翻訳と辞書 Words near each other ・ Thermal Belt Railway ・ Thermal blanket ・ Thermal blooming ・ Thermal break ・ Thermal bridge ・ Thermal burn ・ Thermal capillary wave ・ Thermal center ・ Thermal comfort ・ Thermal conductance ・ Thermal conductance quantum ・ Thermal conduction ・ Thermal conductivities of the elements (data page) ・ Thermal conductivity ・ Thermal conductivity detector ・ Thermal conductivity measurement ・ Thermal contact ・ Thermal contact conductance ・ Thermal cooking ・ Thermal copier ・ Thermal copper pillar bump ・ Thermal Credits ・ Thermal cutoff ・ Thermal cycler ・ Thermal de Broglie wavelength ・ Thermal death time ・ Thermal decomposition ・ Thermal degradation of polymers ・ Thermal depolymerization ・ Thermal design power 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 Thermal conductivity measurement ： ウィキペディア英語版 Thermal conductivity measurement There are a number of possible ways to measure thermal conductivity, each of them suitable for a limited range of materials, depending on the thermal properties and the medium temperature. Two classes of methods exist to measure the thermal conductivity of a sample: steady-state and non-steady-state (or transient) methods. ==Steady-state methods== In general, steady-state techniques perform a measurement when the temperature of the material measured does not change with time. This makes the signal analysis straightforward (steady state implies constant signals). The disadvantage is that a well-engineered experimental setup is usually needed. In geology and geophysics, the most common method for consolidated rock samples is the divided bar. There are various modifications to these devices depending on the temperatures and pressures needed as well as sample sizes. A sample of unknown conductivity is placed between two samples of known conductivity (usually brass plates). The setup is usually vertical with the hot brass plate at the top, the sample in between then the cold brass plate at the bottom. Heat is supplied at the top and made to move downwards to stop any convection within the sample. Measurements are taken after the sample has reached to the steady state (with zero heat gradient or constant heat over entire sample), this usually takes about 30 minutes and over. 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「Thermal conductivity measurement」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.