【摘要】 介绍了机械零部件P-S-N曲线的意义和用途及用实验方法确定机械零部件的P-S-N曲线的两个步骤。着重讨论了疲劳试验的两种重要方法。更多还原

【Abstract】 The paper introduces the meaning and uses of P-S-N curve of mechanical part and components, and two steps of determining P-S-N curve by experiment-measurement of fatigue limit, determination of P-S-N medium endurance area, discusses emphatically the two kinds ofimportant methods of fatigue test--up-and-down method and group method, and describes how to handle the experimental findings under two conditions that fatigue endurance is lognormal distribution or Weibull distribution.更多还原