| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Elucidating Size and Location Effects on Green Density of Binder Jet Additive Manufactured Parts |
| Author(s) |
Basil J. Paudel, Albert C To |
| On-Site Speaker (Planned) |
Basil J. Paudel |
| Abstract Scope |
Despite large distortions inherent in Binder Jet Additive Manufacturing (BJAM), the geometric accuracy after compensation using continuum-based phenomenological models has been improved to 2-3% of the part dimension. Such prediction models, however, require the bulk green density of the part as an input parameter. The green density has been reported to depend on printing parameters including location within the build and may not be readily known. In the present work, we investigate this three-dimensional spatial effect on the bulk green density. The study is repeated for four directionally scaled samples to elucidate the role of geometric size as well. Results indicate that larger parts achieve higher bulk green density despite being in similar location within the build. At least a 5% variation in density is also obtained within a given ‘component-layer’ which can be attributed to the powder spreading and compaction process. A green density prediction model is proposed. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |