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Fractal characterization of ceramic crack patterns after thermal shocks
Qi F1,2; Meng SH3; Song F(宋凡)4; Guo H5,6; Xu XH(许向红)4; Shao YF(邵颖峰)4; Chen Y1,2
Source PublicationJOURNAL OF THE AMERICAN CERAMIC SOCIETY
2019-06-01
Volume102Issue:6Pages:3641-3652
ISSN0002-7820
Abstract

This work utilized a combination of experimental evidence and fractal geometric method to assess the effect of crack extension concerning the thermal shock on residual strength of ceramics. Sintered alumina (Al2O3) ceramic slabs were bundled and quenched in water under different thermal shock temperatures. The fractal dimension of thermal shock crack patterns on the interior surface and the cooled surface was calculated by the Box-counting method. Fracture energy of a fractal pattern of microcracks in quasi-brittle solids was employed to explain the relationship between crack length and fractal dimensions. The results show that if the crack propagation has the same crack length but a larger fractal dimension, it will absorb more fracture energy. The thermal shock crack patterns of Al2O3 ceramics with different grain sizes were analyzed, and the smaller grain size ceramic had a higher fractal dimension of crack patterns than the larger one.

Keywordbrittle materials crack growth fractal geometry thermal shock resistance
DOI10.1111/jace.16196
Indexed BySCI
Language英语
WOS IDWOS:000465347700059
WOS KeywordNUMERICAL SIMULATIONS ; PROPAGATION ; STRENGTH ; BEHAVIOR
WOS Research AreaMaterials Science
WOS SubjectMaterials Science, Ceramics
Funding ProjectNational Natural Science Foundation of China[11402156] ; National Natural Science Foundation of China[61503269] ; National Natural Science Foundation of China[51275326] ; National Basic Research Program of China[2015CB655200] ; Natural Science Foundation of Jiangsu Province[BK20140301] ; Natural Science Foundation of the Higher Education Institutions of Jiangsu Province[14KJB130004] ; Postdoctoral Research Funding of Soochow University[32317453]
Funding OrganizationNational Natural Science Foundation of China ; National Basic Research Program of China ; Natural Science Foundation of Jiangsu Province ; Natural Science Foundation of the Higher Education Institutions of Jiangsu Province ; Postdoctoral Research Funding of Soochow University
Classification一类
Ranking3
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Document Type期刊论文
Identifierhttp://dspace.imech.ac.cn/handle/311007/78261
Collection非线性力学国家重点实验室
Corresponding AuthorGuo H
Affiliation1.Soochow Univ, Sch Mech & Elect Engn, Suzhou, Peoples R China
2.Soochow Univ, Collaborat Innovat Ctr Suzhou Nano Sci & Technol, Suzhou, Peoples R China
3.Harbin Inst Technol, Sci & Technol Adv Composites Special Environm Lab, Harbin, Heilongjiang, Peoples R China
4.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing, Peoples R China
5.Soochow Univ, Jiangsu Prov Key Lab Adv Robot, Suzhou, Peoples R China
6.Soochow Univ, Robot & Microsyst Ctr, Suzhou, Peoples R China
Recommended Citation
GB/T 7714
Qi F,Meng SH,Song F,et al. Fractal characterization of ceramic crack patterns after thermal shocks[J]. JOURNAL OF THE AMERICAN CERAMIC SOCIETY,2019,102(6):3641-3652.
APA Qi F.,Meng SH.,Song F.,Guo H.,Xu XH.,...&Chen Y.(2019).Fractal characterization of ceramic crack patterns after thermal shocks.JOURNAL OF THE AMERICAN CERAMIC SOCIETY,102(6),3641-3652.
MLA Qi F,et al."Fractal characterization of ceramic crack patterns after thermal shocks".JOURNAL OF THE AMERICAN CERAMIC SOCIETY 102.6(2019):3641-3652.
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