An Evaluation of Damage Features Extraction from Attractors in Structural Health Monitoring
Structural health monitoring provides accurate information about structures safety and integrity. The vibration-based structural health monitoring involves extracting a feature which robustly quantifies damage induced change to the structure. Recent work has focused on damage features extracted from the state space attractor of the structural response. Some of these features involve prediction error and local variance ratio. In the present paper, a five degree of freedom spring damper system forced by a Lorenz excitation is used to evaluate these two typical damage features. Their ability of identification damage level and location is characterized and compared.
structural health monitoring damage feature attractor prediction error
XUChao WANG Dong
College of Astronautics, Northwestern Polytechnical University, Xian 710072, China
国际会议
上海
英文
738-741
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）