Document Type

Article

Publication Date

2001

Publication Title

Journal of Structural Engineering

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.

Volume

127

Issue

4

First Page

418

Last Page

425

Comments

Originally published in the ASCE Journal of Structural Engineering, 127(4):418-425.

http://ascelibrary.org/journal/jsendh

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