Void Content Reduction in 3D Printed Glass Fiber-Reinforced Polymer Composites through Temperature and Pressure Consolidation

To improve the properties of additively manufactured parts to be used in high-end applications, intrinsic defects occurring during printing process need minimized. Defects such as void can significantly degrade mechanical resulted parts. The presence is more evident composite printed due inhomogeneity specimen. In this study, rectangular coupons with a Markforged Mark Two printer were different fiber orientations and stacking sequences. A content reduction/consolidation process, consisting applying pressure at temperature levels, was developed implemented remove voids form air bubbles trapped two-part mold female male components same dimensions specimen designed machined hot press process. success approach evaluated by calculating density pre- post-consolidation. reduction results highly dependent on orientation; however, increased for all tested specimens, confirming porosity.