Repetitive laser pulse heating with a convective boundary condition at the surface
- 21 December 2000
- journal article
- Published by IOP Publishing in Journal of Physics D: Applied Physics
- Vol. 34 (2) , 222-231
- https://doi.org/10.1088/0022-3727/34/2/311
Abstract
Repetitive laser pulses deposit sufficient energy to provide uniform-like heating at the surface of a substrate. This improves the surface properties of the substrate so treated. In the present study, an analytical solution for the temperature distribution due to repetitive laser pulse heating with a convective boundary condition at the surface is obtained. A Laplace transformation method is used when obtaining the analytical solution for the heat transfer equation. The effects of the pulse parameter (β/γ) and the Biot number (Bi) on the resulting temperature profiles for the possible attainment of a steady temperature at the surface during repetitive laser pulse heating is explored. The consecutive pulses with decreasing intensities are employed in the analysis while Bi is varied as 2×10-4≤Bi≤0.2. It is found that it is unlikely that the temperature profile follows the pulse profile. The effect of Bi on the temperature profiles resulted from the repetitive pulses becoming significant when Bi≥10-2.Keywords
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