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

The Korean Society of Mechanical Engineers (대한기계학회)
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A Theoretical Study of Photothermal Pulsed Radiometry Method for the Thermal Diffusivity Measurement

재료의 열확산계수 결정을 위한 광열복사법의 이론적 연구

  • 육형규 (아주대학교 대학원 기계공학부) ;
  • 유재석 (아주대학교 기계공학부) ;
  • 김현정 (아주대학교 기계공학부) ;
  • 이광재 (아주대학교 대학원 기계공학부)
  • Published : 2005.01.01
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Abstract

We analyze in detail axially symmetric theoretical study for the photothermal pulsed radiometry of a cylindrical model. The theoretical solutions describe the transient infrared radiation from the sample heated by short-duration pulsed heating. In the conventional transmission radiometry technique, the excitation source and the detector are on opposite sides of the sample, otherwise in the new single ended radiometry technique, the excitation source and the detector are on same sides of the sample. The analytical solution described for photothermal radiometry in this study would not need to cut or polish samples to measure the thermal diffusivity. Therefore the radial area and axial thickness of samples are not limited. The effects of excitation pulse duration and the area of heat source are discussed.

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References

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