How to test with the absolute LFA

The laser flash apparatus (LFA) method is used to measure the thermal diffusivity of solids. With known specific heat and density, thermal conductivity may be calculated. Using the interactive demonstration below, you can learn how to test with the LFA.

 
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Sample Material

absolute LFA
Coat the sample with graphite before testing.
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Your Sample - Raw Data

absolute LFA
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LFA Sensor

Laser

Optical Sensor

LFA Sensor Empty

Reference:
Paper: W. J. Parker, R. J. Jenkins, C. P. Butler and G. L. Abbott. Flash Method of Determining Thermal Diffusivity, Heat Capacity, and Thermal Conductivity. Journal of Applied Physics, 32: 1679, (1961).
Available at: http://scitation.aip.org/content/aip/journal/jap/32/9/10.1063/1.1728417

T. Baba and A. Ono. Improvement of the Laser Flash Method to Reduce Uncertainty in Thermal Diffusivity Measurements. Measurement Science and Technology, 12, (2001).
Available at: http://iopscience.iop.org/article/10.1088/0957-0233/12/12/304/meta

ASTM: ASTM E1461-13, Standard Test Method for Thermal Diffusivity by the Flash Method, ASTM International, West Conshohocken, PA, 2013, www.astm.org

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For more information visit Methods Requiring Calibration or Absolute Methods.

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