The ability of a material to store and transfer heat is characterized with the material properties of thermal diffusivity, thermal conductivity, and specific heat capacity. Understanding these properties is critical when exposing a material to a wide array of temperature environments: large gradients, rapid changes, and maintaining stability, to name a few. Accurate values of these properties are essential for modeling and managing heat, whether the component of interest is called on to insulate, conduct, or simply withstand temperature changes. Heat transfer property measurements also reflect important information about material composition, purity and structure, as well as secondary performance characteristics such as tolerance to thermal shock. This presentation will examine both steady state and light flash methods/instruments for thermal diffusivity and thermal conductivity measurements covering the temperature range from -175°C to 2800°C. Measurements of a wide variety of materials including polymers, ceramics, graphite, composites, metals and alloys, highly conductive graphite film, etc. will be discussed.
About the Speaker
Heng Wang, Ph.D. is currently a Senior Product Marketing Specialist for thermal conductivity products at TA Instruments. He earned his M.S. and Ph.D. in Material Physics from Chinese Academy of Sciences where he was a recipient twice of the Excellence Prize of the President Award. He was also a recipient of the STA Fellowship Award by Japan International Science & Technology Exchange Center. He developed and improved thermophysical properties measurement methods and apparatus including laser flash thermal diffusivity and dilatometry during his research careers at Chinese Academy of Sciences, and National Metrology Institute of Japan. He has a combined experience of R&D, application, product management, marketing, and sale of 30 years in material characterization field.