Pseudo Strain Energy Density-based Structural Damage Identification
(0) In this paper,a new time-domain method for detecting structural local damage has been developed,which is based on the measured strain signals.The pseudo strain energy density (PSED) is defined and used to build two major damage indexes,the average pseudo strain energy density (APSED) and the average pseudo strain energy density changing rate (APSEDR).A probability and mathematical statistics technique is utilized to derive a standardized damage index.Afterwards,these indexes are used to establish the damage identification strategies for beam structures and plate structures respectively.Furthermore,the wavelet packet transform is used to pre-process the measured dynamic strain signals.Then,the effectivity of the new damage identification method is confirmed by numerical simulations.Finally,a laboratory beam model experiment is conducted to verify this method examine the feasibility and applicability of the new method.
damage detection strain signals time-domain pseudo strain energy density PVDF
CHEN Xiaoqiang ZHU Hongping WANG Dansheng
School of Civil Engineering & Mechanics.Huazhong University of Science & Technology,Wuhan 430074,P.R.China Hubei Key Laboratory of Control Structure.Huazhong University of Science & Technology,Wuhan 430074,P.R.China
国际会议
The 8th International Conference on Damage Assessment of Structures(DAMAS 2009)(第八届结构损伤评价国际学术会议)
北京
英文
71-78
2009-08-03（万方平台首次上网日期，不代表论文的发表时间）