Authors: Mário S. Correia, Rui B. Ruben

Of the Additive Manufacturing categories, the process based on material extrusion - Fused Deposi- tion Modelling (FDM), which uses fused filament deposition of polymeric materials layer by layer - is the simplest and most accessible. In the construction of components, various processing parame-ters can be altered, two of which are the construction position and the percentage of internal infill of the components to be produced. In this work, an analysis of the mechanical behaviour in com-pression was carried out using tests on a universal mechanical test rig, with the samples having different percentages of filling with a linear infill pattern of 20, 40, 50, 75 and 100%. In addition to varying the internal infill, samples were produced horizontally and vertically using the same processing conditions. The mechanical behaviour to compression is improved for vertical cons-tructions, where the deposited layers are perpendicular to the direction of the deformation imposed in the compression test. This mechanical behaviour also shows better results as the percentage of infill increases.

Mário S. Correia, Rui B. Ruben