翻訳と辞書 Words near each other ・ Cobitis paludica ・ Cobitis puncticulata ・ Cobitis punctilineata ・ Cobitis stephanidisi ・ Cobitis strumicae ・ Cobitis trichonica ・ Cobitis turcica ・ Cobitis vardarensis ・ Cobitis vettonica ・ Cobitis zanandreai ・ COBL ・ Cobla ・ Cobla esparsa ・ Coble ・ Coble (surname) ・ Coble creep ・ Coble curve ・ Coble hypersurface ・ Coble surface ・ Coble variety ・ Coble, U.S. Virgin Islands ・ Coblentz ・ Coblentz (lunar crater) ・ Coblentz (Martian crater) ・ Coblentz Peak ・ Coblentz Society ・ Cobles ・ Cobleskill ・ Cobleskill (town), New York ・ Cobleskill (village), New York Dictionary Lists mini英和辞書 mini和英辞書 Webster 1913 Latin-English FOLDOC Wikipedia English ウィキペディア

翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Coble creep ： ウィキペディア英語版 Coble creep Coble creep, a form of diffusion creep, is a mechanism for deformation of crystalline solids. Coble creep occurs through the diffusion of atoms in a material along the grain boundaries, which produces a net flow of material and a sliding of the grain boundaries. Coble creep is named after Robert L. Coble, who first reported his theory of how materials creep over time in 1962 in the Journal of Applied Physics (). The strain rate in a material experiencing Coble creep is given by: :$\backslash frac=\; \backslash frac\; D\_\; e^$ where *$\backslash sigma$ is the applied stress *$d$ is the average grain boundary diameter *$D\_$ is the diffusion coefficient in the grain boundary *$-Q\_$ is the activation energy for Coble creep *$R$ is the molar gas constant *$T$ is the temperature in kelvins Note that in Coble creep, the strain rate $\backslash frac$ is proportional to the applied stress $\backslash sigma$; the same relationship is found for Nabarro-Herring creep. However, the two mechanisms differ in their relationship between the strain rate and grain size $d$. In Coble creep, the strain rate is proportional to $d^$, whereas the strain rate in Nabarro-Herring creep is proportional to $d^$. Researchers commonly use these relationships to determine which mechanism is dominant in a material; by varying the grain size and measuring how the strain rate is affected, they can determine the value of $n$ in $\backslash frac~\backslash alpha\; ~d^n$ and conclude whether Coble or Nabarro-Herring creep is dominant(). ==References== (1) Meyers and Chawla (1999): "Mechanical Behavior of Materials," 555-557. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Coble creep」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.