Eventos Anais de eventos
COBEM 2017
24th ABCM International Congress of Mechanical Engineering
3D printed PLA and PLA reinforced with short carbon fibers: an experimental characterization
Submission Author:
Rafael Thiago Luiz Ferreira , SP
Co-Authors:
Rafael Thiago Luiz Ferreira, Igor Amatte, Thiago Dutra, Daniel Bürger
Presenter: Rafael Thiago Luiz Ferreira
doi://10.26678/ABCM.COBEM2017.COB17-0135
Abstract
In this paper, mechanical properties of the 3D printing materials PLA and PLA+CF are determined by experiments. The PLA (polylactic acid) is a base polymer and the PLA+CF is a composite formed by PLA reinforced with chopped carbon fibers in a weight fraction of 15%. The specimens tested are printed using the FDM (fused feposition modelling) process. Regarding that the plane of printing is the 1-2, the goal is to obtain for both PLA and PLA+CF the E1 and E2 tensile elastic moduli, the v12 and v21 Poisson ratios and the G12 shear elastic modulus, together with strength related properties (tensile S1*, S2* and shear S12*). The results obtained are used to evaluate the carbon fibers reinforcement in PLA. SEM (scanning electron microscopy) are also used to explain differences found in the PLA and PLA+CF properties. It is concluded that the short carbon fibers consistently raised the PLA+CF stiffness in the direction of printing, but are not able to improve its strengths.
Keywords
3D printing, Carbon fiber composites, experimental material properties
