Brake Squeal and Disc Metallurgy Variability: Importance of Disc Wear

Paper #:
  • 2014-01-2491

Published:
  • 2014-09-28
DOI:
  • 10.4271/2014-01-2491
Citation:
Lee, S., Jeong, J., Kim, S., Kim, S. et al., "Brake Squeal and Disc Metallurgy Variability: Importance of Disc Wear," SAE Technical Paper 2014-01-2491, 2014, doi:10.4271/2014-01-2491.
Pages:
9
Abstract:
A previous investigation showed that minor variations in alloying elements in gray cast iron disc contributed to measurable differences in friction and disc wear. This investigation was undertaken to find out if and how the increased friction and disc wear might affect brake squeal. The SAE J2522 and J2521 dynamometer procedures as well as an OEM noise dynamometer procedure and a chassis dynamometer noise procedure were used to find out if a correlation between disc wear and brake squeal could be discovered. In all cases, as the wear rate of a disc increases under a given set of test conditions, disc material transfer to the pad surface increases, which results in increased friction and brake squeal. Also a good method to detect disc variability (disc to disc, within a disc) is discussed.
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

Article
2016-09-06
Article
2016-08-24
Technical Paper / Journal Article
2010-09-28
Standard
2010-03-02
Training / Education
2012-02-23