Experimental Study of Material Anisotropy Effect for 3D Printing Elements

The article presents the results of experimental studies of the effect of material anisotropy and the presence of tunnel inhomogeneity of 3D-printed elements relative to the direction of compression on the mechanical and strength characteristics of the obtained samples. Test samples made by 3D printing using PETG plastic were used for the research. Research was performed for solid samples and samples with a system of free and reinforced cavities. The results of experimental studies allow us to study the influence of the presence of geometric and structural heterogeneity of bodies on their mechanical and strength characteristics during their 3D printing. Thepeformed studies allow to optimally choose the modes of 3D printing of elements taking into account the anisotropy of the material in order to ensure their maximum strength characteristics. The results of experimental studies confirm the results of numerical calculations [1] obtained on the basis of the finite element method.