| 16MnR钢中微裂纹的疲劳扩展 |
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| 引用本文： | 潘家祯,包复华,周又生,琚定一.16MnR钢中微裂纹的疲劳扩展[J].华东理工大学学报(自然科学版),1989(1). |
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| 作者姓名： | 潘家祯 包复华 周又生 琚定一 |
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| 作者单位： | 华东化工学院化工机械研究所，上海化工专科学校，华东化工学院化工机械研究所，华东化工学院化工机械研究所 国内访问学者 |
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| 摘 要： | 对含有不同微孔缺陷尺寸的16MnR试棒,在低周疲劳下研究了裂纹扩展的规律。试件初始缺陷尺寸对疲劳寿命的影响,可用垂直于载荷方向缺陷截面积的四次方根来表达。探讨了微裂纹扩展速率和描述低周疲劳的Manson-Coffin公式之间的相互关系。
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| 关 键 词： | 裂纹扩展 疲劳试验 疲劳机理 微裂纹 低周疲劳 |
Investigation of Small Crack Fatigue Propagation in 16 MnR Steel |
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| Pan Jiazhen,Bao Fuhua,Zhou Yousheng Ju Dingyi.Investigation of Small Crack Fatigue Propagation in 16 MnR Steel[J].Journal of East China University of Science and Technology,1989(1). |
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| Authors: | Pan Jiazhen Bao Fuhua Zhou Yousheng Ju Dingyi |
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| Institution: | Research Institute of Process Equipment and Pressure Vessels |
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| Abstract: | The process of small crack low cycle fatigue propagation was investigated with 16 MnR low carbon manganese steel. Experiments were carried out with bar specimens which contain small surface holes of different diameter. The effect of original defect size on the fatigue life can be described with the fourth root of the defect area perpendicular to the loading direction. The relation between the formula of crack propagating rates and Manson-Coffin equation has been discussed. |
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| Keywords: | crack propagation fatigue test fatigue mechanism small crack low cycle fatigue |
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