20.500.12556/RUL-155463 Genetic algorithm-based framework for optimization of laser beam path in additive manufacturing In this study, a genetic algorithm-based laser beam (LB) path optimization method is presented to improve laser-based additive manufacturing (LBAM). To emulate the LBAM process, LB irradiation of a thin metal substrate is applied. The LB path generation is formulated as the search for the optimal sequence of LB irradiation into the cells on the substrate that minimizes the fitness function, which is composed of two components, i.e., thermal fitness and process fitness. The thermal fitness is expressed by the average thermal gradient, and a simple thermal model is developed to simulate the effects of laser-induced heat input on the temperature distribution in the substrate. The process fitness regulates the suitability of the proposed LB path for the implementation of the LBAM process. In addition to standardized tool paths (i.e., raster, spiral, etc.), novel LB path generators are proposed to define the initial population of LB path solutions. To implement a genetic algorithm-based LB path optimization, a framework is proposed, and custom initialization, crossover, and mutation operators are developed for application in LBAM. The effectiveness of the proposed approach is demonstrated through a simulation case study aiming to identify LB paths that minimize the fitness function and thus provide more suitable LB path solutions with respect to the defined fitness function. Compared with the traditional trial-and-error LB path formulations, the proposed approach provides an improved and automated method for an efficient laser beam path selection in LBAM. additive manufacturing laser beam path genetic algorithm optimization aditivna proizvodnja pot laserskega žarka genetski algoritem optimizacija true false true Angleški jezik Slovenski jezik Članek v reviji 2024-04-03 13:09:11 2024-04-03 13:09:17 2024-04-04 03:52:39 0000-00-00 00:00:00 2024 0 0 17 str. iss. 4, art. 410 Vol. 14 2024 0000-00-00 Zaloznikova Objavljeno NiDoloceno 0000-00-00 0000-00-00 0000-00-00 621.9.048:510.53 2075-4701 10.3390/met14040410 191234563 Potocnik,_Jeromen,_Govekar-Genetic_algorithm-based_framework_for_optimization_of_laser_beam_path_in_additive_manufacturing.pdf Potocnik,_Jeromen,_Govekar-Genetic_algorithm-based_framework_for_optimization_of_laser_beam_path_in_additive_manufacturing.pdf 1 86E5AFCFE9A1A6FD3DD21A28758882AB 819126a737695cfaa59a14e0531fb572b84196eaa2baa0d7930da0e4a3fe00f4 ed57b975-f1aa-11ee-853b-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182364 https://www.mdpi.com/2075-4701/14/4/410 1 9ccd4926-f1aa-11ee-853b-0050569b8976 https://repozitorij.uni-lj.si/Dokument.php?lang=slv&id=182363 Fakulteta za strojništvo 0 0 0