Woodruff School of Mechanical Engineering

Mechanical Engineering Seminar

Title:

Metal Additive Manufacturing Via Magnetohydrodynamic Droplet Jetting

Speaker:

Prof. Denis Cormier

Affiliation:

Rochester Institute of Technology

When:

Thursday, October 11, 2018 at 11:00:00 AM

Where:

MRDC Building, Room 4211

Host:

Christopher Saldana
christopher.saldana@me.gatech.edu

Abstract

Magnetohydrodynamic (MHD) metal droplet jetting is a new metal additive manufacturing process in which molten metal flows into a pump chamber where Lorentz forces induced by pulsed electromagnetic fields result in rapid jetting of discrete droplets through a nozzle to produce 3D metallic structures. This talk will first provide an overview of the MHD metal droplet jetting process. It will then describe research involving successful deposition of high strength precipitation hardening aluminum alloys (e.g. 6061 and 7075 aluminum) that can be difficult to process with existing metal additive manufacturing processes due to microcracking. Microstructure and properties of the deposited materials will be presented. The talk will conclude with discussion of recent research involving the fabrication of engineered metallic lattice structures using the MHD process. Engineered lattice structures are of considerable interest for light weighting of aerospace components, vibration dampening, heat exchangers, and many other applications.


Biography

Denis Cormier is the Earl W. Brinkman Professor of Industrial and Systems Engineering at Rochester Institute of Technology where he also directs the New York State Additive Manufacturing and Multifunctional Printing Center. He has worked in the area of additive manufacturing and 3D printing for over 20 years. Much of his research has focused on metal additive manufacturing of aerospace alloys and engineering lattice structures. He was a founding member of ASTM's F-42 additive manufacturing standards group, and he is a long-time organizing committee member for SME's RAPID conference and exhibition. He serves on the editorial advisory boards for several journals including Additive Manufacturing, the Rapid Prototyping Journal.