| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
Laser Powder Bed Fusion Process Feedback Control based on In-Situ Powder Layer Thickness |
| Author(s) |
Jorge Neira, Ho Yeung |
| On-Site Speaker (Planned) |
Jorge Neira |
| Abstract Scope |
Metal laser powder bed fusion (LPBF) is a promising additive manufacturing technique for producing complex metal parts. However, the quality of the final product can be affected by various factors such as laser power, scanning speed, powder spreading quality, and layer thickness. In this study, we propose a real-time feedback control method based on the powder spreading quality and layer thickness. We employ a laser 3D scanner to measure the surface profile of each layer before and after the powder has been spread. A powder re-spreading will be triggered if an abnormality is detected on the spread powder surface. The difference between the profile is taken as the actual powder layer thickness and used to adjust the scan strategy for the next layer. The feedback control system is integrated into the customized-built LPBF testbed, and the effectiveness of the proposed feedback control system is demonstrated through a series of experiments. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |