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Thermal Diffusivity Measurements of Metals and Alloys by Making Use of the Phase Shift of Laser-Induced Thermoelastic Wave
Thermal diffusivity measurement Thermo elastic wave CO2 laser
2009/6/8
This paper describes a method of obtaining the thermal diffusivity of a metal sample of known thickness. By irradiating an intensity-modulated laser beam of 8 W to the sample at power density of 1.5 ×...
Photoacoustic determination of the thermal diffusivity for thin metallic samples
photoacoustic photothermal laser
2011/4/25
The ratio of the signals produced in the photoacoustic cell for the front and back illumination of the metallic sample is analyzed. Both the theory and the experiment conducted prove that the slope of...