EXPERIMENTAL INVESTIGATION OF VERY-HIGH-CYCLE FATIGUE BEHAVIOR FOR A STRUCTURAL STEEL

摘要：

Very-High-Cycle Fatigue (VHCF) test for a medium carbon structural steel (40Cr) has been performed and a stepwise S-N curve was obtained by employing cantilever-type rotary bending fatigue machine with hourglass shape specimen.The S-N curve was well explained as a combination of curves for surface-induced fracture and interior inclusion-induced fracture with fish-eye patterns.The morphology of the fish-eye pattern was illustrated in order to clarify subsurface crack initiation and propagation behavior.

关键词： Very-High-Cycle fatigue crack initiation fish-eye patterns

作者: G.A.Qian Y.S.Hong

作者单位: State Key Laboratory of Nonlinear Mechanics (LNM),Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080,China

会议类型: 国际会议

会议名称: 第二届国际非均质材料力学会议(The Second International Conference on Heterogeneous Material Mechanics)

会议地点: 安徽黄山

会议语种:英文

页码: 1199-1202

在线出版日期: 2008-06-03（万方平台首次上网日期，不代表论文的发表时间）