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Experiments and numerical simulations of thermal shock crack patterns in thin circular ceramic specimens
Liu YX; Wu XF; Guo QK; Jiang CP; Song F(宋凡); Li J; Song, F (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Source PublicationCERAMICS INTERNATIONAL
2015-01
Volume41Issue:1Pages:1107-1114
ISSN0272-8842
AbstractAn attempt was made to explore the formation mechanism of thermal shock crack patterns in ceramics and to develop quantitative numerical simulations. A set of experiments on thin circular ceramic specimens yielded two-dimensional readings of thermal shock crack patterns with periodical and hierarchical characteristics. The numerical simulations of the thermal shock crack patterns are based on the minimum potential energy principle, where the convective heat transfer coefficient at high temperatures, which is difficult to measure, was inversely estimated by the crack spacing, which is easy to measure. Numerical simulation results were in good agreement with the experimental data. Several interesting thermal shock crack evolution phenomena were found. Two stability criteria of crack propagation, i.e. the minimum potential energy principle and the fracture mechanics bifurcation theory, were compared. It was found that the two criteria verify and complement each other. The present study leads to an improved understanding of the formation and evolution of thermal shock crack patterns in ceramics and can help engineers to assess the thermal shock failure of practical ceramic components. (C) 2014 Elsevier Ltd and Techna Group S.r.l. All rights reserved.
KeywordCeramics Thermal Shock Crack Patterns Numerical Simulations
Subject AreaMaterials Science
DOI10.1016/j.ceramint.2014.09.036
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Indexed BySCI ; EI
Language英语
WOS IDWOS:000346216500029
Funding OrganizationThis work was supported by the National Natural Science Foundation of China (Grants nos. 11172023 and 11232013), the Fundamental Research Funds for the Central Universities and funding from the French ANR program T-Shock ANR-10-INTB-0915.
DepartmentLNM生物材料微结构和力学性能
Classification一类
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/49596
Collection非线性力学国家重点实验室
Corresponding AuthorSong, F (reprint author), Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China.
Recommended Citation
GB/T 7714
Liu YX,Wu XF,Guo QK,et al. Experiments and numerical simulations of thermal shock crack patterns in thin circular ceramic specimens[J]. CERAMICS INTERNATIONAL,2015,41(1):1107-1114.
APA Liu YX.,Wu XF.,Guo QK.,Jiang CP.,Song F.,...&Song, F .(2015).Experiments and numerical simulations of thermal shock crack patterns in thin circular ceramic specimens.CERAMICS INTERNATIONAL,41(1),1107-1114.
MLA Liu YX,et al."Experiments and numerical simulations of thermal shock crack patterns in thin circular ceramic specimens".CERAMICS INTERNATIONAL 41.1(2015):1107-1114.
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