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Proceedings Paper

Damage assessment of the truss system with uncertainty using frequency response function based damage identification method
Author(s): Jie Zhao; Hans DeSmidt; Wei Yao
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Paper Abstract

A novel vibration-based damage identification methodology for the truss system with mass and stiffness uncertainties is proposed and demonstrated. This approach utilizes the damaged-induced changes of frequency response functions (FRF) to assess the severity and location of the structural damage in the system. The damage identification algorithm is developed basing on the least square and Newton-Raphson methods. The dynamical model of system is built using finite element method and Lagrange principle while the crack model is based on fracture mechanics. The method is synthesized via numerical examples for a truss system to demonstrate the effectiveness in detecting both stiffness and mass uncertainty existed in the system.

Paper Details

Date Published: 1 April 2015
PDF: 10 pages
Proc. SPIE 9437, Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015, 94371A (1 April 2015); doi: 10.1117/12.2082593
Show Author Affiliations
Jie Zhao, The Univ. of Tennessee Knoxville (United States)
Hans DeSmidt, The Univ. of Tennessee Knoxville (United States)
Wei Yao, The Univ. of Tennessee Knoxville (United States)


Published in SPIE Proceedings Vol. 9437:
Structural Health Monitoring and Inspection of Advanced Materials, Aerospace, and Civil Infrastructure 2015
Peter J. Shull, Editor(s)

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