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TECHNICAL PAPERS

Use of Electrostatic Charge Monitoring for Early Detection of Adhesive Wear in Oil Lubricated Contacts

[+] Author and Article Information
S. Morris, R. J. K. Wood, T. J. Harvey

School of Engineering Sciences, University of Southampton, Southampton, Hampshire, SO17 1BJ, United Kingdom

H. E. G. Powrie

Stewart Hughes Limited, School Lane, Eastleigh, Hampshire, SO53 4YG, United Kingdom

J. Tribol 124(2), 288-296 (Jun 19, 2001) (9 pages) doi:10.1115/1.1398293 History: Received February 27, 2001; Revised June 19, 2001
Copyright © 2002 by ASME
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References

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Figures

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Schematic diagram of charge generation
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Conceptual view of triboemission
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The schematic representation of different lubrication and adhesive wear regimes
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(a) Schematic diagram of the non-contact test setup; (b) relative position of sensors; and (c) plan view of disc with an insert.
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Schematic diagram of the scuffing test setup and relative position of sensors
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Block diagram of the instrumentation used
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Sensor 1 signal average from a blank B. S. 534A99 disc
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Sensor 1 and sensor 2 signal average from B. S. 534A99 disc with copper insert
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Sensor 1 signal average from B. S. 534A99 disc with aluminum insert
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Sensor 1 signal average from B. S. 534A99 disc with B. S. 534A99 insert
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Sensor 1 signal average from B. S. 534A99 disc with carbon steel insert
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Sensor 1 signal averages no. 77 and 78 from mineral base oil scuff test positive peaks caused by larger oil droplets on the disc surface which have moved position between the averages
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(a) Sensor 1 signal averages no. 60 and 180 from mineral base oil scuff test. Average no. 60 is a baseline average similar to that shown in Fig. 8; and (b) difference between signal averages no. 60 and 180 mineral base oil scuff test highlighting peaks at 15 deg, 148 deg, 165 deg, 190 deg, 218 deg, 257 deg, 307 deg, and 356 deg and troughs at 50 deg and 85 deg.
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(a) Sensor 1 signal averages no. 100 and 800 from fully formulated synthetic oil scuff test. Average no. 10 is a baseline average, similar to that shown in Fig. 8; and (b) difference between signal averages no. 100 and 800 formulated synthetic oil scuff test highlighting troughs at 107 deg, 153 deg, 217 deg, 312 deg, and 332 deg.

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