Paper Title:
Damage Identification of a Beam-Like Structure Using Element Modal Strain Energies and Natural Frequencies
  Abstract

A two-step damage identification method based on elemental modal strain energies and natural frequencies has been presented for a beam-like structure. In the first stage, this method makes use of the change of elemental modal strain energy before and after damage to locate the potential damage regions. And in the second stage, a damage identification algorithm based on the frequency changes is developed to calculate the damage extent and further determine the actual damage locations. The performance of the proposed method is numerically demonstrated by a simply supported beam with two damage cases. Results indicate that the method can identify the damage location and quantify the damage severity accurately in a beam-like structure.

  Info
Periodical
Chapter
Chapter 1: Structural Engineering
Edited by
Xuejun Zhou
Pages
718-723
DOI
10.4028/www.scientific.net/AMM.94-96.718
Citation
J. H. Zhao, L. Zhang, "Damage Identification of a Beam-Like Structure Using Element Modal Strain Energies and Natural Frequencies", Applied Mechanics and Materials, Vols. 94-96, pp. 718-723, 2011
Online since
September 2011
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$32.00
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