Rapid Prototyping Journal: Volume 10 Issue 1

Electrophotographic printing of part and binder powders

Ashok V. Kumar, Anirban Dutta, James E. Fay

A solid freeform fabrication (SFF) technique is described where powder is deposited layer‐by‐layer using electrophotographic printing. In the electrophotography process, powder is…

Direct‐write deposition of fine powders through miniature hopper‐nozzles for multi‐material solid freeform fabrication

Pranav Kumar, James K. Santosa, Elizabeth Beck, Suman Das

In this paper, we present a concept for multi‐material solid freeform fabrication of heterogeneous components. This concept features hopper‐nozzles designed for depositing thin…

Comparisons between thermal modeling and experiments: effects of substrate preheating

K. Dai, X‐X. Li, L.L. Shaw

A three‐dimensional thermal finite element model including the effect of the powder‐to‐solid transition has been developed to investigate the transient temperature distribution…

Characterization of H13 steel produced via electron beam melting

Denis Cormier, Ola Harrysson, Harvey West

Electron beam melting (EBM) is a direct‐metal freeform fabrication technique in which a 4 kW electron beam is used to melt metal powder in a layer‐wise fashion. As this process is…

Precision extruding deposition and characterization of cellular poly‐ε‐caprolactone tissue scaffolds

F. Wang, L. Shor, A. Darling, S. Khalil, W. Sun, S. Güçeri, A. Lau

Successes in scaffold guided tissue engineering require scaffolds to have specific macroscopic geometries and internal architectures to provide the needed biological and…

Modeling and characterization of novel, low‐cost, direct‐write waveguide

M.A. Mignatti, M.I. Campbell, R. Ruizpalacios, K.L. Wood, J.J. Beaman

Both the current long term telecommunication trends toward optical networking and the recent growth in information bandwidth have pushed the necessity for improved optical…

Freeform fabrication of zinc‐air batteries and electromechanical assemblies

Evan Malone, Kian Rasa, Daniel Cohen, Todd Isaacson, Hilary Lashley, Hod Lipson

This paper reports on a fabrication platform and extensions to deposition‐based processes that permit freeform fabrication of three‐dimensional functional assemblies with embedded…