Structural Damage Localization Using D-S Evidence Theory
Damage localization is a key issue in the Structural Health Monitoring (SHM). In order to enhance the accuracy of damage localization, an approach based on D-S evidence theory is studied in this paper. First, damage results obtained from the modal strain energy change ratio (MSECR) method and the multiple damage location assurance criterion (MDLAC) method are regarded as two independent information sources, respectively. And then, the D-S evidence theory-based information fusion technique is employed to integrate these two results and make a final decision. To compare the damage identification results under different methods, a practical damage evaluation indicator is presented. Numerical study on a cantilever beam is carried out to verify the proposed method. Results indicate that the damage evaluation indicators calculated by D-S evidence theory are superior to the single method. That is to say, structural damage identification method based on D-S evidence theory performs very well in determining the damage locations.
Structural health monitoring (SHM) damage localization D-S evidence theory damage evaluation indicator
Jianhua Zhao Ling Zhang
State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace, Xian Jiaotong University, Xian 710049, China
国际会议
上海
英文
999-1003
2011-10-21（万方平台首次上网日期，不代表论文的发表时间）