Preparing 3D functional gradients for SLS
Preparing 3D functional gradients for SLS
The creation of three dimensional functional graded materials by powder processing methods requires the capability to arrange a sequence of two dimensional images that can be presented to a solid freeforming device. Planar stacking methods can only achieve a one dimensional gradient. We describe the acoustic control of powder metering and dispensing valves in which the flow rate and switching of powders from a capillary can be controlled using the frequency and amplitude of acoustic vibration from a computer sound card. An orchestra of such valves can be used to pattern layers of powder on the building platform which forms part of a 3-axis table in the Selective Laser Sintering (SLS) process. Patterns and gradients were prepared using copper and steel powders.
powder flow, powder dispensing, solid freeforming, functional graded
749-754
Yang, Shou Feng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R.G.
4eee463a-4dd3-4ef2-b9bc-784246b68ad2
August 2005
Yang, Shou Feng
e0018adf-8123-4a54-b8dd-306c10ca48f1
Evans, Julian R.G.
4eee463a-4dd3-4ef2-b9bc-784246b68ad2
Yang, Shou Feng and Evans, Julian R.G.
(2005)
Preparing 3D functional gradients for SLS.
Van der Biest, Omer, Gasik, Michael and Vleugels, Jozef
(eds.)
In Functionally Graded Materials VIII.
vol. 492-493,
Trans Tech Publications.
.
(doi:10.4028/www.scientific.net/MSF.492-493.749).
Record type:
Conference or Workshop Item
(Paper)
Abstract
The creation of three dimensional functional graded materials by powder processing methods requires the capability to arrange a sequence of two dimensional images that can be presented to a solid freeforming device. Planar stacking methods can only achieve a one dimensional gradient. We describe the acoustic control of powder metering and dispensing valves in which the flow rate and switching of powders from a capillary can be controlled using the frequency and amplitude of acoustic vibration from a computer sound card. An orchestra of such valves can be used to pattern layers of powder on the building platform which forms part of a 3-axis table in the Selective Laser Sintering (SLS) process. Patterns and gradients were prepared using copper and steel powders.
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More information
Published date: August 2005
Venue - Dates:
8th International Symposium on Multifunctional and Functionally Graded Materials (FMG2004), Leuven, Belgium, 2004-07-11 - 2004-07-11
Keywords:
powder flow, powder dispensing, solid freeforming, functional graded
Organisations:
Engineering Mats & Surface Engineerg Gp
Identifiers
Local EPrints ID: 165081
URI: http://eprints.soton.ac.uk/id/eprint/165081
PURE UUID: cd25e983-5608-4f8d-bc9f-d520fc226868
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Date deposited: 07 Oct 2010 14:25
Last modified: 14 Mar 2024 02:09
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Contributors
Author:
Julian R.G. Evans
Editor:
Omer Van der Biest
Editor:
Michael Gasik
Editor:
Jozef Vleugels
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