Journal of Mechanical Science and Technology

  • 제17권12호
  • /
  • Pages.2078-2086
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  • 2003
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  • 1738-494X(pISSN)
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  • 1976-3824(eISSN)
대한기계학회 (The Korean Society of Mechanical Engineers)
권호 표지

Measurement of Thermal Diffusivity Using Deformation Gradient and Phase in the Photothermal Displacement Technique

  • Pilsoo Jeon (Department of Mechanical Engineering, Graduate School, Ajou University) ;
  • Lee, Kwangjai (Department of Mechanical Engineering, Graduate School, Ajou University) ;
  • Jaisuk Yoo (Division of Mechanical and Industrial Engineering, Ajou University) ;
  • Park, Youngmoo (Division of Mechanical and Industrial Engineering, Ajou University) ;
  • Lee, Jonghwa (Division of Mechanical and Industrial Engineering, Ajou University)
  • 발행 : 2003.12.01
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초록

As technology advances with development of new materials, it is important to measure the thermal diffusivity of material and to predict the heat transfer in the solid subject to thermal processes. The measurement of thermal properties can be done in a non-contact way using photothermal displacement spectroscopy. In this work, the thermal diffusivity was measured by analyzing the magnitude and phase of deformation gradient. We proposed a new data analysis method based on the real part of deformation gradient as the pump-probe offset value. As the result, compared with the literature value, the measured thermal diffusivities of materials showed about 3 % error.

키워드

참고문헌

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