| Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime |
| Sun CQ(孙成奇) ; Song QY; Hu YP(胡远培); Wei YJ(魏宇杰)
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| 发表期刊 | INTERNATIONAL JOURNAL OF FATIGUE
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| 2018-12-01
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| 卷号 | 117页码:9-12 |
| ISSN | 0142-1123
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| 摘要 | An intermittent loading path (i.e. a pause duration follows after a loading pulse) is broadly employed in a ultrasonic fatigue test to minimize the effect of self-heating in specimens. The exact influence of such intermittent loading strategy remains elusive. We report here a significant fatigue life improvement of a high strength steel in very high cycle fatigue regime subjected to intermittent loading, in contrast to that without the pause duration although the crack initiation mechanism remains the same. This phenomenon is attributed to the strain aging by the numerous low stress amplitude cycles under intermittent loading, which strengthens the local region ahead of the initiated crack tip by the former high stress amplitude cycles and improves the fatigue life. |
| 关键词 | Very high cycle fatigue
High strength steels
Intermittent loading
Ultrasonic fatigue technique
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| DOI | 10.1016/j.ijfatigue.2018.07.033
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| URL | 查看原文
|
| 收录类别 | SCI
; EI
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| 语种 | 英语
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| WOS记录号 | WOS:000449240200002
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| 关键词[WOS] | LOW-CARBON STEEL
; METALLIC MATERIALS
; FREQUENCY
; BEHAVIOR
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| WOS研究方向 | Engineering, Mechanical
; Materials Science, Multidisciplinary
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| WOS类目 | Engineering
; Materials Science
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| 项目资助者 | National Natural Science Foundation of China [11572325, 11425211]
; Strategic Priority Research Program of the Chinese Academy of Sciences [XDB22040503, XDB22020201, XDB22020200]
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| 论文分区 | 一类
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| 力学所作者排名 | 1
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| 引用统计 |
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| 文献类型 | 期刊论文
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| 条目标识符 | http://dspace.imech.ac.cn/handle/311007/78137
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| 专题 | 非线性力学国家重点实验室
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| 作者单位 | Chinese Acad Sci, State Key Lab Nonlinear Mech, Inst Mech, Beijing 100190, Peoples R China; Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
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推荐引用方式
GB/T 7714 |
Sun CQ,Song QY,Hu YP,et al. Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime[J]. INTERNATIONAL JOURNAL OF FATIGUE,2018,117:9-12.
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| APA |
孙成奇,Song QY,胡远培,&魏宇杰.(2018).Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime.INTERNATIONAL JOURNAL OF FATIGUE,117,9-12.
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| MLA |
孙成奇,et al."Effects of intermittent loading on fatigue life of a high strength steel in very high cycle fatigue regime".INTERNATIONAL JOURNAL OF FATIGUE 117(2018):9-12.
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