Thermal diffusivity measurements using open photoacoustic cell technique

Authors

W. Mahmood Mat Yunus
C. Y. J. Fanny
I. V. Grozesu
S. A. Halim
M. M. Moksin

Abstract

The application of open photoacoustic cell (OPC) technique is demonstrated for measuring thermal diffusivity of solid samples. It is based upon the measurement of the photoacoustic signal in the modulation frequency region where the thermal diffusion length equals to the sample thickness. The measurements were carried out at room temperature for gold alloys (Au0 75Ag0.and Au. Ag. ); epoxidised natural rubbers 25 0 50 0 50 [ENR 25 (75%C ) and ENR 50 (75%C)]; and supercond ucti ng ceramics (Bi2Pb0 .6 Sr2Ca1.94Ba 0. Cu 0 , and Bi Pb . Sr Ca1. Zn. Cu 0 ) . The thermal 06 3 8 2 0 6 2 93 0 07 3 8 diffusivity values obtained in this measurement were in the range of 0.97 for Al down to 1.61 x 10-3 cm2/s for polymer sample.

Recommended Citation

Yunus, W. Mahmood Mat; Fanny, C. Y. J.; Grozesu, I. V.; Halim, S. A.; and Moksin, M. M. (2023) "Thermal diffusivity measurements using open photoacoustic cell technique," ASEAN Journal on Science and Technology for Development: Vol. 18: No. 1, Article 8.
DOI: https://doi.org/10.29037/ajstd.198
Available at: https://ajstd.ubd.edu.bn/journal/vol18/iss1/8