| Crack patterns corresponding to the residual strength plateau of ceramics subjected to thermal shock |
| Hou HL; Wu XF; Yan P; Song F(宋凡) ; Li J; Jiang CP; Jiang, CP; Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China.
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| 发表期刊 | ACTA MECHANICA SINICA
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| 2012-06-01
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| 卷号 | 28期号:3页码:670-674 |
| ISSN | 0567-7718
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| 摘要 | The formation mechanism of the residual strength plateau of ceramics subjected to thermal shock is addressed. A set of thermal shock experiments of 99Al(2)O(3) are conducted, where the thin specimens of 1 mmx10 mmx50 mm exhibit parallel through edge cracks, and thus permit quantitative measurements of the crack patterns. The cracks evolve with the severity of thermal shock. It is found that there is a correlation between the length and density of the thermal shock cracks. The increase of crack length weakens the residual strength, whereas the increase of crack density improves it. In a considerably wide temperature range, the two contrary effects just counteract each other;consequently a plateau appears in the variation curve of the residual strength. A comparison between the numerical and experimental results of the residual strength is made, and they are found in good agreement. This work is helpful to a deep understanding of the thermal shock failure of ceramics. |
| 关键词 | Ceramics
Thermal Shock
Crack Patterns
Residual Strength
Stress Intensity Factor
Functionally Graded Ceramics
Propagation
Behavior
Fracture
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| 学科领域 | 极端条件下的材料和结构
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| URL | 查看原文
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| 收录类别 | SCI
; EI
; CSCD
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| 语种 | 英语
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| WOS记录号 | WOS:000306214300012
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| 项目资助者 | The project was supported by the National Natural Science Foundations of China (10972020, 11061130550), the Fundamental Research Funds for the Central Universities and the National Agency for Research of France (International project T-shock).
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| 课题组名称 | LNM生物材料微结构和力学性能
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| 论文分区 | 二类
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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/311007/46686
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| 专题 | 非线性力学国家重点实验室
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| 通讯作者 | Jiang, CP; Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China. |
推荐引用方式
GB/T 7714 |
Hou HL,Wu XF,Yan P,et al. Crack patterns corresponding to the residual strength plateau of ceramics subjected to thermal shock[J]. ACTA MECHANICA SINICA,2012,28,3,:670-674.
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| APA |
Hou HL.,Wu XF.,Yan P.,Song F.,Li J.,...&Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China..(2012).Crack patterns corresponding to the residual strength plateau of ceramics subjected to thermal shock.ACTA MECHANICA SINICA,28(3),670-674.
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| MLA |
Hou HL,et al."Crack patterns corresponding to the residual strength plateau of ceramics subjected to thermal shock".ACTA MECHANICA SINICA 28.3(2012):670-674.
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