About this Abstract |
| Meeting |
TMS Specialty Congress 2026
|
| Symposium
|
World Congress on Reproducibility, Qualification, and Standards Development of Additive Manufacturing and Beyond (RQSD 2026)
|
| Presentation Title |
Hyper- and Multispectral Thermography for Quantitative In Process Temperature Mapping in Metal Additive Manufacturing |
| Author(s) |
Simon J. Altenburg, Alec Hilberg, Tina Walter, Philipp Peter Breese |
| On-Site Speaker (Planned) |
Simon J. Altenburg |
| Abstract Scope |
Accurate temperature mapping in and around the melt pool is key for material and process qualification in metal AM. It enables optimization of advanced strategies like beam shaping and may serve as a high-level in-situ standard for sensor calibration and process control. Rather than defining machine-dependent process windows, material-dependent (or even independent) thermal metrics for stable processes may become feasible once they are reproducibly measurable. We present a process-integrated approach using hyperspectral high-speed thermography in the short-wave infrared (SWIR) range for PBF-LB/M and multispectral thermography in the mid-wave infrared (MWIR) range for DED-LB/M. Temperature and spectral emissivity maps are reconstructed simultaneously via temperature–emissivity separation, while uncertainty is quantified through reconstruction residuals. Among others, the method is experimentally validated under real process conditions by correct reconstruction of solidification temperatures. By providing reliable in-process thermal data, this approach supports advanced control strategies and accelerates qualification in industrial metal AM. |
| Proceedings Inclusion? |
Undecided |