Laser-testurizazio prozesurako eredu matematikoa

Abstract

The aim of this project is the development of a mathematical model, which represents the laser texturing process. To that end, firstly, information on the fundamentals of the laser texturing process is gathered. After the analysis of the state-of-the-art of laser texturing processes, the development of a mathematical model representing the phenomena that takes place in the laser texturing process is carried out. Therefore, the methodology followed for such task consists on 3 steps: creating an approximate model, performing experimental testing of the process, and conducting the validation of the model based on the experimental results obtained. The development of the model is based on the PDE module of Matlab and aims to simulate the vaporization phenomenon in localized areas of the surface. The craters created by the model are later reproduced in experimental tests, by employing a laser, which emits nanosecond pulses. For the purpose of validating the laser texturing model, the results obtained in the simulations and the experimental data are compared and a good correlation is obtained: errors below 5 and 0.5 microns regarding the diameter and the depth of the crater, respectively. Consequently, the mathematical model and the followed procedure are validated.