About this Abstract |
| Meeting |
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
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| Symposium
|
2025 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2025)
|
| Presentation Title |
Correlation of Process Parameters and Layer Characteristics in High-Speed Directed Energy Deposition Using Optical Coherence Tomography |
| Author(s) |
Helena Gabriele Wexel, Christoph Krull, Patrick Gajek, Simone Maffia, Tobias Stittgen, Stephan Koß, Johannes Henrich Schleifenbaum, Frederik Zanger |
| On-Site Speaker (Planned) |
Patrick Gajek |
| Abstract Scope |
High-speed directed energy deposition with laser beam (HS DED-LB) represents a key enabler for circular and resource-efficient production due to deposition velocities up to 200 m/min and layer thicknesses down to 50 µm. To ensure process stability and product quality, precise in-situ monitoring techniques are required. This study investigates the application of Optical Coherence Tomography (OCT) as a high-resolution, non-contact method for real-time layer height measurement in HS DED-LB. By employing a Design of Experiments (DoE) in combination with response surface methodology (RSM), correlation models are derived that link key process parameters—laser power, processing speed, and powder mass flow rate—to layer height and relative density. The findings highlight the potential of OCT-based monitoring for early deviation detection in high-speed additive processes and to support the development of model-driven control approaches. This demonstrates its relevance for the optimization of resource-efficient additive manufacturing systems in circular production environments. |
| Proceedings Inclusion? |
Planned: Post-meeting proceedings |