About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Advanced Characterization with Synchrotron, Neutron, and In Situ Laboratory-scale Techniques
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Presentation Title |
A-37: Real Time Observation of Binder Jetting Printing Process Using High-speed X-ray Imaging |
Author(s) |
Niranjan Parab, John Barnes, Cang Zhao, Ross Cunningham, Kamel Fezzaa, Anthony Rollett, Tao Sun |
On-Site Speaker (Planned) |
Niranjan Parab |
Abstract Scope |
A high-speed synchrotron X-ray imaging technique was used to investigate the binder jetting additive manufacturing (AM) process. A commercial binder jetting printer with droplet-on-demand ink-jet print-head was used to print single lines on powder beds. The printing process was recorded in real time using high-speed X-ray imaging. The ink-jet droplets showed distinct elongated shape with spherical head, long tail, and three to five trailing satellite droplets. Significant drift was observed between the impact points of main droplet and satellite droplets. The depth of disturbance in the powder bed from movement and ejection was defined as interaction depth, which was found to be dependent on the size, shape, and material of the powder particles. For smaller powder particles (diameter less than 10 microns), three consecutive binder droplets were observed to coalesce to form large agglomerates. The observations reported here will facilitate the understanding of underlying physics that govern the binder jetting processes. |
Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |