Strategic Study of CAE >> 2006, Volume 8, Issue 4
Time Series Diagnosing Analysis for the Fatigue Crack of Large-scale and Heavyburden Supporting Shafts
1. Institute of Vibration Impact & Diagnosis , Hunan University of Science and Technology , Xiangtan , Hunan 411201 , China
2. Mechanical Engineering Department , Henan Polytechnic University , Jiaozuo , Henan 454000 , China
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Abstract
Because of the unobserved sudden fatigue failure of the large-scale and heavyburden supporting shafts, the normal product line is affected seriously. Based on analyzing the relation ship between this type of supporting shafts construction characteristics and vibration signal characteristic, the model of the vibration signal is established by the method of time series.Residual () and normal residue square sum (NRSS) are adopted to identify the fault state, and the degree of supporting shafts' fatigue crack is diagnosed effectively.The result of experiment shows that the method of time series using and NRSS as the index to diagnose the fatigue crack of large-scale and heavyburden supporting shafts is more sensitive and effective than the normal method using time-frequency domain of amplitude, and has very strong practicability.
Keywords
large-scale and heavyburden machine ; supporting shaft ; concealment part ; fatigue crack ; time series
References
[ 1 ] 容永泰.提高回转窑的运转率 (一) [J].中国建材装备, 1996, 5 (1) :11~14 link1
[ 2 ] 李学军, 朱萍玉, 等.大型回转窑托轮轴断裂分析与防治[J].中国安全科学学报, 2003, 13 (4) :60~63 link1
[ 3 ] Li Xuejun, Zhu Pingyu, Liu Deshun.Diagnosis methodfor supporting wheel crack shaft of large_scale rotary kilnwith multi_supporting based on vibration[J].Progress inSafety Science and Technology, 2002 ISSST, Ⅲ:488~491
[ 4 ] 杨峰, 陈敬佑, 等.回转式压缩机振动故障的时间序列分析[J].浙江工学院学报, 1994, 4 (65) :81~84 link1
[ 5 ] 李学军, 王梅松, 等.大型回转窑支承轴断裂在线诊断技术[J].湘潭矿业学院学报, 2003, 18 (1) :60~63 link1
[ 6 ] 杨叔子, 吴雅, 等.时间序列分析的工程应用 (上, 下) [M].武汉:华中理工大学出版社, 1991.256~258
[ 7 ] 魏昶华, 何光逵.用时序法预测滚动轴承工作寿命[A].第四届全国机械设备故障诊断学术会议论文集[C].1994.688~690