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http://dx.doi.org/10.3795/KSME-B.2002.26.12.1747

A Theoretical Study for the Thermal Diffusivity Measurement of Semi-Infinite Solid Using Photothermal Displacement Method  

Jeon, Pil-Soo (아주대학교 대학원 기계공학과)
Lee, Kwang-Jai (아주대학교 대학원 기계공학과)
Yoo, Jai-Suk (아주대학교 기계 및 산업공학부)
Park, Young-Moo (아주대학교 기계 및 산업공학부)
Lee, Jong-Hwa (아주대학교 기계 및 산업공학부)
Publication Information
Transactions of the Korean Society of Mechanical Engineers B / v.26, no.12, 2002 , pp. 1747-1755 More about this Journal
Abstract
A complete theoretical treatment of the photothermal displacement technique has been performed for thermal diffusivity measurement in semi-infinite solid materials. The influence of the parameters, such as radius and modulation frequency of the heating beam and the thermal diffusivity, was studied. Usually, thermal diffusivity was determined by the deformation angle and phase angle as the relative position between the heating and probe beams. In this study, we proposed the simple analysis method based on the real part of deformation gradient as the relative position between two beams. It is independent in the parameters such as power of heating beam, absorption coefficient, reflectivity, Poisson's ratio, and thermal expansion coefficient.
Keywords
Photothermal Displacement Method; Thermal Diffusivity; Phase; Deformation Gradient; Thermal Diffusion Length; Zero-Crossing Position;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
연도 인용수 순위
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