ASTM D4612-2008 岩石热扩散系数计算规程 下载

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中文名称: 岩石热扩散系数计算规程

英文名称:Standard Practice for Calculating Thermal Diffusivity of Rocks

            
            
                          

中标分类：P13	ICS分类：93.020
标准分类编号：AS	页数：4

            
            
                          

发布日期：	实施日期：2008-07-01	作废日期：
被替代标准：		代替标准：ASTM D4612-2003
引用标准：ASTM C177;ASTM C518;ASTM C642;ASTM D3740;ASTM D4611;ASTM D6026		采用标准：
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范围：1.1 This practice involves calculation of the thermal diffusivity from measured values of the mass density, thermal conductivity,  and specific heat at constant pressure. It is applicable for any materials  where these data can be determined. The temperature range covered by this  practice is 20 to 300°C.   Note 1—The diffusivity, as determined by this practice, is intended to be a volume average value, with the averaging volume being ≥ 2 × 10 −5 m3  (20 cm3). This requirement  necessitates the use of specimens with volumes greater than the minimum averaging  volume and precludes use of flash methods of measuring thermal diffusivity,  such as the laser pulse technique.   Note 2—This practice is closely linked to the overall test procedure used in obtaining the primary data on density, specific heat, and conductivity. It  cannot be used as a “stand alone” practice because the thermal  diffusivity values calculated by this practice ar 下载：

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