| About this Abstract |
| Meeting |
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
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| Symposium
|
2023 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2023)
|
| Presentation Title |
Monitoring of Single-track Quality in Laser Powder Bed Fusion using In-situ Thermionic Sensing |
| Author(s) |
Benjamin D. Bevans, Philip DePond, Aiden Martin, Nick Calta, J-B Forien, Gabe Guss, Brian Giera, Prahalada Rao |
| On-Site Speaker (Planned) |
Benjamin D. Bevans |
| Abstract Scope |
This work concerns the laser powder bed fusion (LPBF) additive manufacturing process. In this work track quality was monitored in-situ using a novel thermionic sensing approach. It is important to monitor the quality of the track in LPBF as it is the basic building block of the part. In this work, track quality is defined as track width and the percent continuity of the track. The objective of this work is to detect the onset of track deviations using signatures extracted from a novel thermionic sensor. This thermionic sensor is attached to the substrate and measures the voltage response of the electrons released when the laser interacts with the build plate. The signals from the thermionic sensor are analyzed using empirical mode decomposition, and the derived signatures are used subsequently within elementary machine learning models to predict the quality of track. |
| Proceedings Inclusion? |
Definite: Post-meeting proceedings |