Damage Detection Utilizing the Damage Index Method to a Benchmark Structure
Publication: Journal of Engineering Mechanics
Volume 130, Issue 2
Abstract
This paper addresses the first generation benchmark problem on structural health monitoring developed by the ASCE Task Group on Structural Health Monitoring. The focus of the problem is a four-story model of an existing physical model at the University of British Columbia where simulated data are used for the system identification. Modal parameters were extracted using the frequency domain decomposition method. Rather than relying on data from the undamaged structure, a new proposed methodology based on ratios between stiffness and mass values from the eigenvalue problem is presented to identify the undamaged state of the structure. Once the structural identification is complete, the damage index method is used to detect the location and severity of damage. By not relying on undamaged structure information, this approach may be applicable to existing structures that may already incorporate some amount of damage.
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Information & Authors
Information
Published In
Journal of Engineering Mechanics
Volume 130 • Issue 2 • February 2004
Pages: 142 - 151
Copyright
Copyright © 2004 American Society of Civil Engineers.
History
Received: Jan 29, 2002
Accepted: Jun 9, 2003
Published online: Jan 16, 2004
Published in print: Feb 2004
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