Experimental Verification of the Flexibility-Based Damage Locating Vector Method
Publication: Journal of Engineering Mechanics
Volume 133, Issue 10
Abstract
In recent years, numerous approaches have been proposed for detecting damage in structures, in which the flexibility-based damage locating vector (DLV) method is one of the promising techniques. By computing a set of load vectors from the change of the flexibility matrix before and after damage and then applying them as static forces to the undamaged analytical model for static computation, the DLV method is able to locate damage in structures. The main purpose of this paper is to experimentally verify this method. Following a brief introduction and discussion of the motivation for the flexibility-based method, an overview of the DLV method and construction of the flexibility matrix from limited sensor information is presented. The DLV method is then experimentally verified employing a 5.6 m (18 ft)-long three-dimensional truss structure. To simulate damage in the structure, the original truss member is replaced by one with reduced stiffness. Experimental results show that the DLV method can successfully detect the damage using a limited number of sensors and modes.
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Acknowledgments
The writers gratefully acknowledge the support of the research by the National Science Foundation, under Grant No. NSFCMS 03-01140 (Dr. S. C. Liu, Program Director).
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 133 • Issue 10 • October 2007
Pages: 1043 - 1049
Copyright
© 2007 ASCE.
History
Received: Nov 16, 2004
Accepted: Mar 30, 2007
Published online: Oct 1, 2007
Published in print: Oct 2007
Notes
Note. Associate Editor: Nicos Makris
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