IMECH-IR  > 力学所知识产出(1956-2008)
Collective damage of short cracks and fatigue life estimation for metallic materials
Hong YS(洪友士); Qiao Y; Liu N; Zheng X; Hong, Y (reprint author), Chinese Acad Sci, Inst Mech, Lab Non Linear Mech Continuous Med, Beijing 100080, Peoples R China.
Source PublicationFATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4
1999
Conference Name7th International Fatigue Congress (Fatigue '99)
Conference DateJUN 08-12, 1999
Conference PlaceBeijing, PEOPLES R CHINA
AbstractDuring the primary stage of the fatigue process in most metallic materials, fatigue damage is dominated by the behaviour of short cracks. In this paper, the method considering the balance of crack number density was adopted to evaluate the collective behaviour of dispersive short-fatigue-cracks. The transition point between short and long crack regimes is therefore investigated. The theoretical results show the variation of the transition point with grain size and grain-boundary obstacle effect, indicating the fatigue life inversely proportional to grain size. In addition, a method of dimensional analysis is used in this investigation and similar result showing fatigue life versus grain size is obtained. The theoretical results are in good agreement with experimental measurements of a stainless steel and an Al-Mg alloy.
WOS IDWOS:000166896200044
ISBN7-04-007582-2
Indexed ByCPCI-S
Language英语
Citation statistics
Document Type会议论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/58964
Collection力学所知识产出(1956-2008)
Corresponding AuthorHong, Y (reprint author), Chinese Acad Sci, Inst Mech, Lab Non Linear Mech Continuous Med, Beijing 100080, Peoples R China.
Recommended Citation
GB/T 7714
Hong YS,Qiao Y,Liu N,et al. Collective damage of short cracks and fatigue life estimation for metallic materials[C]FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4,1999.
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