Influence of Printing Patterns on the Properties of Fused Deposition Modeling (FDM) Products

Abstract

In this paper, plastic filament of polylactic acid (PLA) was made by extrusion and was used in fused deposition modeling (FDM) to produce standard samples. The influence of the packed density, raster angles, printing thickness, printing temperature, printing speed and surface morphology of the product were studied. Results show that the printed samples manufactured in the condition of 45° raster angle have better mechanical properties than the samples manufactured in the condition of 0° raster angle. And the samples with printing thickness of 0.2 mm have slightly better mechanical properties than the samples with printing thickness of 0.1 mm. The bending and impact strength of the sample increase with the increase in packed density. When the printing speed is 30 mm/s, not only the printing strength of the product is guaranteed, but also the printing time is shortened. The printing temperature has no effect on the printing time, but increasing the temperature will improve the flow performance of the printing wire. So it is clear that different printing patterns have different influence on the properties of fused deposition, and most of them have a optimal value to boost the properties.