A Hybrid Film Thickness Evaluation Scheme Based on Multi-Channel Interferometry and Contact Mechanics

[+] Author and Article Information
J. Lord, A. Jolkin, R. Larsson

Division of Machine Elements, Luleå University of Technology, SE-971 87 Luleå, Sweden

O. Marklund

Division of Industrial Electronics, Luleå University of Technology, SE-971 87 Luleå, Sweden

J. Tribol 122(1), 16-22 (Jun 29, 1999) (7 pages) doi:10.1115/1.555324 History: Received March 05, 1999; Revised June 29, 1999
Copyright © 2000 by ASME
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Idealized ball and disk apparatus (BDA)
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Spectral sensitivity functions
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Separation between ball and disc in static contact at three loads
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Three dimensional representations of the separation for the three static condition cases: (a) 19.7 N, (b) 28.8 N, (c) 42.5 N
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Dynamic conditions. (a) uD=0.77 m/sΣ=1.0, (b) uD=0.95Σ=2.8, (c) uD=1.12Σ=3.0, (d) uD=1.34Σ=4.0
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Film thickness profiles, with and without compensation for refractive index-pressure dependence, shown together with the corresponding pressure profile
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Film thickness maps obtained with the multi-channel method (corrected for refractive index dependence), (a–d) refer to Fig. 5
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Pressure maps evaluated from film thickness maps in Fig. 7, (a–d) refer to Fig. 5




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