A new thermal property measurement technique by modified pattern search method

作者：Li, Peilin; Yang, Yang; Lu, Hao^*

来源：Measurement, 2012, 45(8): 2121-2127.

DOI：10.1016/j.measurement.2012.05.026

• Thermal conductivity
• Specific heat
• Measurement technique
• Pattern search method
• Finite element method

The high temperature thermal properties of materials are critical in industrial production and theoretic simulation. However, these properties are not always readily available. In this paper, a new technique was developed to obtain the temperature dependent thermal conductivity and specific heat through only one experiment. More importantly, this experiment was very convenient, since only thermal cycle recording was necessary. In addition, the finite element method and pattern search method were applied to optimize the supposed thermal property values. In order to avoid the convergence difficulty of the classical pattern search method, the step size adjusting function was rewritten. A solid sample and a particle like sample were selected to verify the measurement technique. The verification experiment showed that the thermal property results were accurate to some extent.

• 出版日期2012-10
• 单位上海交通大学