Аnyakin M. Fundamentals of the development of technological means of efficiency of laser treatment increase.

This dissertation is dedicated to the development of scientific background of the increase of productivity and quality of laser processing technology (Rapid prototyping, welding, cutting, scribing etc.). By means of numerical modeling and experiment planning it was established that management of the distribution of energy density is the only way to raise the productivity and quality of laser processing. Moreover, the easiest way to solve this task is to employ additional scanning of laser beam. By affecting the scanning law, along with the optimization of processing regimes, it is possible to manage the dimensions and time of existence of the melt pool, kerf's surface roughness etc. What is more, management of laser processing regimes helps to avoid the influence of anisotropy of thermo-physical properties of the workpieces on the quality of the processing. Methodology and equipment that has been developed let us to determine temperature dependencies of optical properties of workpieces and monitor manufacturing process. In order to calculate optimal configuration of illuminators for technological lasers there was developed a numerical algorithm that lets to determine the distribution of light from flash-lamps towards the surface of active medium, coefficient of efficiency of the illumination system etc. Algorithms that convert plane images (maps, photos etc.) into pseudo-3D images that could be used later for their further reproducing in Rapid Prototyping systems are presented as well. Several examples of the designed equipment and technologies (rapid prototyping, cutting, drilling, welding etc.) where the developed methods and technological units were used are described in details.