Evaluating Young's modulus of porous nuclear graphite by a novel multi-scale method
Yang, X; Tsang, DKL
2017
发表期刊JOURNAL OF MATERIALS SCIENCE
ISSN1573-4803
卷号52期号:17页码:10959-10971
文章类型期刊论文
摘要Nuclear 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.
关键词Engineering Test Reactor Thermal-expansion Grade Graphite Porosity Simulation Element
DOI10.1007/s10853-017-1259-3
关键词[WOS]ENGINEERING TEST REACTOR ; THERMAL-EXPANSION ; GRADE GRAPHITE ; POROSITY ; SIMULATION ; ELEMENT
收录类别SCI
语种英语
引用统计
文献类型期刊论文
条目标识符http://ir.sinap.ac.cn/handle/331007/28645
专题中科院上海应用物理研究所2011-2018年
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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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