DAMAGE IDENTIFICATION BY RECURRENCE PLOT AND SINGULAR SPACTRUM
Recurrence plot has been a useful signal processing tool of time-series analysis. In this paper,the recurrence matrix is combined with cross singular entropy to detect structural damage from measured vibration signals. To detect and locate damage,the cross recurrence singular entropy (CRSE) is defined as a new damage feature. The proposed damage identification method is illustrated by the timeseries data from a finite element model of vibrating beam where damage is represented by a more or less concentrated decrease in the element from 0 to 10％. The time-history response series at several separate locations on the beam are used to reconstruct the phase space of the systems dynamics and subsequently generate the recurrence matrix. It is demonstrated that thecross singular entropy of recurrence matrix can distinguish the various damage patterns and local damage influences the local recurrence matrix of the structure. Damage can be therefore identified by using the cross recurrence singular entropy. The damage identification approach presented in the paper is rather generic and permits the applications for more complex structures that are nonlinear.
Damage identification Recurrence plot Time series Cross entropy Singular spectrum
Dong Yang Wei-Xin Ren
Dept. of Civil Engineering,Central SouthUniv.,Changsha,Hunan Province,410075,P.R.China National Engi Dept. of Civil Engineering,Central SouthUniv.,Changsha,Hunan Province,410075,P.R.China National Engi
国际会议
The Eleventh International Symposium on Structural Engineering(第十一届结构工程国际研讨会)
广州
英文
1381-1386
2010-12-01（万方平台首次上网日期，不代表论文的发表时间）