This paper describes a new method for measuring both the thermal conductivity and thermal diffusivity for solid materials, referred to as the new plane source (NPS) method. This method is quite similar to the Extended dynamic plane source (EDPS) method; however, the essential difference is the location of the temperature measurement. The NPS measures the temperature of the specimen at both the heat source and also at the heat sink using a thermocouple. The accuracy of the NPS method was verified by comparing the measurement results with the step-wise transient (SWT) method for two solid materials: silica glass and polymethylmethacrylate (PMMA). The difference in results between the NPS method and the SWT method was found to be 0.6%. The results of conductivity measurements by the NPS method of glass and PMMA were 1.019 and 0.1904 W·K⁻¹ m⁻¹, respectively. As for the measured thermal diffusivities, they were 0.504 and 0.1136 mm² s⁻¹, respectively. The standard uncertainties of the estimates were less than 0.9%.

本文介绍了一种用于测量固体材料的导热率和热扩散率的新方法，称为新平面源（NPS）方法。此方法与扩展动态平面源（EDPS）方法非常相似。但是，本质的区别在于温度测量的位置。NPS使用热电偶测量热源和散热器的样品温度。通过将两种固体材料（石英玻璃和聚甲基丙烯酸甲酯（PMMA））的测量结果与逐步瞬变（SWT）方法进行比较，验证了NPS方法的准确性。NPS方法和SWT方法之间的结果差异为0.6％。通过NPS法对玻璃和PMMA进行电导率测量的结果分别为1.019和0.1904 W·K^-1  m ^-1。至于测量的热扩散率，它们分别是0.504和0.1136mm ²  s ^-1。估计的标准不确定度小于0.9％。