Fracture behavior of intact and defected 3D-printed parts
Mohammad Reza Khosravani, Tamara Reinicke
Abstract
Additive manufacturing (AM) is a highly innovative technology with advantages over conventional manufacturing processes. AM also known as three-dimensional (3D) printing is a set of manufacturing methods which can be used to produce functional end-use products from 3D solid models. Since 3D-printed components have been used as spare parts and final products, their structural performance become an important issue. The present work aims to determine influence of fabrication defect on structural performance and fracture behavior of 3D-printed parts. To this aim, polylactic acid material was used to print specimens based on fused deposition modeling process. These polymeric specimens were printed with two different raster directions. Moreover, the 3D-printed specimens were subjected to accelerated thermal ageing tests. In this study, a series of tensile tests was conducted on unaged and aged test coupons to determine influence of this thermal ageing on the mechanical behavior of the examined parts. This study sheds light on durability of additively manufactured parts.