Thermal Diffusivity Measurement in Solids by means of the Photoacoustic Technique

2009 ◽  
Vol 1242 ◽  
Author(s):  
José B. Rojas-Trigos ◽  
A. Calderón ◽  
E. Marín
Keyword(s):  
Experimental Data ◽  
Gallium Arsenide ◽  
Thermal Diffusivity ◽  
Heat Source ◽  
Photoacoustic Technique ◽  
Heat Transmission ◽  
Thermal Diffusivity Measurement ◽  
Model Based ◽  
Diffusivity Measurement ◽  
Diffusivity Measurements

ABSTRACTWe report thermal diffusivity measurements for samples of silicon, gallium arsenide and cupper by means of the photoacoustic technique in a heat transmission configuration in order to obtain a comparison between the results obtained with the use of the conventional RG-model and our SP-model (based in a square periodical heat source) in the fitting process to the experimental data. Our results show that our SP-model is accurate to obtain a good fitting with the experimental data and it improves notably the results obtained with the RG-model.

scholarly journals Thermal Diffusivity Measurement for p-Si and Ag/p-Si by Photoacoustic Technique

2015 ◽  
Vol 45 (5) ◽  
pp. 518-524 ◽  
Author(s):  
Mohammed Jabbar Hussein ◽  
W. Mahmood Mat Yunus ◽  
Halimah Mohamed Kamari ◽  
Azmi Zakaria
Keyword(s):  
Thermal Diffusivity ◽  
Photoacoustic Technique ◽  
Thermal Diffusivity Measurement ◽  
Diffusivity Measurement

Thermal diffusivity measurement on LiMn2O4 and its de-lithiated form (λ-MnO2) using photoacoustic technique

2006 ◽  
Vol 131 (1-3) ◽  
pp. 210-215 ◽  
Author(s):  
K. Raveendranath ◽  
Jyostna Ravi ◽  
S. Jayalekshmi ◽  
T.M.A. Rasheed ◽  
K.P.R. Nair
Keyword(s):  
Thermal Diffusivity ◽  
Photoacoustic Technique ◽  
Thermal Diffusivity Measurement ◽  
Diffusivity Measurement

THERMAL DIFFUSIVITY OF Bi2Sr2CaCu2O8 CERAMICS WITH NANO Ag ADDITION MEASURED USING OPEN-CELL PHOTOACOUSTIC TECHNIQUE

2008 ◽  
Vol 22 (30) ◽  
pp. 3015-3023 ◽  
Author(s):  
M. A. B. NARRETO ◽  
K. WEI ◽  
R. ABD-SHUKOR ◽  
H. A. ALWI
Keyword(s):  
Thermal Diffusivity ◽  
Electrical Resistance ◽  
Photoacoustic Technique ◽  
Thermal Diffusivity Measurement ◽  
Metallic Behavior ◽  
Open Cell ◽  
Ag Addition ◽  
Diffusivity Measurement ◽  
Thick Region ◽  
Thermal Diffusivities

This paper reports the results of thermal diffusivity measurement on nano Ag added Bi 2 Sr 2 CaCu 2 O 8- Ag x (with x = 0–1.0) ceramics using an open-cell photoacoustic instrument. The thermal diffusivities were obtained by analyzing the phase of the photo-acoustic signal of thermally thick samples using Calderon's method as well as the analysis of the phase in thermally thick region. We found that the thermal diffusivity increases with the amounts of nano Ag . The values of thermal diffusivity obtained were between 0.01250 ± 0.00128 to 0.01606 ± 0.00230 cm 2/ s for Ag 0 to Ag 1.0. The electrical resistance versus temperature measurements showed a metal-like behavior for all samples. However, a metal-like transition was observed between x = 0.5 and 0.7 when results of thermal diffusivity and electrical resistance measurements were analyzed together with samples x ≥ 0.7 showing the metallic behavior.

Thermal Diffusivity Measurement of a NiTi Shape Memory Alloy Using a Periodic Temperature Field

2021 ◽  
Vol 42 (10) ◽  
Author(s):  
José Ricardo Ferreira-Oliveira ◽  
Paulo César Sales da Silva ◽  
Luiz Roberto Rocha de Lucena ◽  
Rômulo Pierre Batista dos Reis ◽  
Carlos José de Araújo ◽  
...  
Keyword(s):  
Temperature Field ◽  
Thermal Diffusivity ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Niti Shape Memory Alloy ◽  
Thermal Diffusivity Measurement ◽  
Diffusivity Measurement ◽  
Periodic Temperature

ChemInform Abstract: Thermal Diffusivity Measurement of Uranium-Thorium-Zirconium Hydride.

ChemInform ◽  
2001 ◽  
Vol 32 (15) ◽  
pp. no-no
Author(s):  
B. Tsuchiya ◽  
J. Huang ◽  
K. Konashi ◽  
W. Saiki ◽  
T. Onoue ◽  
...  
Keyword(s):  
Thermal Diffusivity ◽  
Zirconium Hydride ◽  
Thermal Diffusivity Measurement ◽  
Diffusivity Measurement
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