Application of Dynamic System Identification to Timber Beams. I
Publication: Journal of Structural Engineering
Volume 127, Issue 4
Abstract
In this first part of a two-part paper, development of a method of dynamic system identification for timber beams is presented with an analytical verification of the method using a finite-element model. A method of global nondestructive evaluation for identifying local damage and decay in timber beams is investigated in this paper. Experimental modal analysis is used in conjunction with a previously developed damage localization algorithm. The damage localization algorithm utilizes changes in modal strain energy between the mode shapes of a calibrated model, representing the undamaged state of the beam of interest, and the experimentally obtained mode shapes for a timber beam. Analytical evaluations were performed to demonstrate and verify the use of this method of global nondestructive evaluation for the localization of damage or decay in timber beams. In a companion paper, experimental laboratory tests are presented that verify the use of dynamic system identification to locate damage within timber beams.
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Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 127 • Issue 4 • April 2001
Pages: 418 - 425
History
Received: Jan 8, 2000
Published online: Apr 1, 2001
Published in print: Apr 2001
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