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TECHNICAL PAPERS

Elastohydrodynamic Film Collapse During Rapid Deceleration. Part I—Experimental Results

[+] Author and Article Information
R. P. Glovnea, H. A. Spikes

Tribology Section, Imperial College of Science, Technology and Medicine, London, United Kingdom

J. Tribol 123(2), 254-261 (Feb 11, 2000) (8 pages) doi:10.1115/1.1308011 History: Received October 25, 1999; Revised February 11, 2000
Copyright © 2001 by ASME
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References

Figures

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Principle of ultrathin film interferometry and experimental setup
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Central film thickness during rapid halting from initial speed 0.5 m/s
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Expanded time-scale plot of central film thickness collapse shown in Fig. 2
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The influence of initial speed upon central film thickness
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Film thickness profiles in sliding direction for PAO during rapid halting from initial speed 0.3 m/s
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Film thickness profiles transverse to sliding direction for PAO during rapid halting from initial speed 0.3 m/s
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(a) Decay in ball velocity during rapid halting from different initial speeds. (b) Central film thickness during rapid halting from different initial speeds
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Central film thickness collapse at six different halting times
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Dependence of central film thickness at end of first stage on halting time
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Comparison of measured film thickness collapse with steady-state prediction at 60 ms halting time (10 m/s2 deceleration rate)
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Comparison of measured film thickness collapse with steady-state prediction at 0.6 s halting time (1 m/s2 deceleration rate)
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Ball and disk surface speed variation during rapid halting
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Comparison of measured results with predictions of Hamrock and Dowson 43 steady-state formula in a pure rolling test (set stopping time of 5 ms)
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Central film thickness variation for three different decelerations, in pure rolling test
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The dependence of the film thickness at the end of the first stage of the time logarithm
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Comparison between experiment and theory due to Sugimura et al. 39

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