Microball bearings can potentially provide robust and low friction support in micromachines such as micromotors and microgenerators. Their microtribological behavior needs to be investigated for design and control of such micromachines. In this paper a vision-based, non-intrusive measurement method is presented for characterization of friction in linear microball bearings. Infrared imaging is used to directly observe the dynamics of microballs and track the motion of bearing components. It is verified that microballs roll most of the time with occasional sliding or bumping resulting from fabrication nonuniformity. The friction-velocity curve demonstrates evident hysteresis. The dependence of frictional behavior on several factors is studied.
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ASME/STLE 2004 International Joint Tribology Conference
October 24–27, 2004
Long Beach, California, USA
Conference Sponsors:
- Tribology Division
ISBN:
0-7918-4181-2
PROCEEDINGS PAPER
Vision-Based Microtribological Characterization of Linear Microball Bearings
A. Modafe,
A. Modafe
University of Maryland, College Park, MD
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R. Hergert,
R. Hergert
University of Maryland, College Park, MD
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N. Ghalichechian,
N. Ghalichechian
University of Maryland, College Park, MD
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B. Shapiro,
B. Shapiro
University of Maryland, College Park, MD
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J. S. Baras,
J. S. Baras
University of Maryland, College Park, MD
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R. Ghodssi
R. Ghodssi
University of Maryland, College Park, MD
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X. Tan
University of Maryland, College Park, MD
A. Modafe
University of Maryland, College Park, MD
R. Hergert
University of Maryland, College Park, MD
N. Ghalichechian
University of Maryland, College Park, MD
B. Shapiro
University of Maryland, College Park, MD
J. S. Baras
University of Maryland, College Park, MD
R. Ghodssi
University of Maryland, College Park, MD
Paper No:
TRIB2004-64334, pp. 23-28; 6 pages
Published Online:
December 22, 2008
Citation
Tan, X, Modafe, A, Hergert, R, Ghalichechian, N, Shapiro, B, Baras, JS, & Ghodssi, R. "Vision-Based Microtribological Characterization of Linear Microball Bearings." Proceedings of the ASME/STLE 2004 International Joint Tribology Conference. ASME/STLE 2004 International Joint Tribology Conference, Parts A and B. Long Beach, California, USA. October 24–27, 2004. pp. 23-28. ASME. https://doi.org/10.1115/TRIB2004-64334
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