Thermal Diffusivity Measurements in Minimal Volume Photoacoustic Cell Using Simple Signal Normalization Techniques

2003 ◽  
Vol 31 (4) ◽  
pp. 399-409
Author(s):  
B. Bonno ◽  
J. L. Laporte ◽  
R. Tascón d'León
Keyword(s):  
Thermal Diffusivity ◽  
Photoacoustic Cell ◽  
Minimal Volume ◽  
Diffusivity Measurements ◽  
Signal Normalization

scholarly journals Improvement of the photoacoustic response in thermal diffusivity measurements

2020 ◽  
Vol 3 (4) ◽  
pp. 196-205
Author(s):  
David Gasca-Figueroa ◽  
Micael Gerardo Bravo-Sánchez ◽  
Adriana Guzmán-López ◽  
José Guadalupe Zavala-Villalpando ◽  
Francisco Javier García-Rodríguez
Keyword(s):  
Mathematical Model ◽  
Thermal Properties ◽  
Thermal Diffusivity ◽  
Room Temperature ◽  
Heat Energy ◽  
Photoacoustic Cell ◽  
Solid Materials ◽  
Diffusivity Measurements ◽  
Materials Used

An alternative photoacoustic cell configuration for the determination of the thermal diffusivity (α), at room temperature, for solid materials is presented. The method is based on the use of two identical photoacoustic chambers, inside both of them, a metallic foil thermally thin is used to transform the light energy to heat energy.  A Reference material placed parallel to a study material allows to relate the thermal properties of the materials used as support in the photoacoustic chambers of the experimental arrangement presented here. The ratio between experimental and theoretical photoacoustic amplitudes is realized to validate a proposed mathematical model.

scholarly journals Open photoacoustic cell for thermal diffusivity measurements of a fast hardening cement used in dental restoring

2012 ◽  
Vol 111 (1) ◽  
pp. 014701 ◽  
Author(s):  
F. B. G. Astrath ◽  
N. G. C. Astrath ◽  
M. L. Baesso ◽  
A. C. Bento ◽  
J. C. S. Moraes ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Photoacoustic Cell ◽  
Open Photoacoustic Cell ◽  
Diffusivity Measurements
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