Nondestructive Crack Detection Algorithm for Full-Scale Bridges
Publication: Journal of Structural Engineering
Volume 129, Issue 10
Abstract
A nondestructive crack detection (NCD) scheme to locate a crack and estimate the crack size by using changes in the modal parameters of a class of bridges is presented in this paper. First, the theory underlying a nondestructive crack localization and crack-size estimation algorithm for beam-type structures is outlined. Next, a field experiment to verify the feasibility and applicability of the NCD scheme is detailed. In that experiment, predamage and postdamage modal data extracted from a full-scale plate–girder bridge are described. The modal data are fed into the NCD scheme that localizes crack and estimates crack size in the test structure. The result of the analysis indicates that the proposed NCD algorithm correctly locates the crack and accurately estimates the size of the crack.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 129 • Issue 10 • October 2003
Pages: 1358 - 1366
Copyright
Copyright © 2003 American Society of Civil Engineers.
History
Received: Mar 20, 2001
Accepted: Sep 5, 2002
Published online: Sep 15, 2003
Published in print: Oct 2003
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