Structural Damage Detection Using Inner Product Vector and Low Pass Filter Technique

Le Wang; Zhi Chun Yang

doi:10.4028/www.scientific.net/AMM.204-208.2942

Paper Titles

Cyclic Testing of Bolted Flange Plate and Double Split Tee Type Weak-Axis Steel Moment Connections
p.2913

Cyclic Testing of Welded Free Flange Type and Welded Flange Plate Type Weak-Axis Steel Moment Connections
p.2922

Development and Application of Spatial Analysis and Management System of Dammed Lake Based on 3D GIS
p.2932

Ecological Farm Masonry Structure Detection & Appraisal in Sichuan Emei
p.2937

Structural Damage Detection Using Inner Product Vector and Low Pass Filter Technique
p.2942

Experimental Study of Damage Identification on Space Rigid Frame Structure
p.2947

Application of the Fuzzy Analytic Hierarchy Process in Pipeline Risk Factor Weight
p.2951

Study on Hybrid Control Method of Mega-Sub Controlled Structure Subjected to Seismic Action
p.2955

Study on the Safety Monitoring and Control Technology of Artificial Island Construction on Radiating Sandbar
p.2962

HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 204-208Structural Damage Detection Using Inner Product...

Structural Damage Detection Using Inner Product Vector and Low Pass Filter Technique

Abstract:

The inner product vector (IPV) was proposed in our previous research as a damage detection algorithm which uses cross correlation functions between vibration responses under band pass white noise excitation. It was verified that the IPV of a structure is a weighted summation of the mode shapes of the structure and the weighing factors for each modes are different. Structural damage detection examples in our previous research shown that the damage location can be correctly detected if the bandwidth of the band pass white noise excitation only covers the fundamental natural frequency of the structure. However, the bandwidth of the band pass white noise excitation may cover first several natural frequencies of the structure in practice. This paper just investigates the damage detection method using IPV under the situation when the bandwidth of the band pass white noise excitation may cover first several natural frequencies of the structure, i.e. the hybrid method using IPV and low pass filter technique. Firstly, the theory of IPVs and the damage detection method using IPV are reviewed shortly. Then, the hybrid method using IPV and low pass filter technique is introduced. Finally, experimental damage detection example of a shear frame structure is presented to illustrate the method proposed in this paper.