Damage detection using generic elements: Part II. Damage detection

This paper proposes the use of generic elements in damage detection, based on the use of an updated baseline finite element model, modal sensitivities and changes in the measured modal quantities arising from structural damage. A companion paper presented the fundamental theory of model updating and...

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Bibliographic Details
Published in:Computers & structures 2003-09, Vol.81 (24), p.2287-2299
Main Authors: Titurus, Branislav, Friswell, Michael I., Starek, Ladislav
Format: Article
Language:English
Subjects:
Damage detection
Damage location
Experimental modal analysis
Finite element method
Generic elements
Parameterisation
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Summary:This paper proposes the use of generic elements in damage detection, based on the use of an updated baseline finite element model, modal sensitivities and changes in the measured modal quantities arising from structural damage. A companion paper presented the fundamental theory of model updating and generic element or substructure parameterisation. The experimental structure was chosen so that a considerable difference existed between the baseline finite element model and the undamaged (healthy) structure. However the structure was successfully updated so that the model can be used effectively for damage detection and location. The main aim of this paper is to propose a method for the estimation of damage location and apply it to an experimental case study. The novel aspects of this approach are the type of parameterisation employed for the model updating and damage detection studies and the use of measured mode shapes to handle geometrical symmetry of the structure.
ISSN:0045-7949
1879-2243
DOI:10.1016/S0045-7949(03)00318-3