Graduate student Matthew Mathesius will present his Master of Science in Mechanical Engineering thesis proposal titled “Rotating-Bending Fatigue Performance of Material Extruded Additively Manufactured Inconel 718.”

• Date: Friday, April 11
• Time: 3:30-5 p.m.
• Location: BARC-1142

Abstract:

Inconel 718 (IN718) is a nickel-based superalloy commonly used in aerospace and energy applications due to its high strength and fatigue resistance at high operating temperatures. However, IN718 is difficult to machine at complex geometries without inducing wear on manufacturing equipment. This has caused recent development in the usage of metal additive manufacturing methods for IN718, most notably Laser-Powder Bed Fusion (L-PBF). L-PBF processes, however, are extensively expensive and require skilled usage due to the safety precautions associated with working directly with metal powders. This study proposes an alternative methodology to L-PBF manufacturing through the Material Extrusion Additive Manufacturing (MEAM) process, where polymer-bound IN718 filament is extruded through a heated nozzle in a layer-by-layer deposition. The novelty of this study is that it assesses the viability of the MEAM process to serve as a more cost-effective approach to other additive and subtractive manufacturing methods for Inconel 718 used in fatigue applications.

Acknowledgments:

This study is supported under the National Science Foundation (NSF) Grant No. (2338178), awarded to Dr. Sanna F. Siddiqui.

Please join us!

For more information, contact Dr. Sanna Siddiqui.