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The Effect of Tire Break-In on Force and Moment Properties
ISSN: 0148-7191, e-ISSN: 2688-3627
Published February 01, 1977 by SAE International in United States
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A tire break-in procedure has historically been used prior to tire force and moment testing for three reasons: to reduce variability, stabilize the data, and simulate service. For low slip angle force and moment data it is shown that the tire break-in does not achieve these objectives.
Break-in is a result of viscoelastic changes and permanent deformation in the tire carcass materials, not a surface roughening or wear effect as has previously been assumed.
It is recommended that no break-in be used in low slip angle force and moment testing. This action would eliminate the break-in variable and lead to reduced testing variability and more stable data.
CitationMarshall, K., Phelps, R., Pottinger, M., and Pelz, W., "The Effect of Tire Break-In on Force and Moment Properties," SAE Technical Paper 770870, 1977, https://doi.org/10.4271/770870.
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- Phelps R.L., et.al., “The Mathematical Characteristics of Steady State Low Slip Angle Force and Moment Data”, SAE 760031, Detroit, Michigan, February, 1976.
- Ginn J.L., et.al., “The BFGoodrich Tire Dynamics Machine”, SAE 490B, Detroit, Michigan, March, 1962.
- Gehman S.D., “Material Characteristics”, In Mechanics of Pneumatic Tires, National Bureau of Standards Monograph 122, ed. by Clark S.K., November, 1971.
- Bueche F., Physical Properties of Polymers, Interscience Publishers, New York, 1972.