Characterization of Disc Wear Particles Transferred to the NAO Pad Surface: Brake Squeal

Paper #:
  • 2015-01-2684

Published:
  • 2015-09-27
DOI:
  • 10.4271/2015-01-2684
Citation:
Lee, S., Kim, S., Kim, S., and Rhee, S., "Characterization of Disc Wear Particles Transferred to the NAO Pad Surface: Brake Squeal," SAE Technical Paper 2015-01-2684, 2015, doi:10.4271/2015-01-2684.
Abstract:
Rear disc brake squeal test results confirm the disc wear - brake squeal correlation reported earlier on front disc brakes. A significant amount of Fe transferred from the disc to the NAO pad surface is detected and the distribution of the transferred Fe is very non-uniform on the pad surface. The pad surface formulation reaches that of Low-Steel Lomets. Disc pads from a noisier brake retain more transferred particles than from a less noisy brake. The pad surface retains more transferred Fe after noise test procedures than after performance test procedures. The transferred Fe particles are either barely visible or invisible. During brake noise test procedures, discs wear in weight as much as disc pads. No correlation is found between average in-stop Mu, maximum in-stop Mu or in-stop delta Mu and brake squeal.
Access
Now
SAE MOBILUS Subscriber? You may already have access.
Buy
Select
Price
List
Download
$27.00
Mail
$27.00
Members save up to 40% off list price.
Share
HTML for Linking to Page
Page URL

Related Items

Training / Education
2017-08-15
Technical Paper / Journal Article
2010-09-28
Training / Education
2011-04-12