Avaliação do efeito do nível e do tipo de preenchimento nas propriedades mecânicas de corpos de prova fabricados por impressão 3D utilizando o material ABS

Abstract

Additive manufacturing (AM) is gaining more and more prominence due to the possibility of manufacturing parts with complex geometries and reducing cost and production time, in addition to being a quick alternative for the creation of prototypes of parts before production. The Fused Deposition Modeling (FDM) is the most used AM technique, presenting a high growth potential. Where, the study of printing parameters in the FDM process has been gaining more and more attention in the academic community, due to the limitations of use caused by the low availability of materials that can be used in this technology. Therefore, the objective of this work is to analyze the effect of the filling level and the filling type on the mechanical properties of specimens manufactured by 3D printing using ABS material. Geometry selection, modeling and printing of the specimens were carried out. With this, the influence that the parameters, filling level and filling type exert on the tensile strength limit, elongation at break, printing time and printing mass was analyzed. To analyze the results, the Analysis of Variance (ANOVA) tool was used. Through the results obtained, it was possible to verify that the filling level has significant effects on the LRT, on the elongation at break, on the printing time and on the mass of the specimens, since, with the increase of the filling level of the specimens , the results of the response variables increased, however in the elongation at break this effect was only significant at the filling level from 75% to 100%. On the other hand, the type of filling parameter only had a significant influence on the elongation at break.