| 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 |
Validation of Simulation Based Predictions of Recoater Interference in Laser Powder Bed Fusion |
| Author(s) |
Michael Gouge, Chao Li, Jeff Irwin |
| On-Site Speaker (Planned) |
Chao Li |
| Abstract Scope |
Recoater interference is one of the most common and most expensive laser powder bed fusion (LPBF) failure modes. It is critical to investigate the mechanisms and the cause of recoater interference. Furthermore, accurate simulation-based predictions of recoater interference prior to manufacturing could help improve the printability, part quality, and economical feasibility. In this work, twenty-two overhang structures with various overhang angles, lengths, and build orientations were built to trigger recoater impacts. In situ imaging was used to identify the abnormality of powder surface. Nine of the parts penetrated the powder evidenced by recoater scraping, while three of parts caused recoater jams. The results show that the overhang angle and length were the most important indicators for recoater interference. Netfabb Local Simulation was used to create a digital twin of the experiment and was shown to accurately predict when parts were likely to cause recoater scraping and jams. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |