HPL-TE Method for Determination of Coatings Relative Total Emissivity Sensitivity Analysis of the Influences of Method Parameters

High power laser – total emissivity method (HPL-TE method) for determination of coatings relative total emissivity dependent on the temperature is introduced. Method principle, experimental and evaluation parts of the method are described. Computer model of HPL-TE method is employed to perform the sensitivity analysis of the effect of method parameters on the sample surface temperature in the positions where the surface temperature and radiation heat flux are measured.

• Z. Veselý
• M. Honner

• High temperature laser testing
• measurement ofthermal properties
• emissivity
• coatings.

[1] M.F. Modest, Radiative Heat Transfer. San Diego, CA: Elsevier, 2003,
860 p.
[2] J.F. Sacadura, "Measurement Techniques for Thermal Radiation
Properties", in Proc. 9th International Heat Transfer Conference, 1990,
pp. 207-222.
[3] D.P. DeWitt, G.D. Nutter, Theory and Practice of Radiation
Thermometry. New York: John Wiley, 1988, 1152 p.
[4] B. Zhang, J. Redgrove, J. Clark, "A Transient Method for Total
Emissivity Determination", International Journal of Thermophysics, vol.
25, no. 2, pp. 423-438, March 2004.