The University of Tennessee Research Foundation

Ut-battelle, Inc.

Iowa State University Research Foundation Inc

Brett Gibson Compton

Mariappan Parans Paranthaman

Orlando Rios

Cajetan Ikenna Nlebedim

Samantha Maness

Oleg Shylo

Robert Pack

Hesam Shams

Michael James Goin

Madeline Wimmer

An ink formulation for additive manufacturing of low density syntactic foams is described. The ink formulation can include a thermoset resin, a curing agent suitable for use with the thermoset resin, a plurality of hollow spheres, such as glass microballoons, one or more solvents, and one or more non-hollow, viscosity modifying filler. Also described are a method of preparing the ink formulation, a method of preparing three-dimensional objects comprising low density syntactic foams, and the three-dimensional objects prepared thereby.

Low density syntactic foams via material extrusion additive manufacturing

A magnetic ink composition for three-dimensional (3D) printing a bonded magnet is provided. The magnetic ink composition includes magnetic particles, a polymer binder and a solvent. A 3D printing method for fabrication of a bonded magnet using the magnetic ink composition is also provided.

Extrudable magnetic ink and novel 3D printing method to fabricate bonded magnets of complex shape

A method of producing a cellular structure via an additive manufacturing technique includes the steps of: providing a feedstock material to an additive manufacturing printer device; dispensing the feedstock material from the printer device; and controlling the dispensing of the feedstock material to form at least one layer of the cellular structure according to a first predetermined gradient. In some aspects, the cellular structure comprises an array of cells surrounded, respectively, by walls, and arranged to create a non-uniform relative density and/or cell geometry across a width and/or a height of the cellular structure. An article of manufacture produced by such methods includes a cellular structure configured to produce a controlled collapse with selectable dynamic stiffness characteristics by altering the distribution and geometry of cells within the cellular structure, while being able to maintain a substantially similar static stiffness characteristic.

Methods of producing a cellular structure

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Knoxville, TN, United States of America

Brett Gibson Compton