RT Journal Article
T1 Enhancing Fatigue Resistance of Polylactic Acid through natural reinforcement in material extrusion.
A1 Bermudo-Gamboa, Carolina
A1 Martín-Béjar, Sergio
A1 Bañón-García, Fermín
A1 Sevilla-Hurtado, Lorenzo
K1 Extrusión
K1 Materiales - Fatiga
K1 Plásticos biodegradables
AB This research paper aims to enhance the fatigue resistance of polylactic acid (PLA) in Material Extrusion (ME) by incorporating natural reinforcement, focusing on rotational bending fatigue. The study investigates the fatigue behavior of PLA in ME, using various natural fibers such as cellulose, coffee, and flax as potential reinforcements. It explores the optimization of printing parameters to address challenges like warping and shrinkage, which can affect dimensional accuracy and fatigue performance, particularly under the rotational bending conditions analyzed. Cellulose emerges as the most promising natural fiber reinforcement for PLA in ME, exhibiting superior resistance to warping and shrinkage. It also demonstrates minimal geometrical deviations, enabling the production of components with tighter dimensional tolerances. Additionally, the study highlights the significant influence of natural fiber reinforcement on the dimensional deviations and rotational fatigue behavior of printed components. The fatigue resistance of PLA was significantly improved with natural fiber reinforcements. Specifically, PLA reinforced with cellulose showed an increase in fatigue life, achieving up to 13.7 MPa stress at 70,000 cycles compared to unreinforced PLA. PLA with coffee and flax fibers also demonstrated enhanced performance, with stress values reaching 13.6 MPa and 13.5 MPa, respectively, at similar cycle counts. These results suggest that natural fiber reinforcements can effectively improve the fatigue resistance and dimensional stability of PLA components produced by ME. This paper contributes to the advancement of additive manufacturing by introducing natural fiber reinforcement as a sustainable solution to enhance PLA performance under rotational bending fatigue conditions. It offers insights into the comparative effectiveness of natural fibers and synthetic counterparts, particularly emphasizing the superior performance of cellulose
PB MDPI
YR 2024
FD 2024
LK https://hdl.handle.net/10630/40148
UL https://hdl.handle.net/10630/40148
LA eng
NO Bermudo Gamboa, C.; Martín-Béjar, S.; Bañón García, F.; Sevilla Hurtado, L. Enhancing Fatigue Resistance of Polylactic Acid through Natural Reinforcement in Material Extrusion. Polymers 2024, 16, 2422. https://doi.org/10.3390/polym16172422
DS RIUMA. Repositorio Institucional de la Universidad de Málaga
RD 19 ene 2026