Additive manufacturing of continuous fibre reinforced thermoplastic composites using fused deposition modelling: Effect of process parameters on mechanical properties
By Jesús Miguel Chacón, M. Caminero, P. Núñez, E. García-Plaza, I. García-Moreno, J. M. Reverte. Composites Science And Technology, 2019
455 citations recorded by the source corpus.
Abstract Continuous Fibre Reinforced Thermoplastic Composites (CFRTPCs) are becoming alternative materials to replace the conventional thermosetting polymers and metals due to excellent mechanical performance, recycling and potential used in lightweight structures. Fused deposition modelling (FDM) is a promising additive manufacturing technology and an alternative of conventional processes for the fabrication of CFRTPCs due to its ability to build functional parts having complex geometries. The mechanical properties of a built part depend on several process parameters. The aim of this study is to characterize the effect of build orientation, layer thickness and fibre volume content on the mechanical performance of 3D printed continuous fibre reinforced composites components manufactured by a desktop 3D printer. Tensile and three-point bending tests are carried out to determine the mechanical response of the printed specimens. SEM images of fractured surfaces are evaluated to determine the effects of process parameters on failure modes. It is observed that the effect of layer thickness of nylon samples on the mechanical performance is marginally significant. In addition, continuous fibre reinforced samples show higher strength and stiffness values than unreinforced ones. The results show that carbon fibre reinforced composites exhibit the best mechanical performance with higher stiffness and flat samples exhibit higher values of strength and stiffness than on-edge samples. Additionally, the results show that strength and stiffness increase as fibre volume content increases in most cases but, conversely, the level of increment in mechanical performance is moderate with continued rise in fibre content, particularly in the case of Kevlar® and glass fibres, due to weak bonding between the fibre/nylon layers as well as the presence of increased levels of defects. Finally, the practicality of the results is assessed by testing an evaluation structure.
Subfields: Automotive Engineering, Building and Construction, Industrial and Manufacturing Engineering
View Paper: https://www.semanticscholar.org/paper/0e61fc5ded6602c66a4e98eba77e5d7bcf272c68
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Citations in the corpus
- Advanced robotics and additive manufacturing of composites: towards a new era in Industry 4.0 (2021, unknown): “As indicated by Chacón et al.([275]) AM of Kevlar/nylon and GF/nylon combinations was found to display weaker mechanical performance attributed to the occurrence of defects.”
- 3D-Printed Carbon Fiber Reinforced Polymer Composites: A Systematic Review (2020, background): “(3) Applying the current knowledge to functional parts [7].”
- Fused Deposition Modelling of Fibre Reinforced Polymer Composites: A Parametric Review (2021, methodology): “The manufacturing defects, being weak areas, reduce the full performance of continuous fibre [52].”