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1. (WO2018140382) METHOD AND APPARATUS FOR VOLUMETRIC MANUFACTURE OF COMPOSITE OBJECTS

Pub. No.:    WO/2018/140382    International Application No.:    PCT/US2018/014801
Publication Date: Fri Aug 03 01:59:59 CEST 2018 International Filing Date: Wed Jan 24 00:59:59 CET 2018
IPC: B29C 64/295
B29C 64/141
B33Y 30/00
B33Y 10/00
Applicants: THE GOVERNMENT OF THE UNITED STATES OF AMERICA, AS REPRESNTED BY THE SECRETARY OF THE NAVY
Inventors: BIRNBAUM, Andrew, J.
ILIOPOULOS, Athanasios
STEUBEN, John
MICHOPOULOS, John, G.
Title: METHOD AND APPARATUS FOR VOLUMETRIC MANUFACTURE OF COMPOSITE OBJECTS
Abstract:
A method and apparatus for volumetric manufacture of three-dimensional physical objects from a precursor material based on plans, specifications, or virtual models. A build domain is provided comprising an enclosed three-dimensional wire grid in which the wires are connected to one or more electric power sources configured to controllably and addressably apply power to one or more individual wires to cause the wires to dissipate heat produced by Joule heating to the surrounding precursor material situated within the build domain, and to further allow for the control of the three-dimensional heat distribution and accordingly temperature distribution within the build domain. By activating and deactivating one or more predetermined subsets of the wires in the build domain, the precursor can be caused to melt and/or solidify so as to form a three-dimensional object within the build domain.