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TECHNICAL PAPERS

Design and Operation of a Droplet Deposition System for Freeform Fabrication of Metal Parts

[+] Author and Article Information
A. A. Tseng, M. H. Lee, B. Zhao

Department of Mechanical and Aerospace Engineering, Arizona State University, Tempe, AZ 85287-5106

J. Eng. Mater. Technol 123(1), 74-84 (Nov 23, 1999) (11 pages) doi:10.1115/1.1286187 History: Received May 05, 1999; Revised November 23, 1999
Copyright © 2001 by ASME
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References

Figures

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Schematic diagram of droplet deposition system
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Relationship between normalized growth rate and normalized wave number at various Ohnesorge and ambient Weber numbers
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Normalized optimal droplet diameter versus Ohnesorge number at various ambient Weber numbers
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Normalized optimal break-up length versus Ohnesorge number at various jet Weber numbers
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Experimental droplet deposition system
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Relationship between nozzle velocity and ejection pressure
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Micrograph of wax droplets using 254-μm diameter nozzle
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Micrograph of Sn95-Sb5 droplets using 203-μm diameter nozzle
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Normalized wax droplet diameter and its deviation produced at 4.56-m/s jet velocity
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Normalized wax droplet diameter and its deviation produced at 6.15-m/s jet velocity
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Normalized Sn95-Sb5 droplet diameter and its deviation produced at 2.26-m/s jet velocity
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Normalized Sn95-Sb5 droplet diameter and its deviation produced at 4.12-m/s jet velocity
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Stream of Sn95/Sb5 droplets using 203-μm diameter nozzle
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Top and bottom views of deposited Sn95/Sb5 layer at 0.10-m/s substrate velocity
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Top and bottom views of deposited Sn95/Sb5 layer at 0.18-m/s substrate velocity
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Normalized width deviation of deposited Sn95/Sb5 layer

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