| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing Modeling and Simulation: AM Materials, Processes, and Mechanics
|
| Presentation Title |
In-situ Monitoring of Powder Flow in Direct Energy Deposition Additive Manufacturing |
| Author(s) |
Baily Thomas, Abdalla Nassar, Steve Brown, Matthew Milanek, Jason Scherer |
| On-Site Speaker (Planned) |
Baily Thomas |
| Abstract Scope |
In the Direct Energy Deposition (DED) additive manufacturing (AM), one of the primary parameters varied is powder flow. Systematic and anomalous variations in powder flow rate influence deposition geometry and build quality. Here, we present an in-situ laser and camera based monitoring method to record and analyze powder flow on an Optomec LENS MR-7 DED system. Via calibration of the developed methods, we demonstrate the ability to measure overall mass flow rate and individual-nozzle mass flow rates from a multi-nozzle DED system. The developed methods allow for in-situ monitoring of flow rate and detection of powder flow anomalies. |