This article describes an experimental and straightforward technique towards the simultaneous estimation of temperature-dependent thermal conductivity and specific heat of metals. The thermal model is based on transient nonlinear one-dimensional heat conduction across a metallic sample, which is subject to a constant heat flux on the upper side, and insulated on the bottom side. The thermal analyses are performed in plates of 304 stainless steel and WC10Co cemented carbide. The Levenberg–Marquardt method is employed to provide the solution to an inverse heat conduction problem capable of simultaneously evaluating the temperature-dependent thermophysical properties using transient temperature measurements. Through sensitivity analysis, it is possible to obtain prior information about estimation feasibility and establish all experimental aspects. The imperfect contact at the heater-plate interface causes contact resistance effect, which is considered a reducing agent on heat flux. Beck's nonlinear function minimization technique is used to confirm the reliability of the inverse estimation technique by using the achieved outcomes to recover the heat flux imposed on the test plate. Furthermore, the statistical study into confidence bounds and comparison with literature reveal the robustness of the results. Finally, the accuracy of the developed approach is investigated through the analysis of the errors deriving from experimental and numerical procedures.

本文介绍了一种用于同时估算与温度相关的导热率和金属比热的实验性和直接技术。热模型基于金属样品上的瞬态非线性一维热传导，该热传导在上侧受到恒定的热通量，在下侧受到绝缘。在304不锈钢和WC10Co硬质合金板中进行热分析。Levenberg-Marquardt方法用于提供逆热传导问题的解决方案，该问题能够使用瞬态温度测量同时评估与温度相关的热物理性质。通过敏感性分析，可以获得有关估计可行性的先验信息并建立所有实验方面。加热板界面的不完美接触会引起接触电阻效应，这被认为是热通量的还原剂。Beck的非线性函数最小化技术用于通过使用已获得的结果来恢复施加在测试板上的热通量，来确定逆估计技术的可靠性。此外，对置信范围的统计研究以及与文献的比较显示了结果的稳健性。最后，通过分析源自实验和数值程序的误差，研究了所开发方法的准确性。非线性函数最小化技术用于通过使用已获得的结果来恢复施加在测试板上的热通量来确认逆估计技术的可靠性。此外，对置信范围的统计研究以及与文献的比较显示了结果的稳健性。最后，通过分析源自实验和数值程序的误差，研究了所开发方法的准确性。非线性函数最小化技术用于通过使用已获得的结果来恢复施加在测试板上的热通量来确认逆估计技术的可靠性。此外，对置信范围的统计研究以及与文献的比较显示了结果的稳健性。最后，通过对实验和数值程序产生的误差进行分析，研究了所开发方法的准确性。