An Identification Method of Appearances and Expansion of Fatigue Crack in the Wind Turbine Blade Based on Fractal Feature
In this work an efficient and simplified method for crack identification in wind turbine blade has been developed based on fractai dimension.Firstly,the algorithm is studied on the calculation of the correlation dimension of acoustic emission signals,and an analysis of these equations makes it possible to identify cracks.Then it turns out that the complexity could vary with different crock expansion conditions,i.e.reduction and augmentation of the correlation dimension due to the occurrence of a crack by the fatigue experiment.Finally,the proposed detection methodology is compared to wavelet analysis.It is testified that the method exploits both the typical steady expansion of the crack and the appearance phenomenon due to the presence of crack.
Wind turbine blade fractal dimension fatigue crack fault diagnosis
ZHOU Bo CHEN Changzheng GU Quan LIU Huan
Architectural and Engineering Institute,Shenyang University of Technology,China Mechanical and Engineering Institute,Shenyang University of Technology,China
国际会议
广州
英文
2123-2126
2012-11-16（万方平台首次上网日期，不代表论文的发表时间）