Knowledge Management System of Institue of Mechanics, CAS
| 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.
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| Source Publication | FATIGUE '99: PROCEEDINGS OF THE SEVENTH INTERNATIONAL FATIGUE CONGRESS, VOLS 1-4 |
| 1999 | |
| Conference Name | 7th International Fatigue Congress (Fatigue '99) |
| Conference Date | JUN 08-12, 1999 |
| Conference Place | Beijing, PEOPLES R CHINA |
| Abstract | During 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 ID | WOS:000166896200044 |
| ISBN | 7-04-007582-2 |
| Indexed By | CPCI-S |
| Language | 英语 |
| Citation statistics | |
| Document Type | 会议论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/58964 |
| Collection | 力学所知识产出(1956-2008) |
| Corresponding Author | Hong, 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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