Novel laser flash technique to measure thermal effusivity of highly viscous liquids at high temperature

2001 ◽  
Vol 72 (3) ◽  
pp. 1899 ◽  
Author(s):  
Hiromichi Ohta ◽  
Hiroyuki Shibata ◽  
Atsushi Suzuki ◽  
Yoshio Waseda
Keyword(s):  
High Temperature ◽  
Thermal Effusivity ◽  
Laser Flash ◽  
Viscous Liquids ◽  
Laser Flash Technique ◽  
Flash Technique

scholarly journals Effect of radiative heat loss on thermal diffusivity evaluated using normalized logarithmic method in laser flash technique

2020 ◽  
Vol 39 (1) ◽  
pp. 390-394
Author(s):  
Tsuyoshi Nishi ◽  
Naoyoshi Azuma ◽  
Hiromichi Ohta
Keyword(s):  
High Temperature ◽  
Thermal Diffusivity ◽  
Heat Loss ◽  
Radiative Heat ◽  
Laser Flash ◽  
Solid Samples ◽  
Radiative Heat Loss ◽  
Logarithmic Method ◽  
Laser Flash Technique ◽  
Flash Technique

AbstractThe laser flash technique is a standard method to measure the thermal diffusivity of solid samples especially at high temperatures. To understand the reliability of thermal diffusivity evaluation at high temperature for solid samples with low-thermal-diffusivity values, we analyzed the effect of radiative heat loss using the logarithmic method. The results revealed that when the Biot number was 0.1, the deviation from the input thermal diffusivity value was approximately −1.6%. In addition, when an aluminum silicate (AS) sample was heated to 1,273 K, the maximum deviation was approximately −0.35%. In contrast, the difference between the input value and the thermal diffusivity evaluated by the halftime method when AS was heated to 1,273 K was approximately 2.38%. Thus, since the effect of radiative heat loss was found to be negligible, it is concluded that the normalized logarithmic method should be very useful for the thermal diffusivity analysis of low-thermal-diffusivity solid samples at high temperature.

scholarly journals Thermal diffusivity of polymers by the laser flash technique

2005 ◽  
Vol 24 (5) ◽  
pp. 628-634 ◽  
Author(s):  
Wilson Nunes dos Santos ◽  
Paul Mummery ◽  
Andrew Wallwork
Keyword(s):  
Thermal Diffusivity ◽  
Laser Flash ◽  
Laser Flash Technique ◽  
Flash Technique

Determination of thermal conductivity of silica dioxide Tarkosil T-50 nanopowder by laser flash technique

2016 ◽  
Vol 25 (2) ◽  
pp. 174-181 ◽  
Author(s):  
A. V. Nomoev ◽  
S. P. Bardakhanov ◽  
V. V. Syzrantsev ◽  
V. Ts. Lygdenov
Keyword(s):  
Thermal Conductivity ◽  
Laser Flash ◽  
Laser Flash Technique ◽  
Flash Technique ◽  
Silica Dioxide

Spatial distribution of thermal conductivity of diamond wafers as measured by laser flash technique

1998 ◽  
Author(s):  
Victor G. Ralchenko ◽  
A. Vlasov ◽  
Igor I. Vlasov ◽  
Boris V. Zubov ◽  
Alexander P. Nikitin ◽  
...  
Keyword(s):  
Thermal Conductivity ◽  
Spatial Distribution ◽  
Laser Flash ◽  
Laser Flash Technique ◽  
Flash Technique
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