Breaking material symmetry to control mechanical performance in 3D printed objects
Résumé
This study aims at quantifying the effect of material arrangement in 3D printed ceramic on the mechanical performance. Starting from two main printing parameters, namely part orientation and printing angle, twelve different printing configurations are considered. These configurations differ in terms of filament arrangement in the building direction and within the plane of construction. Tensile testing is performed using vertical, lateral and longitudinal orientations for a printing angle of 0°, 15°, 30°, and 45°. Scanning Electron Microscopy is considered to study how the material symmetry affects the fractured patterns. In addition, optical imaging is used to monitor the deformation sequences up to the rupture point. The experimental results show a wide variety of deformation mechanisms that are triggered by the studied printing configurations. The interpretation of the observed trends in terms of mechanical load transfer is related to the lack of material connectivity and the relative orientation of the filaments with respect to the loading directions. This study concludes on the possibility to tune the tensile performance of 3D printed ceramic material by adjusting both the part orientation and the printing angle.
Origine : Fichiers produits par l'(les) auteur(s)
Licence : CC BY - Paternité
Licence : CC BY - Paternité