Journal of Thermal Analysis and Calorimetry

, Volume 78, Issue 1, pp 185–189 | Cite as

Thermal conductivity measurements using the flash method

  • P. S. Gaal
  • M.-A. Thermitus
  • Daniela E. Stroe


Thermal diffusivity is the speed with which heat propagates through a material. It has a multitude of direct applications, such as determining heat transfer through brake pads at the moment of contact, etc., but more often it is used to derive thermal conductivity from the fundamental relationship tying it with specific heat capacity and density. Using a new multi-sample configuration system, and testing a reference sample adjacent to the unknown, specific heat capacity can be obtained parallel with thermal diffusivity. Thus, a single test yields thermal diffusivity and thermal conductivity with prior knowledge of density. The method is fast and produces results with high accuracy and very good repeatability. The sample size, 12 to 30 mm diameter and 2 to 5 mm thickness, is easy to handle and is well suited for a broad range of materials, even for composites, often a problem for other methods. Typical data on two polymers, Pyrex glass and Pyroceram 9606 are presented.

thermal conductivity thermal diffusivity specific heat capacity flash technique Pyrex Pyroceram 


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Copyright information

© Kluwer Academic Publisher/Akadémiai Kiadó 2004

Authors and Affiliations

  • P. S. Gaal
    • 1
  • M.-A. Thermitus
    • 1
  • Daniela E. Stroe
    • 1
  1. 1.Anter CorporationPittsburghUSA

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