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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
Source PublicationMATERIALS RESEARCH EXPRESS
2019-04-01
Volume6Issue:4Pages:AR046536
ISSN2053-1591
AbstractIn 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.
Keywordspecimen geometry loading condition control volume fatigue life metallic materials
DOI10.1088/2053-1591/aafbb8
Indexed BySCI ; EI
Language英语
WOS IDWOS:000456282500005
WOS KeywordHIGHLY-STRESSED-VOLUME ; CYCLE FATIGUE ; SIZE ; STRENGTH ; STEEL ; NOTCH ; BEHAVIOR ; FAILURE
WOS Research AreaMaterials Science, Multidisciplinary
WOS SubjectMaterials Science
Funding OrganizationNational 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]
ClassificationQ4
Ranking1
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78503
Collection非线性力学国家重点实验室
Affiliation1.{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
Recommended Citation
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.
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