| 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 |
Low-Cost Calibration Plate for Enhanced In-Situ Monitoring in Laser-Powder Bed Fusion (L-PBF) |
| Author(s) |
Brett Brady, Caleb Campbell, Shuchi Khurana, Bradley Jared |
| On-Site Speaker (Planned) |
Brett Brady |
| Abstract Scope |
Laser-Powder Bed Fusion (L-PBF) additive manufacturing relies on precise control for quality assurance and reproducibility. In-situ monitoring is crucial for achieving these goals. We introduce a multi-modal calibration plate to enhance monitoring in L-PBF machines. Designed with materials of varying emissivity, it accommodates Near-Infrared (NIR) and infrared (IR) cameras. This plate facilitates the acquisition of multi-angle perspectives, allowing for camera mounting to differ between or within machines. By integrating different modalities and angles, calibrated overlays provide real-time insight into the printing process. Work demonstrated here involves a Pixelink NIR camera (visible wavelengths) and a FLIR A-50 IR camera (infrared wavelengths). Using a homography matrix, computed via the least squares method, perspective transformations ensure accurate imaging during printing. Work is currently ongoing to quantify the accuracy of the method, its repeatability, and its reproducibility. The error is expected not to exceed 3mm in any direction. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |