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Evaluating Young's modulus of porous nuclear graphite by a novel multi-scale method
Yang, X; Tsang, DKL
2017
Source PublicationJOURNAL OF MATERIALS SCIENCE
ISSN1573-4803
Volume52Issue:17Pages:10959-10971
Subtype期刊论文
AbstractNuclear graphite has served as neutron moderator, reflector and structural material in various nuclear reactors due to its excellent irradiation performance and mechanical properties at high temperature. However, the microstructure of nuclear graphite contains over 10% porosity by volume. During the lifetime of reactors, the porosity of nuclear graphite will be increased due to the irradiation-induced volume changes and/or radiolytic oxidation. Consequently, it is important to predict the effect of porosity on the mechanical properties of nuclear graphite. In this paper, a novel multi-scale method was used to study the effect of porosity on Young's modulus. Numerical results suggested that Young's modulus versus porosity can be predicted by the Knudsen law. Then, the influence of different pore distributions on Young's modulus was analysed. Finally, Young's modulus with different pore sizes and the effect of pore shape were studied. And a relationship between decay coefficients in the Knudsen law and the pore shape ratios was found.
KeywordEngineering Test Reactor Thermal-expansion Grade Graphite Porosity Simulation Element
DOI10.1007/s10853-017-1259-3
WOS KeywordENGINEERING TEST REACTOR ; THERMAL-EXPANSION ; GRADE GRAPHITE ; POROSITY ; SIMULATION ; ELEMENT
Indexed BySCI
Language英语
Citation statistics
Document Type期刊论文
Identifierhttp://ir.sinap.ac.cn/handle/331007/28645
Collection中科院上海应用物理研究所2011-2018年
Recommended Citation
GB/T 7714
Yang, X,Tsang, DKL. Evaluating Young's modulus of porous nuclear graphite by a novel multi-scale method[J]. JOURNAL OF MATERIALS SCIENCE,2017,52(17):10959-10971.
APA Yang, X,&Tsang, DKL.(2017).Evaluating Young's modulus of porous nuclear graphite by a novel multi-scale method.JOURNAL OF MATERIALS SCIENCE,52(17),10959-10971.
MLA Yang, X,et al."Evaluating Young's modulus of porous nuclear graphite by a novel multi-scale method".JOURNAL OF MATERIALS SCIENCE 52.17(2017):10959-10971.
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