vilmont in constructing the experimental setup presented in this paper.
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Published In
Journal of Engineering Mechanics
Volume 142 • Issue 2 • February 2016
Copyright
© 2015 American Society of Civil Engineers.
History
Received: Sep 8, 2014
Accepted: Jun 4, 2015
Published online: Jul 23, 2015
Discussion open until: Dec 23, 2015
Published in print: Feb 1, 2016
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