ADAPTIVE DAMAGE TRACKING OF STRUCTURES WITH UNKNOWN EXCITATIONS: EXPERIMENTAL VERIFICATION
Damage identification of structures is an important task of a health monitoring system.In particular,on-line or almost on-line damage tracking of structures will provide valuable information for post disaster emergency responses and management.Recently,a new analysis method,referred to as the adaptive quadratic sum squares error with unknown inputs(AQSSE-UI),has been proposed for on-line identification of structural damages.Simulation results indicate that this approach is capable of not only tracking the structural damages but also identifying the unknown external excitations.In this paper,we present further verifications for the capability of the AQSSE-UI technique in identifying the structural damage using experimental date.Experimental data were obtained from a series of experimental tests using a scaled 3-story building model excited by unknown white noises to the top floor.Different damage scenarios had been simulated and tested.Based on the measured acceleration data and the AQSSE-UI approach,the tracking results for the stiffness of all stories are compared with the stiffness predicted by the finite-element method.Experimental results demonstrate that the AQSSE-IU approach is capable of tracking the structural damage with reasonable accuracy.
Experimental Verification Structural Health Monitoring Damage Tracking of Structures
Hongwei Huang Jann N. Yang Li Zhou
Department of Bridge Engineering,Tongji University,China Department of Civil & Environmental Engineering,University of California,Irvine,USA College of Aerospace Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing,China
国际会议
The World Forum on Smart Materials and Smart Structures Technology(SMSST07)(2007年世界智能材料与智能结构技术论坛)
重庆·南京
英文
2007-05-01（万方平台首次上网日期，不代表论文的发表时间）