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A Magnetic Coulter Counting Device for Wear Debris Detection in Lubrication

[+] Author Affiliations
Li Du, Joan Carletta, Robert Veillette, Jiang Zhe

The University of Akron, Akron, OH

Paper No. IMECE2009-10967, pp. 649-653; 5 pages
  • ASME 2009 International Mechanical Engineering Congress and Exposition
  • Volume 12: Micro and Nano Systems, Parts A and B
  • Lake Buena Vista, Florida, USA, November 13–19, 2009
  • Conference Sponsors: ASME
  • ISBN: 978-0-7918-4385-7 | eISBN: 978-0-7918-3863-1
  • Copyright © 2009 by ASME


A device based on a magnetic Coulter counting principle to detect metal particles in lubrication oil is presented. The device detects the passage of ferrous and non ferrous particles by monitoring inductance change in a coil. First, the sensing principle is demonstrated at the mesoscale using a solenoid. Next, a microscale device is developed using a planar coil. The device is tested using iron and aluminum particles ranging from 100μm to 500μm. The testing results show the device is capable of detecting and distinguishing ferrous and non-ferrous metal particles in lubrication oil. The design concept demonstrated here can be extended to a microfluidic device for online monitoring of ferrous and non-ferrous wear debris particles.

Copyright © 2009 by ASME
Topics: Wear , Lubrication



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