Controlling toughness and strength of FDM 3D-printed PLA components through the raster layup

By Josef Kiendl, Chao Gao. 2020

179 citations recorded by the source corpus.

Abstract We investigate the influence of raster layup on the resulting material properties of FDM 3D-printed materials made of PLA. In particular, we investigate the resulting toughness, strength, and stiffness, with a special focus on toughness. We show that for standard layups with layer orientations alternating by 90°, stiffness and strength are almost isotropic, while a strong anisotropy is obtained for toughness. Moreover, we show that materials with such a layup can even switch their behavior from brittle to ductile depending on the loading direction. Finally, we propose a new layer stacking scheme which simultaneously provides increased toughness and increased strength compared to the standard approaches.

Subfields: Automotive Engineering, Biomedical Engineering

View Paper: https://www.semanticscholar.org/paper/28be42279496bb81dc58eba0046015b233a8bc28