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Influence of Rotor Metallurgy on the Wear of Friction Materials in Automotive Brakes
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English
Abstract
A drag dynamometer was used to investigate the influence of rotor properties on the wear of automotive brake linings. The effects on lining wear of temperature, surface roughness, thermal conductivity, microstructure and composition were studied quantitatively, and the mechanisms governing lining wear were elucidated. Lining wear at high temperatures increases exponentially with increasing temperature, and decreases exponentially with increasing thermal conductivity of the rotor. The wear increases parabolically with increasing surface roughness of the rotor. Also, coupling of a lining with a rotor having compatible composition and microstructure is very important for controlling the lining wear.
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Citation
Rhee, S., "Influence of Rotor Metallurgy on the Wear of Friction Materials in Automotive Brakes," SAE Technical Paper 710247, 1971, https://doi.org/10.4271/710247.Also In
References
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- Burwell, J. T. Jr. “Survey of Possible Wear Mechanisms.” Wear 1 119 1957-1958
- Rabinowicz E. “Friction and Wear of Materials.” New York John Wiley and Sons, Inc. 1965
- SAE Recommended Practice, Brake Lining Quality Control Test Procedure-SAE J661a SAE Handbook
- Spencer A. R. Spurgeon W. M. “Four Tests for Consistency of Automotive Brake Linings.” SAE Transactions 75 1967 paper 660912
- Nelson J. B. “Determination of Kinetic Parameters of Six Ablation Polymers by Thermogravimetric Analysis.” NASA TN D-3919 April 1967
- Rhee S. K. Turak J. L. Spurgeon W. M. “An Inertial Dynamometer Evaluation of Three Alloys for Automotive Brake Drums.” SAE Transactions 79 1970 paper 700138
- Gatrell R. L. Schreiber T. P. “Chemical Changes at Brake Wear Surfaces.” SAE Transactions 76 paper 670511