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通过滚子链常用链板材料不同宽度系列试样的成组疲劳试验，得出了不同宽度试样的Ｒ－Ｓ－Ｎ曲线；求出了不同预期寿命时尺寸系数的分布，为滚子链疲劳可靠性设计提供了重要的基础数据
The R-S-N curves of specimens with different widths were obtained by the fatigue test of the series of specimens of different widths commonly used in the chain of roller chain. The distribution of the size coefficient for different life expectancy was obtained. Fatigue reliability design provides important basic data