A cumulative damage model for fatigue life estimation of high-strength steels in high-cycle and very-high-cycle fatigue regimes

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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.
发表期刊	FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
	2012-07-01
卷号	35 期号:7 页码:638-647
ISSN	8756-758X
摘要	A 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.
关键词	Crack 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
学科领域	疲劳与断裂力学
URL	查看原文
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000305279200005
项目资助者	The authors gratefully acknowledge the support of the National Natural Science Foundations of China (grant no 10721202 and 11172304).
课题组名称	LNM金属材料微结构与力学性能
论文分区	二类/Q2
引用统计	被引频次：60[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/46659
专题	非线性力学国家重点实验室
通讯作者	Hong, Y; Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China.
推荐引用方式 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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