Razvoj inteligentnega sistema za modeliranje nanašanja materiala z uporabo laserja : doktorska disertacija

slovenian

doktorska dela

2013

Univerza v Mariboru, Fakulteta za strojništvo

Laser deposition of materials represents a modern additive technology, which has a number of advantages over remaining technologies for depositing metallicmaterials. Besides a small energy input, a quality bond and minimal heat affected zone, this technology is also characterized by good mechanical properties of the deposited material, which is a result of rapid cooling. Despite the prospects, this technology is still in the developing phase. New materials are being introduced and techniques for determining optimal process parameters. In the dissertation presented empirical modelling procedure can beused for predicting the properties of the deposited material. Genetic programming and regression analysis, where regression coefficients are determined with a genetic algorithm, were used for modelling. Based on experimental data, models for predicting the volume and roughness of depositedmaterial were made. Verification of the models was made with experimental data, which was not included in the modelling process. Optimal process parameters are chosen in terms of deposition speed, powder efficiency and surface roughness. The optimal process parameters were determined with non-dominated sorting. The results offer the operator of the machine a set of optimal process parameters, which enables the production of high quality products.

08.08.2023