| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Innovative Powder/Wire Processing of Multifunctional Materials
|
| Presentation Title |
Powder Flow Characterization with the Powder Spreading Testbed (PST) |
| Author(s) |
Aniruddha Das, Jesse Redford, Eric Whitenton |
| On-Site Speaker (Planned) |
Aniruddha Das |
| Abstract Scope |
Powder spreading is an integral part of various powder bed metal-based additive manufacturing technologies. The powder spreading testbed (PST) developed by the National Institute of Standards and Technology (NIST) enables a unique cross-sectional view of the powder spreading process. Particle image velocimetry has been carried out using a high-speed camera to gain a better understanding between powder flow, spreading conditions (recoating velocity, heap size, etc.), and feedstock characteristics (particle morphology, particle size distribution, etc.). Results will include a comparison of preliminary quantitative and qualitative assessments of the flow characteristics of gas and water atomized powders under the same spreading conditions. Furthermore, the influence of controllable process parameters such as heap size and recoating speed variations on powder flow will be discussed. Finally, a summary of future work directions for the PST will be presented. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Powder Materials, Characterization |