Effects of loading condition on very-high-cycle fatigue behaviour and dominant variable analysis

被引：26
作者：
Lei ZhengQiang [1 ,2 ]
Xie JiJia [1 ]
Sun ChengQi [1 ]
Hong YouShi [1 ]
机构：
[1] Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
[2] PetroChina Pipeline R&D Ctr, Langfang 065000, Peoples R China
来源：
SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY | 2014年 / 57卷 / 01期
基金：
中国国家自然科学基金;
关键词：
very-high-cycle fatigue; FGA; loading condition; life scatter; inclusion; HIGH-STRENGTH STEELS; SUBSURFACE CRACK INITIATION; INCLUSION SIZE; LIFE REGIME; PART I; PROPAGATION; MECHANISM; FAILURE; MICROSTRUCTURE; SENSITIVITY;
D O I：
10.1007/s11433-013-5332-x
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
The specimens of a high carbon chromium steel were quenched and tempered at 150A degrees C, 180A degrees C and 300A degrees 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 Delta K (FGA) to the life of VHCF crack initiation.
引用
收藏
页码：74 / 82
页数：9
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