Transactions of the Korean Society of Mechanical Engineers B (대한기계학회논문집B)

The Korean Society of Mechanical Engineers (대한기계학회)
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Measurement of Thermal Diffusivity Using Deformation Angle Based on the Photothermal Displacement Method

광열변위법의 변형각을 이용한 열확산계수 측정

  • Jeon, Pil-Su (Dept.of Mechanical Engineering, Graduate School of Ajou University) ;
  • Lee, Gwang-Jae (Dept.of Mechanical Engineering, Graduate School of Ajou University) ;
  • Yu, Jae-Seok (Dept.of Mechanical Industry Engineering, Ajou University) ;
  • Park, Yeong-Mu (Dept.of Mechanical Industry Engineering, Ajou University) ;
  • Lee, Jong-Hwa
  • 전필수 (아주대학교 대학원 기계공학과) ;
  • 이광재 (아주대학교 대학원 기계공학과) ;
  • 유재석 (아주대학교 기계 및 산업공학부) ;
  • 박영무 (아주대학교 기계 및 산업공학부) ;
  • 이종화
  • Published : 2002.02.01
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Abstract

A new method of measuring the thermal diffusivity of solid material at room temperature using photothermal displacement is proposed. The influence of the parameters, such as radius and modulation frequency of the pump beam and the sample thickness, was studied. In previous works, thermal diffusivity was determined by the deformation angle and phase angle as the relative position between the heating and probe beams. In this study, however, we proposed the new analysis method based on the real part of deformation angle as the relative position between two beams. From the zero-crossing position of real part of deformation angle with respect to the pump beam, the thermal diffusivity of the materials can be obtained. The experimental values for different samples obtained by applying the new method are in good agreement with the literature values.

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References

  1. Olmstead, M. A., Amer, N. M. and Kohn, S., 1983, 'Photothermal Displacement Spectroscopy:An Optical Probe for Solids and Surfaces,' Appl. Phys. A, Vol. 32, pp. 141-154 https://doi.org/10.1007/BF00616610
  2. Chem, Z. and Mandelis, A., 1992, 'Thermal Diffusivity Measurements of Ultrahigh Thermal Conductors with Use of Scanning Photothermal Rate-Window Spectrometry : Chemical-Vapor-Deposition Diamonds,' Phys. Rev., Vol. B46
  3. Fournier, D., Boccara, A. C., Skumanich, A. and Amer, N. M., 1986, 'Photothermal Investigation of Transport in Semiconductors: Theory and Experiment,' J. Appl. Phys. 59, p. 787 https://doi.org/10.1063/1.336599
  4. Salazar, A., Sanchez-Lavega, A. and Fernandez, J., 1991, 'Thermal Diffusivity Measurements in Solids by the Mirage Technique: Experimental Result,' J. Appl. Phys., Vol. 69, No. 3, pp. 1216-1223 https://doi.org/10.1063/1.347306
  5. Li, B., Zhen, Z. and He, S., 1986, 'Modulated Photothermal Deformation in Solids,' Appl. Phys. D, Vol. 24, pp. 2196-2209 https://doi.org/10.1088/0022-3727/24/12/010
  6. 이은호, 이광재, 전필수, 유재석, 김기현, 2001, '광열변위의 최소위상을 이용한 열확산계수 측정,' 대한기계학회논문집 B권, 제25권, 제3호, pp. 296-304
  7. Ozisik, M. N., 1983, Heat Conduction, 2nd ed., Wiley Interscience
  8. Nowacki, W., 1986, Thermoelasticity, 2nd ed., Pergamon Press
  9. Melnikov, Y. A., 1995, Green's Functions in Applied Mechanics, Computational Mechanics Publications
  10. Bayazitoglu, Y. and Ozisik, M., 1988, Elements of Heat Transfer, McGraw Hill, New York
  11. Shackelford J. F., 1994, CRC Material Science and Engineering Handbook, CRC Press