Vortex machining is a newly developed process that utilizes vortices generated by oscillating a micrometer sized fiber in colloidal abrasive slurry to remove material in highly localized regions [1]. Typical material removal footprints produced by our current machining process have micrometer sized lateral dimensions and nanometer depths with volumetric removal rates near 20 μm3 per hour. The carbon fiber attached to the tuning fork oscillator is approximately 7 μm in diameter and 4 mm in length. Resonant frequencies of the probe (fiber and tuning fork) are in the order of 30 kHz and oscillate with amplitudes of the fiber tip up to 50 μm. For these initial tests a silicon substrate has been machined using 0.05 μm alumina colloidal slurry and the resulting footprints were measured by a scanning white light interferometer. This paper provides details of the developed machining process, observations from initial test results, process metrology, and a short discussion of future process challenges.
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ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing
June 4–8, 2012
Notre Dame, Indiana, USA
Conference Sponsors:
- Manufacturing Engineering Division
ISBN:
978-0-7918-5499-0
PROCEEDINGS PAPER
Observations During Vortex Machining Process Development Available to Purchase
Stephen C. Howard,
Stephen C. Howard
UNC Charlotte, Charlotte, NC
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Jacob W. Chesna,
Jacob W. Chesna
UNC Charlotte, Charlotte, NC
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Brigid Mullany,
Brigid Mullany
UNC Charlotte, Charlotte, NC
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Stuart T. Smith
Stuart T. Smith
UNC Charlotte, Charlotte, NC
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Stephen C. Howard
UNC Charlotte, Charlotte, NC
Jacob W. Chesna
UNC Charlotte, Charlotte, NC
Brigid Mullany
UNC Charlotte, Charlotte, NC
Stuart T. Smith
UNC Charlotte, Charlotte, NC
Paper No:
MSEC2012-7272, pp. 25-31; 7 pages
Published Online:
July 19, 2013
Citation
Howard, SC, Chesna, JW, Mullany, B, & Smith, ST. "Observations During Vortex Machining Process Development." Proceedings of the ASME 2012 International Manufacturing Science and Engineering Conference collocated with the 40th North American Manufacturing Research Conference and in participation with the International Conference on Tribology Materials and Processing. ASME 2012 International Manufacturing Science and Engineering Conference. Notre Dame, Indiana, USA. June 4–8, 2012. pp. 25-31. ASME. https://doi.org/10.1115/MSEC2012-7272
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