【摘要】 通过对用于矿山机械的某材料在进行疲劳试验时，测取振动信号，利用频谱、时序方法和灰色系统理论方法对其进行研究，得出诊断裂纹的标准。更多还原

【Abstract】 In this paper,the vibration signals in the fatigue crack growth process in a chinese steel used in a mining machinery were analyzed by the frequency spectrum, the time series and grey system model,and the critical criterion for crack initiation was proposed.更多还原