RT Journal Article
T1 Influence of printing parameters and short carbon fibre reinforcement on fatigue behaviour, dimensional accuracy and macrogeometrical deviations of polylactic acid in material extrusion
A1 Bermudo-Gamboa, Carolina
A1 Martín-Béjar, Sergio
A1 Trujillo-Vilches, Francisco Javier
A1 Sevilla-Hurtado, Lorenzo
K1 Extrusión (Mecánica)
K1 Fibras de carbono
K1 Materiales - Fatiga
K1 Procesos de fabricación
AB This paper evaluates the potential of short carbon fibres as a reinforcement material in order to improve the fatigue resistance of PLA. The fatigue behaviour has been analysed through rotational bending fatigue tests. The influence of printing parameters, such as layer thickness, printing temperature and printing speed, on the mechanical behaviour, dimensional accuracy and macrogeometrical deviations of printed parts have also been analysed as they can too interfere with the mechanical behaviour of the parts. The results show that there is no improvement on the mechanical behaviour of the printed parts with the incorporation of short carbon fibres. On the contrary, the fatigue behaviour worsens due to the poor adhesion between the short carbon fibres and the PLA matrix. Fatigue life is reduced by 6% compared to PLA. Focusing only on the printing parameters, it is shown that at the highest temperature allowed, the fatigue behaviour improves a 12%. The Printing speed is the least influential variable, with the layer thickness having the greatest influence, increasing fatigue life by 15% comparing 0.1 mm and 0.3 mm. Therefore, the best combination would be to print with the highest temperature and the highest layer thickness, for this case study. Finally, a parametric relationship is presented in order to relate the layer thickness with the fatigue behaviour.Fundi
PB Elsevier
YR 2023
FD 2023-09
LK https://hdl.handle.net/10630/27447
UL https://hdl.handle.net/10630/27447
LA eng
NO Bermudo-Gamboa, C., Martín-Béjar, S., Trujillo-Vilches, F. J., & Sevilla-Hurtado, L. (2023). Influence of printing parameters and short carbon fibre reinforcement on fatigue behaviour, dimensional accuracy and macrogeometrical deviations of polylactic acid in material extrusion. Composites Science and Technology, 242, 110205.
NO Funding for open access charge: Universidad de Málaga / CBUA
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 20 ene 2026