|About this Abstract
||MS&T21: Materials Science & Technology
||Additive Manufacturing of Metals: Equipment, Instrumentation and In-Situ Process Monitoring
||Plenoptic Imaging for In-situ PIV and Melt Pool Monitoring in Laser Directed Energy Deposition
||James C. Haley, Thomas Feldhausen, Vincent Paquit
|On-Site Speaker (Planned)
||James C. Haley
In Laser Powder Directed Energy Deposition, process performance critically depends on the highly dynamic bombardment of powder particles into a weld pool established by a laser energy source. To better characterize the stability of this process, we implement a plenoptic 2.0 camera in-situ to obtain real-time 3D volumetric Particle Image Velocimetry as well as melt pool topography in a single snapshot. This technique enables direct monitoring and control of the reshaping of carrier and shield gas flows as they interact with the arbitrary shape of the printed component, as well as the wetting behavior of the molten metal. This technique opens new avenues for defect recognition and predictive control algorithms to compensate for these effects. Using this method we envision a future of fully automated parameter tuning for modulating powder mixes for functionally graded materials.