TY - GEN
T1 - Parameter subset selection based damage detection of aluminium frame structure
AU - Titurus, B
AU - Friswell, MI
N1 - Conference Proceedings/Title of Journal: Journal of Physics: Conference Series
Conference Organiser: IOP Institute of Physics
PY - 2011/7/11
Y1 - 2011/7/11
N2 - 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.
AB - 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.
U2 - 10.1088/1742-6596/305/1/012092
DO - 10.1088/1742-6596/305/1/012092
M3 - Conference Contribution (Conference Proceeding)
VL - 305
SP - 1
EP - 10
BT - 9th International Conference on Damage Assessment of Structures, Oxford
ER -