JOURNAL BROWSE
Search
Advanced SearchSearch Tips
Measurement of Thermal Diffusivity Using Minimum Phase Based on the Photothermal Displacement
facebook(new window)  Pirnt(new window) E-mail(new window) Excel Download
 Title & Authors
Measurement of Thermal Diffusivity Using Minimum Phase Based on the Photothermal Displacement
Lee, Eun-Ho; Lee, Gwang-Jae; Jeon, Pil-Su; Yu, Jae-Seok; Kim, Gi-Hyeon;
  PDF(new window)
 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. From the minimum position of phase of measured deflection with respect to the pump beam, the thermal diffusivity of the materials can be obtained. The position where phase has the minimum value is determined using multiparameter least-square regression fitting. The experimental values for different samples obtained by applying the new method are in good agreement with the literature values.
 Keywords
Photothermal Displacement Method;Thermal Diffusivity;Phase Angle;Deformation Gradient;Thermal Diffusion Length;
 Language
Korean
 Cited by
1.
광열변위법의 변형각을 이용한 열확산계수 측정,전필수;이광재;유재석;박영무;이종화;

대한기계학회논문집B, 2002. vol.26. 2, pp.302-309 crossref(new window)
 References
1.
Olmstead, M. A., Amer, N. M. and Kohn, S., 1983, 'Photothermal Displacement Spectroscopy : An Optical Probe for Solids and Surface,' Appl. Phys. A, Vol. 32, kpp. 141-154 crossref(new window)

2.
Li, B., Zhen, Z. and He, S., 1986, 'Modulated Photothermal Deformation in solids,' Appl. Phys. D, Vol. 24, pp. 2196-2209 crossref(new window)

3.
Balageas, D. L., Boscher, D. M., Deon, A. A. and Enguehard, F., 1991, 'Photoacoustic Microscopy by Photodeformation Applied to Thermal Diffusivity Determination,' ETPC Proceedings, Vol. 23, pp. 517-528

4.
이은호, 이광재, 유재석, 1999, '광열효과를 이용한 Fe, Cu 그리고 Ni의 열확산계수 결정,' 대한기계학회 열공학부문 추계학술대회 논문집, pp. 121-128

5.
Ozisik, M. N., 1983, Heat Conduction, 2nd ed., Wiley Interscience

6.
Nowacki, W., 1986, Thermoelasticity, 2nd ed, Pergamon Press

7.
Melnikov, Y. A., 1995, Green's Functions in Applied Mechanics, Computational Mechanics Publications

8.
Bayazitoglu, Y. and Ozisik, M., 1988, Element of Heat Transfer, McGraw Hill, New York

9.
Shackelford, J. F., 1994, CRC Material Science and Engineering Handbook, CRC Press