Effect of Fill Patterns for 3D Printing on Percussion and Its Scattering

Abstract

The aim of this study is to investigate the effect of different Cura infill patterns on the impact strength using UNI EN ISO 180 unnotched specimens manufactured of PLA by using the FDM 3D printing technology. In Cura there are more than 10 different infill patterns, this is the reason why it is crucial both for the industrial users and the hobbyists to know how these infill patterns influence the mechanical properties of the 3D printed parts. Furthermore, it is important to determine, whether there is a so big difference among the mechanical properties provided by different infill patterns, which can significantly endanger the usability of the parts. In the study it plays a key role to assess which infill patterns are the most and the least favourable from the point of view of impact strength.