dc.contributor
Universitat Politècnica de Catalunya. Departament d'Enginyeria Mecànica
dc.contributor
Universitat Politècnica de Catalunya. Departament de Ciència dels Materials i Enginyeria Metal·lúrgica
dc.contributor
Universitat Politècnica de Catalunya. TECNOFAB - Grup de Recerca en Tecnologies de Fabricació
dc.contributor
Universitat Politècnica de Catalunya. PROCOMAME - Processos de Conformació de Materials Metàl·lics
dc.contributor.author
Gómez Gras, Giovanni
dc.contributor.author
Jerez Mesa, Ramón
dc.contributor.author
Travieso Rodríguez, José Antonio
dc.contributor.author
Llumà Fuentes, Jordi
dc.date.issued
2017-12-13
dc.identifier
Gomez, G., Jerez-Mesa, R., Travieso-Rodríguez, J.A., Lluma, J. Fatigue performance of fused filament fabrication PLA specimens. "Materials and Design", 13 Desembre 2017, vol. 140, p. 278-285.
dc.identifier
https://hdl.handle.net/2117/113144
dc.identifier
10.1016/j.matdes.2017.11.072
dc.description.abstract
This paper aims to analyze the fatigue response of PLA parts manufactured through fused filament fabrication (FFF). The influence of four factors (layer height, fill density, nozzle diameter and velocity) on the fatigue performance of cylindrical specimens is studied through an L27 Taguchi experimental design. This design is run for two different infills: linear and honeycomb. Specimens have been tested on a rotating fatigue bending machine. The optimal set of parameters and levels resulting in the highest number of cycles to failure have been determined, and implemented to manufacture a second set of specimens, which have been tested at different stress levels to represent the Wöhler curve. Fill density proves to be the most influential parameter on fatigue life, followed by layer height. The tests undertaken to represent the Wöhler curve revealed that 35.8 MPa can be considered as a lower threshold of the endurance limit for this kind of specimens. This value can be useful to use these devices to manufacture human implants, as PLA is a biocompatible material. The main novelty of this paper is that no previous fatigue life assessment of PLA parts manufactured through FFF has been developed.
dc.description.abstract
Peer Reviewed
dc.description.abstract
Postprint (author's final draft)
dc.format
application/pdf
dc.rights
http://creativecommons.org/licenses/by-nc-nd/3.0/es/
dc.rights
Attribution-NonCommercial-NoDerivs 3.0 Spain
dc.subject
Àrees temàtiques de la UPC::Enginyeria mecànica
dc.subject
Three-dimensional printing
dc.subject
additive manufacturing
dc.subject
fused filament fabrication
dc.subject
endurance limit
dc.title
Fatigue performance of fused filament fabrication PLA specimens
