Application of Dynamic System Identification to Timber Beams - part I

Authors

S T. Peterson, Washington State University
D I. McLean, Washington State University
M D. Symans, Washington State University
David Pollock, George Fox UniversityFollow
W F. Cofer, Washington State University
R N. Emerson, Oklahoma State University - Main Campus
Kenneth J. Fridley, University of Nevada, Las Vegas

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

DOI

https://doi.org/10.1061/(ASCE)0733-9445(2001)127:4(418)

Comments

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

Recommended Citation

Peterson, S T.; McLean, D I.; Symans, M D.; Pollock, David; Cofer, W F.; Emerson, R N.; and Fridley, Kenneth J., "Application of Dynamic System Identification to Timber Beams - part I" (2001). Faculty Publications - Biomedical, Mechanical, and Civil Engineering. 35.
https://digitalcommons.georgefox.edu/mece_fac/35