Damage location vector: A non-destructive structural damage detection technique

Authors:
D. Huynh;J. He;D. Tran
Affiliations:
Faculty of Science, Engineering and Technology, Victoria University of Technology, FP Campus, P.O. Box 14428, MCMC, VIC 8001, Australia;Australian Maritime Hydrodynamics Research Centre, P.O. Box 986, Launceston, Tasmania 7250, Australia;Faculty of Science, Engineering and Technology, Victoria University of Technology, FP Campus, P.O. Box 14428, MCMC, VIC 8001, Australia
Venue:
Computers and Structures
Year:
2005

Citing 0
Cited 4

Damage identification using modal, static and thermographic analysis with additional control parameters

Computers and Structures
Damage detection of circular hollow cylinder using modal strain energy and scanning damage index methods

Computers and Structures
Structural health monitoring using peak of frequency response

ACMOS'07 Proceedings of the 9th WSEAS international conference on Automatic control, modelling and simulation
Damage diagnostic technique for structural health monitoring using POD and self adaptive differential evolution algorithm

Computers and Structures

Quantified Score

Hi-index	0.00

Visualization

Abstract

This paper presents a method for structural damage detection using frequency response functions (FRF) obtained from non-destructive vibration tests. It investigates the case of early structural damage in which there is no appreciable change in mass and damping. The resulting change in structural stiffness matrix is reflected in changes of FRF data which can be exemplified by the evaluation of damage location vector (DLV). This evaluation requires the dynamic stiffness matrix of the undamaged (virgin) structure and the change in frequency response functions of the currently damaged structure. In this paper the former is obtained from a finite element model of the virgin structure and the latter are obtained from the finite element modelling (FEM) and from impact hammer test. The method is applied to a space truss structure and a plate structure. Effects of noise, both numerically simulated and measured are also investigated. Preliminary results show that this method of Damage Location Vector can overcome the problems of coordinate incompatibility and noise and deliver encouraging results on damage detection.