| About this Abstract |
| Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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| Symposium
|
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
| Presentation Title |
In-Situ Layer-Wise Generation of 3D Thermal Point Clouds for AM via Embedded 3D Scanning and Thermal Data Fusion |
| Author(s) |
Tadeusz Kosmal, Bemnet Molla, Henry Claesson, Samuel Pratt, Christopher Williams |
| On-Site Speaker (Planned) |
Tadeusz Kosmal |
| Abstract Scope |
Additive Manufacturing (AM) processes pattern heat and/or material to construct part geometries in a layer-wise manner. Understanding heat location and its flux throughout a build process is critical because it affects deposition geometry, final material properties, and throughput. In-situ metrology of thermal history in AM is important; however, existing thermal measurement techniques rely on single point measurements (e.g., thermocouple) or a planar thermography of the part, which limit spatial understanding of a part’s thermal history. To capture a complete “thermal” Digital Twin of a part during construction, the authors combine in-situ 3D scanning and thermography to form layer-wise “thermal point clouds”. A novel calibration methodology is presented that fuses thermography results with high resolution (< 0.3mm) Structured Light scans to obtain part thermal history at resolutions (< 3mm) required in manufacturing. The proposed methodology is integrated in wire-arc directed energy deposition and validated against single point measurements from embedded thermocouples. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |