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A cumulative damage model for fatigue life estimation of high-strength steels in high-cycle and very-high-cycle fatigue regimes
Sun CQ(孙成奇); Xie JJ(谢季佳); Zhao AG(赵爱国); Lei ZQ(雷铮强); Hong YS(洪友士); Hong, Y; Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China.
Source PublicationFATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
2012-07-01
Volume35Issue:7Pages:638-647
ISSN8756-758X
AbstractA cumulative fatigue damage model is presented to estimate fatigue life for high-strength steels in high-cycle and very-high-cycle fatigue regimes with fish-eye mode failure, and a simple formula is obtained. The model takes into account the inclusion size, fine granular area (FGA) size, and tensile strength of materials. Then, the equivalent crack growth rate of FGA is proposed. The model is used to estimate the fatigue life and equivalent crack growth rate for a bearing steel (GCr15) of present investigation and four high-strength steels in the literature. The equivalent crack growth rate of FGA is calculated to be of the order of magnitude of 10-1410-11 m/cycle. The estimated results accord well with the present experimental results and prior predictions and experimental results in the literature. Moreover, the effect of inclusion size on fatigue life is discussed. It is indicated that the inclusion size has an important influence on the fatigue life, and the effect is related to the relative size of inclusion for FGA. For the inclusion size close to the FGA size, the former has a substantial effect on the fatigue life. While for the relatively large value of FGA size to inclusion size, it has little effect on the fatigue life.
KeywordCrack Growth Rate Fatigue Damage Fish-eye Fracture High-cycle Fatigue Very-high-cycle Fatigue Life Estimation Subsurface Crack Initiation Chromium Bearing Steel S-n Curve Gigacycle Fatigue Part i Mechanism Behavior Failure Inclusions Size
Subject Area疲劳与断裂力学
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000305279200005
Funding OrganizationThe authors gratefully acknowledge the support of the National Natural Science Foundations of China (grant no 10721202 and 11172304).
DepartmentLNM金属材料微结构与力学性能
Classification二类/Q2
Citation statistics
Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/46659
Collection非线性力学国家重点实验室
Corresponding AuthorHong, Y; Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Sun CQ,Xie JJ,Zhao AG,et al. A cumulative damage model for fatigue life estimation of high-strength steels in high-cycle and very-high-cycle fatigue regimes[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2012,35(7):638-647.
APA 孙成奇.,谢季佳.,赵爱国.,雷铮强.,洪友士.,...&Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China..(2012).A cumulative damage model for fatigue life estimation of high-strength steels in high-cycle and very-high-cycle fatigue regimes.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,35(7),638-647.
MLA 孙成奇,et al."A cumulative damage model for fatigue life estimation of high-strength steels in high-cycle and very-high-cycle fatigue regimes".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES 35.7(2012):638-647.
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