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Analysis on Influencing Factors of Power and Measurement Model Modification of TPS

机译:TPS电力影响因素的影响因素分析

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In the process of measuring thermal conductivity coefficient of materials using transient plane source,heating film probe itself exists heat capacity and its resistance variation make that the probe heating power can't keep constant or be equal to exothermic power.This has a direct effect on the coefficient of thermal conductivity measurement accuracy.In order to effectively improve the measurement accuracy,the two major factors influencing the heating power is analyzed deeply and the theory measurement model is modified in the actual process of experiments on the basis of transient plane source (hot disk),and an improved measurement model is given.Three group measurement experiments on PMMA standard material were made under a data acquisition system.The experimental results show that,the modified model can effectively improve the thermal conductivity coefficient measurement accuracy,and has a very important significance of accurately and truthfully learning thermal conductivity of a material.
机译:在使用瞬态平面源测量材料的导热系数的过程中,加热膜探针本身存在热量,其电阻变化使得探头加热功率不能保持恒定或等于放热功率。这对此有直接影响热导率测量精度系数。为了有效提高测量精度,深入分析影响加热功率的两个主要因素,并在基于瞬态平面源的实际实验过程中修改理论测量模型(热磁盘)和改进的测量模型。在数据采集系统下进行了在PMMA标准材料上进行的三组测量实验。实验结果表明,修改模型可以有效地提高导热系数测量精度,并具有非常准确和真实地学习AM的热导率的重要意义病房。

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