Effect of Solid Thickness on Transient Heat Conduction in Workpieces Irradiated by a Moving Heat Source

Abstract:

In this paper a three dimensional conductive field is analyzed and solved by means of the COMSOL Multiphysics code. The investigated work-pieces are made up of a simple brick-type solid. A laser source with combined donut-Gaussian distributions is considered moving with a constant velocity along motion direction. The solid dimension along the motion direction is assumed to be infinite or semi-infinite, while finite width (2ly) and thickness (s) are considered. Thermal properties are considered temperature dependent and the materials are considered isotropic. Surface heat losses toward the ambient are taken into account. Results are presented in terms of profile temperature to evaluate the effect of solid thickness.

• Periodical: Defect and Diffusion Forum (Volumes 297-301)
• Pages: 1445-1450
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.297-301.1445
• Online since: April 2010
• Authors: Nicola Bianco, Oronzio Manca, Sergio Nardini, Salvatore Tamburrino
• Keywords: Laser Source, Manufacturing, Moving Source, Transient Heat Conduction

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