Methods for Fabricating Three-Dimensional Printed Composites

摘要

A 3D object according to the invention comprises substrate layers infiltrated by a hardened material. The 3D object is fabricated by a method comprising the following steps: Position powder on all or part of a substrate layer. Repeat this step for the remaining substrate layers. Stack the substrate layers. Transform the powder into a substance that flows and subsequently hardens into the hardened material. The hardened material solidifies in a spatial pattern that infiltrates positive regions in the substrate layers and does not infiltrate negative regions in the substrate layers. In a preferred embodiment, the substrate is carbon fiber and excess substrate is removed by abrasion.

主权项

1. A method of fabricating a three-dimensional object, comprising the steps of:
(a) positioning powder on at least part of at least one of a plurality of substrate layers, wherein each substrate layer is a sheet-like structure that is substantially planar or flat; (b) repeating step (a) for remaining layers in the plurality of substrate layers; and (c) stacking the plurality of substrate layers in a predetermined order for creating the three-dimensional object, wherein the layers are accurately aligned within the stack by an alignment mechanism.