Damage Identification Based on Power Spectral Density Sensitivity Analysis of Structural Responses

Wei Huan Chen; Chang Ying Ding; Bing Quan He; Zhong Rong Lv; Ji Ke Liu

doi:10.4028/www.scientific.net/AMR.919-921.45

Paper Titles

Axial Strains in FRP-Confined Normal- and High-Strength Concrete: An Examination of Strain Measurement Methods
p.23

Comparison of Stress-Strain Relationships of FRP and Actively Confined High-Strength Concrete: Experimental Observations
p.29

Construction Control of a Continuous Beam Arch Composite Bridge
p.35

Construction Technique of Cast In Situ RC Grillage Shear Wall Building Formed with Thermal Insulation Hollow Blocks
p.39

Damage Identification Based on Power Spectral Density Sensitivity Analysis of Structural Responses
p.45

Damage Location Identification of Truss Structure Based on Strain Modal Method
p.51

Design Analysis of Steel Frame for Denitrification through Existing Structure
p.58

Design and Numerical Simulation on Concrete Two-Way Slab Strengthened with Partially Bonded Steel Plate
p.64

Discussion on the Rationality Simplified Calculation Method of Reinforced Concrete Two-Way Slab
p.68

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Damage Identification Based on Power Spectral Density Sensitivity Analysis of Structural Responses

Abstract:

A new method is proposed to identify structural damages based on the power spectral density sensitivity analysis. The responses of the structure under stationary and random excitations are obtained using pseudo excitation method, and then the sensitivities of power spectral density with respect to the structural damage parameters are obtained similarly. Finite element model updating method is adopted to identify the structural damages. A numerical example of a shearing structure demonstrates the satisfactory results obtained from the present method.