Modeling of surface tempering by a pulsed laser beam: Study of the material type’s influence

Boutalbi, Nadir; Bouaziz, Mohamed Najib; Ali Agha, Hamza

Journal of New Technology and Materials
Volume 4, Numéro 1, Pages 147-150
2014-06-30

Modeling Of Surface Tempering By A Pulsed Laser Beam: Study Of The Material Type’s Influence

Authors : Boutalbi Nadir . Bouaziz Mohamed Najib . Ali Agha Hamza .

Abstract

In recent years, laser technology has became one of the bases of modern technology thanks to its importance and its effectiveness to achieve what other classical energy sources are unable to do, especially in the process of surface tempering of materials. During the current industrial competitiveness, it is too hard to realize products that would stay intact, resistant to corrosion, and preserve by time their mechanical, electrical, optical or thermal properties. Laser surface tempering of materials can be introduced more quickly, in the sense of reaching high accuracy, requires a control of processes. The latter has not provided experimentally a proper solution, which encouraged researchers to develop several mathematical models. Moreover, mathematical modeling reduces the experimental cost and predicts the best parametric data and their influence on the optimization of the processing operation. In this work, we suggest a semi-analytic solution for the equation of heat conduction resulting from laser surface tempering of semi-infinite material, in 1D, with a convective boundary condition and receiving a pulsed laser beam on its lateral face. A Semi-analytical approach, based on GAVER-STEHFEST algorithm for the inversion of the solution in real domain is adopted. And the effect of the material’s types on the temperature is obtained and discussed.