Paper Number 7.2
Erroneous
or Arrhenius - Potential Impact
of Oven Temperature Variations
on Laboratory Aging of Tires
Greg Altman
Michelin Americas
Research Company
515 Michelin Road
Greenville, South Carolina 29605
Email: greg.altman@us.michelin.com
Voice: (864) 422-4766
Fax: (864) 422-3519
Elizabeth Beutler
Bridgestone Firestone
North American Tire, LLC
Akron Technical Center
1200 Firestone Parkway
Akron,
OH 44301
John
Kohler
Chrysler Group, LLC.
800 Chrysler Drive
Auburn Hills, Michigan 48326
During the ASTM
F09.30 Tire Aging Task Group’s development of a test standard for the
accelerated oven aging of tires, seemingly erroneous results were obtained from
a single test method being conducted by multiple facilities. Ultimately these differences were associated
with variations in oven temperature among the sites involved. The Arrhenius Law provides a means of
understanding the potential impact of oven temperature variation on thermal
oxidative aging of tires and is used to draw inferences with respect to both
laboratory oven aging and in-service tire use.
Limitations of applying the Arrhenius equation, possible actions to
compensate for oven-to-oven and within-an-oven temperature variation, and suggestions
for potential validating experiments are also discussed.