A method for evaluating the effects of specimen geometry and loading condition on fatigue life of metallic materials

doi:10.1088/2053-1591/aafbb8

CORC > 力学研究所 > 中国科学院力学研究所 > 非线性力学国家重点实验室

	A method for evaluating the effects of specimen geometry and loading condition on fatigue life of metallic materials
	Sun CQ(孙成奇); Song QY
刊名	MATERIALS RESEARCH EXPRESS
	2019-04-01
卷号	6 期号:4 页码:AR046536
关键词	specimen geometry loading condition control volume fatigue life metallic materials
ISSN号	2053-1591
DOI	10.1088/2053-1591/aafbb8
英文摘要	In this paper, the effects of specimen geometry and loading condition on fatigue life are investigated based on statistical analysis and control volume concept. A probabilistic control volume method is developed for correlating the fatigue life of specimens with different control volumes. The predicted P-S-N curves accord with the experimental data for the titanium alloy Ti-6Al-2Sn-2Zr-3Mo-X and the high strength steel JIS SUJ2 in literature. The relative error of the predicted fatigue life at 50% survival probability to that directly analyzed from the conventional testing method is -18.7% for the specimens of titanium alloy. The paper also indicates that the determination of the control volume should be based on the fatigue failure mechanism of specimens, which is appropriate to use the control volume for the interior induced fatigue failure and the control surface with a certain thickness for the surface induced fatigue failure.
分类号	Q4
WOS关键词	HIGHLY-STRESSED-VOLUME ; CYCLE FATIGUE ; SIZE ; STRENGTH ; STEEL ; NOTCH ; BEHAVIOR ; FAILURE
WOS研究方向	Materials Science, Multidisciplinary
语种	英语
WOS记录号	WOS:000456282500005
资助机构	National Key Research and Development Program of China 'Genera Design, Construction and Sea Trial of Full Ocean Deep Manned Submersible' [2016YFC0300600] ; Chinese Academy of Sciences [XDB22040503, XDB22020201, XDB22020200, 237099000000170004]
其他责任者	Sun, CQ
内容类型	期刊论文
源URL	[http://dspace.imech.ac.cn/handle/311007/78503]
专题	力学研究所_非线性力学国家重点实验室
作者单位	1.{Sun, Chengqi、Song, Qingyuan} Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China 2.{Sun, Chengqi、Song, Qingyuan} Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun CQ,Song QY. A method for evaluating the effects of specimen geometry and loading condition on fatigue life of metallic materials[J]. MATERIALS RESEARCH EXPRESS,2019,6(4):AR046536.
APA	孙成奇,&Song QY.(2019).A method for evaluating the effects of specimen geometry and loading condition on fatigue life of metallic materials.MATERIALS RESEARCH EXPRESS,6(4),AR046536.
MLA	孙成奇,et al."A method for evaluating the effects of specimen geometry and loading condition on fatigue life of metallic materials".MATERIALS RESEARCH EXPRESS 6.4(2019):AR046536.