Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/33560
Title: Sensitivity Enhancement for Structural Condition Assessment with Noisy Excitation or with Only Output
Authors: Liu, K
Law, SS
Zhu, XQ
Keywords: Condition assessment
Damage identification
Force identification
Noise
Response sensitivity
Sensitivity enhancement
Singular spectrum analysis
Issue Date: 2015
Publisher: World Scientific
Source: International journal of structural stability and dynamics, 2015, v. 15, no. 6, 1450083 How to cite?
Journal: International journal of structural stability and dynamics 
Abstract: Revisited herein is the response sensitivity method for structural condition assessment. The performance of a sensitivity enhancement technique for structural damage identification is discussed with reference to cases with noisy excitation or with only output. An extended study on the structural condition assessment is conducted based on a newly developed force identification technique and the response sensitivity enhancement method. Numerical simulations with a planar truss structure show that the adverse effect of noise in excitation cannot be ignored in damage detection. A two-step method including the sensitivity enhancement technique for damage detection could improve the identification accuracy with less influence from the identified excitations. The improved structural condition assessment with sensitivity enhancement technique out-performs the conventional sensitivity approach with more accurate results from the truss structure studied even with a 10% noise in the measured responses.
URI: http://hdl.handle.net/10397/33560
ISSN: 0219-4554
EISSN: 1793-6764
DOI: 10.1142/S0219455414500837
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