Hedjazi, L.; Belhabib, S.; Stephant, N.; Durand, S.; Guessasma, S. Effects of Microstructural Arrangement on the Mechanical Behavior of 3D Printed Polyamide. Symmetry2023, 15, 2119.
Hedjazi, L.; Belhabib, S.; Stephant, N.; Durand, S.; Guessasma, S. Effects of Microstructural Arrangement on the Mechanical Behavior of 3D Printed Polyamide. Symmetry 2023, 15, 2119.
Hedjazi, L.; Belhabib, S.; Stephant, N.; Durand, S.; Guessasma, S. Effects of Microstructural Arrangement on the Mechanical Behavior of 3D Printed Polyamide. Symmetry2023, 15, 2119.
Hedjazi, L.; Belhabib, S.; Stephant, N.; Durand, S.; Guessasma, S. Effects of Microstructural Arrangement on the Mechanical Behavior of 3D Printed Polyamide. Symmetry 2023, 15, 2119.
Abstract
This study aims at relating the microstructural arrangement, in particular the symmetry materialised by filament sequencing in fused filament fabrication process on mechanical behaviour of printed polyamide. Dogbone structures are printed using various printing temperatures, which are combined with part orientation and raster angle that represent the in-plane and out-of-plane symmetrical arrangement of filament. Mechanical testing is conducted on both as-received filaments and printed structures to derive the effect of filament arrangement symmetry and process-generated defects on mechanical loss. In addition, microstructural analysis using scanning electron microscopy is used to share more light on the filament arrangement and their consequence on deformation mechanisms with respect to the printing conditions. The results show that 3D printed polyamide-based material exhibit remarkable tensile performance with strain stiffening behaviour and large elongation at break thanks to particular filament layout. Among the considered printing conditions, the part orientation is found to have the largest influence on tensile behaviour, which modulates the behaviour from complete restoration of the filament performance to mechanical loss.
Keywords
Fused filament fabrication; Polyamide; symmetrical filament arrangement; 3D printing; Scanning Electron Microscopy; tensile properties.
Subject
Engineering, Mechanical Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
