| 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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| Source Publication | ACTA MECHANICA SINICA
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| 2012-06-01 | |
| Volume | 28Issue:3Pages:670-674 |
| ISSN | 0567-7718 |
| Abstract | 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. |
| Keyword | Ceramics Thermal Shock Crack Patterns Residual Strength Stress Intensity Factor Functionally Graded Ceramics Propagation Behavior Fracture |
| Subject Area | 极端条件下的材料和结构 |
| URL | 查看原文 |
| Indexed By | SCI ; EI ; CSCD |
| Language | 英语 |
| WOS ID | WOS:000306214300012 |
| Funding Organization | 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). |
| Department | LNM生物材料微结构和力学性能 |
| Classification | 二类 |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/46686 |
| Collection | 非线性力学国家重点实验室 |
| Corresponding Author | Jiang, CP; Beihang Univ, Sch Aeronaut Sci & Engn, Beijing 100191, Peoples R China. |
| Recommended Citation 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. |
| 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. |
| 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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