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Proceedings Paper

Comparison of damage detection results utilizing an ARMA model and an FRF model to extract the modal parameters
Author(s): Gabriel V. Garcia; Roberto A. Osegueda; David Meza
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Paper Abstract

The objective of this paper is to make a comparison of the damage detection results obtained from an analysis of the modal parameters extracted from a time domain model and a frequency domain model. In this paper, an autoregressive moving average (ARMA) model and a FRF model will be utilized to extract the modal parameters of a beam. Expressions for the modal parameters using the ARMA model are developed. Next, an established theory of damage localization, which yields information on the location of the damage directly from changes in mode shapes, is selected. Expressions for classification algorithms using the damage indicator functions from the damage localization theory are then generated. Using the classification algorithms, damage localization is attempted for a pinned-pinned beam which contains damage of various degrees. Finally, the modal parameters and damage detection results obtained from the two methods are compared.

Paper Details

Date Published: 17 June 1998
PDF: 9 pages
Proc. SPIE 3325, Smart Structures and Materials 1998: Smart Systems for Bridges, Structures, and Highways, (17 June 1998); doi: 10.1117/12.310614
Show Author Affiliations
Gabriel V. Garcia, New Mexico State Univ. (United States)
Roberto A. Osegueda, Univ. of Texas/El Paso (United States)
David Meza, Univ. of Texas/El Paso (United States)


Published in SPIE Proceedings Vol. 3325:
Smart Structures and Materials 1998: Smart Systems for Bridges, Structures, and Highways
S.-C. Liu, Editor(s)

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