About this Abstract |
Meeting |
2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
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Symposium
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2022 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2022)
|
Presentation Title |
Active Control of Selective Laser Flash Sintering of Ceramics |
Author(s) |
David Khanan, Desiderio Kovar, Joseph Beaman |
On-Site Speaker (Planned) |
David Khanan |
Abstract Scope |
Selective Laser Flash Sintering (SLFS) is a new additive manufacturing process that can enable a direct process for producing ceramic parts without the need for a polymer binder. In the SLFS process, an electric field is passed through the part while scanning a laser over the surface of the part. The electric field allows the laser to locally heat and bind the ceramic powder particles together at high scan speeds and relatively low temperatures by forming necks between the particles. Since SLFS is prone to temperature runaway that can result in cracking and/or melting, we are investigating the implementation of a closed loop optimal controller that can control temperature so that runaway can be avoided. This is implemented by monitoring the current flowing through the sample in situ and adjusting the electric field applied to the sample in real time so that the temperature remains below the specified temperature. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |