Sample interview questions: How do you assess the thermal properties and heat transfer behavior of materials in your research?
Sample answer:
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Thermal conductivity: Measurement of a material’s ability to transfer heat through conduction. Common methods include the steady-state method, transient method, and laser flash method.
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Specific heat capacity: Measurement of the amount of heat required to raise the temperature of a unit mass of a material by 1 degree Celsius. Common methods include the method of mixtures, differential scanning calorimetry, and modulated temperature differential scanning calorimetry.
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Thermal diffusivity: Measurement of a material’s ability to transfer heat through conduction and thermal conductivity. Common methods include the transient method, laser flash method, and photothermal methods.
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Emissivity: Measurement of a material’s ability to emit thermal radiation. Common methods include the infrared emissivity measurement method, the calorimetric method, and the ellipsometric method.
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Thermal expansion: Measurement of a material’s change in volume or length due to temperature changes. Common methods include the dilatometer method, the interferometric method, and the strain gauge method.
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Heat transfer coefficient: Measurement of the rate of heat transfer between a surface and a fluid. Comm… Read full answer
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