This paper describes a capacitance sensing method to detect oil debris contents. Experimental investigations are conducted for both static and dynamic measurements. Static measurements are performed by inserting small metal wires into the oil sample between the two plate electrodes of a capacitor. With a gap of 7mm between the electrodes, it was found that the capacitance measurement can detect metal wires as small as 4 mils (101 μm) in diameter. While measurements of ferrous and the non-ferrous wires show certain measurable differences, a systematic difference between the two sets of measurements cannot be established. The dynamic measurements were conducted by measuring the changes in capacitance between two plate electrodes when a small particle was dropped into the oil between the two electrodes. The passage of a metal particle can be dynamically detected. It is expected that smaller metal debris particles can be detected by reducing the spacing between the two electrode plates in microchannels.
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STLE/ASME 2008 International Joint Tribology Conference
October 20–22, 2008
Miami, Florida, USA
Conference Sponsors:
- Tribology Division
ISBN:
978-0-7918-4336-9
PROCEEDINGS PAPER
Oil Debris Detection Using Static and Dynamic Capacitance Measurements
X. Xia
X. Xia
University of Akron, Akron, OH
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S. V. Murali
University of Akron, Akron, OH
F. K. Choy
University of Akron, Akron, OH
J. Zhe
University of Akron, Akron, OH
J. Carletta
University of Akron, Akron, OH
X. Xia
University of Akron, Akron, OH
Paper No:
IJTC2008-71280, pp. 241-243; 3 pages
Published Online:
June 5, 2009
Citation
Murali, SV, Choy, FK, Zhe, J, Carletta, J, & Xia, X. "Oil Debris Detection Using Static and Dynamic Capacitance Measurements." Proceedings of the STLE/ASME 2008 International Joint Tribology Conference. STLE/ASME 2008 International Joint Tribology Conference. Miami, Florida, USA. October 20–22, 2008. pp. 241-243. ASME. https://doi.org/10.1115/IJTC2008-71280
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