| 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 |
Development of a Geometrically Based Methodology for Local Process Control in Powder Bed Fusion |
| Author(s) |
Holger Merschroth, Julius van der Kuip, Jana Harbig, Michael Kniepkamp |
| On-Site Speaker (Planned) |
Holger Merschroth |
| Abstract Scope |
Laser powder bed fusion is a widely used additive manufacturing process, which is dependent on various influences. Layer-wise melting of powder generates successive heating and cooling, which affects the local microstructure of the manufactured part. Especially geometry-dependent heat distribution leads to inhomogeneous local solidification and microstructure. Therefore, control strategies are required which locally adapt the process parameter depending on the part geometry and building process. In this paper, a voxel-based control strategy for the laser power is designed. A voxel size of 100 μm considers the local heat distribution of each point’s vicinity and adjusts the parameter voxel-wise. In addition, a machine-independent methodology is developed to execute the voxel-based parameters in vectors for the laser powder bed fusion process. Furthermore, the limits of the laser power adaption are identified experimentally. The presented results demonstrate an improved part geometry, surface roughness, and homogenization of the material properties. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |