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Parameter subset selection based damage detection of aluminium frame structure

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Original languageEnglish
Title of host publication9th International Conference on Damage Assessment of Structures, Oxford
Pages1 - 10
Number of pages10
Volume305
DOIs
DatePublished - 11 Jul 2011

Abstract

A three storey aluminium frame structure was tested in multiple damage cases. All damage scenarios, simulated by the localized stiffness changes, were associated with joint areas of the structure. Further, between damage tests the structure was returned to its healthy reference conditions and was again measured. In this paper, a parameter subset selection methodology is applied to an updated finite element model of the structure, together with a previously demonstrated approach employing concepts of model sensitivity subspace angles, first order model representation and mixed response residuals for damage detection. The objective of this paper is the evaluation of these methods on a real experimental structure with significant complexity, represented by an imprecise reference mathematical model and in the environment with uncertain reference structural state. The questions of symmetry, mixed response residuals and semi-localized parameterization are also addressed in this work.

Additional information

Conference Proceedings/Title of Journal: Journal of Physics: Conference Series Conference Organiser: IOP Institute of Physics

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