Effects of loading condition on very-high-cycle fatigue behaviour and dominant variable analysis |
| |
| Authors: | ZhengQiang Lei JiJia Xie ChengQi Sun YouShi Hong |
| |
| Institution: | 1. State Key Laboratory of Nonlinear Mechanics, Institute of Mechanics, Chinese Academy of Sciences, Beijing, 100190, China
2. PetroChina Pipeline R&D Center, Langfang, 065000, China
|
| |
| Abstract: | The specimens of a high carbon chromium steel were quenched and tempered at 150°C, 180°C and 300°C. Such specimens were tested via rotating bending and a push-pull type of axial loading to investigate the influences of loading condition on the behaviour of very-high-cycle fatigue (VHCF). Experimental results show the different influences of inclusion size on the fatigue life for the two loading conditions. Predominant factors and mechanism for the fine-granular-area (FGA) of crack origin were discussed. In addition, a reliability analysis based on a modified Tanaka-Mura model was carried out to evaluate the sensitivity of inclusion size, stress, and ΔK FGA to the life of VHCF crack initiation. |
| |
| Keywords: | very-high-cycle fatigue FGA loading condition life scatter inclusion |
| 本文献已被 CNKI SpringerLink 等数据库收录！ |
|
