Project Summary
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Project Information
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High strength fasteners and other components for
the aerospace industry are fabricated from high
purity metal stock originally cast in a vacuum arc
melt process, followed by one or more vacuum arc
re-melting (VAR) purification steps. The VAR
process is a continuous melt vacuum process which
removes elemental impurities, voids and other
defects, and refines the grain structure of the
final metal alloy. The electric current required to
melt a raw metal billet in the VAR process varies
according to the cross section of the billet being
fed into the furnace, which can vary considerably
along the length of the feedstock billet. Better
process control over the melt current can be
obtained if the diameter of each individual
feedstock billet is mapped along its’ length,
and the melt current is varied according to the
feedstock billet diameter being fed into the
furnace at any given moment. We wish to design and
build an non-contact diameter measurement system to
provide this information in line for each feedstock
billet being processed.
For a complete project description, click on the
following link for the Project
Readiness Package.
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Project Name
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VAR Billet Measurement System
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Project Number
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P12555
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Project Family
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N/A
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Start Term
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2011-2
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End Term
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2011-3
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Faculty Guide
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Dr. Alan Raisanen
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Primary Customer
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Benjamin Hailer (Special Metals)
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Sponsor (Financial Support)
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Special Metals
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Team Members
From Left: Michael Imhof, Jared Dodge, Brandon La Quay,
Michael Hvorecny, Michael Cheney
Table of Contents
Acknowledgements