About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
|
Symposium
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Poster Session
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Presentation Title |
On Ultrasound Powder Stream Focusing and Applications to Powder-fed Laser Directed Energy Deposition |
Author(s) |
Alexander Martinez-Marchese, Mazyar Ansari, Asier Marzo, Marc Wang, Ehsan Toyserkani |
On-Site Speaker (Planned) |
Alexander Martinez-Marchese |
Abstract Scope |
Powder-fed laser directed energy deposition (LDED-PF) is a technique that can be used for both repairing and building metal components.
Usually, powder particles are conveyed using an aerodynamic nozzle to form a powder stream directed towards the melt pool, where the particles are melted due to the laser energy flux. The working distance of the nozzle can be varied to adjust the width of deposited tracks. However, this affects the resolution of the printed features due to a lower catchment efficiency and uneven heat transfer between the laser and the powder.
In this study, we propose the use of a novel ultrasound array to focus the particles in the powder stream using ultrasound radiation forces. The design of this novel ultrasound array will be presented and its effect of the sound field on the LDED-PF particle stream maximum concentration and effective width will be discussed. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |