| About this Abstract |
| Meeting |
MS&T21: Materials Science & Technology
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| Symposium
|
Additive Manufacturing of Metals: Equipment, Instrumentation and In-Situ Process Monitoring
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| Presentation Title |
Combined In-situ Monitoring of Meltpool, Powder Layer, and Part Topography for Laser Powder Bed Fusion (LPBF) Based Metal Additive Manufacturing |
| Author(s) |
Xiayun Zhao |
| On-Site Speaker (Planned) |
Xiayun Zhao |
| Abstract Scope |
Comprehensive in-situ process monitoring is desired for metal additive manufacturing quality assurance and control, since it can provide critical insights of diverse process signatures and material behaviors. We have designed, developed, and deployed an in-house system for monitoring a commercial LPBF machine (EOS M290) to quantify ultrafast meltpool dynamics and layerwise powder bed and printed part surface topography. The synergistic in-situ monitoring approach has a great potential to diagnose online the process anomalies and part defects more thoroughly. In this talk, I will introduce the newly developed monitoring technology, which features a reinvented coaxial meltpool monitoring system in conjunction with an off-axis camera and an improved fringe projection based topography measurement method. Our cost-effective systems and LPBF-specific methods can be readily applicable to monitor other machines. I will also present our current experimental results and findings and conclude with a perspective of huge heterogeneous monitoring data analytics and computing. |