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A Comparative Study of Four Alloys for Automotive Brake Drums
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Sector:
Event:
Mid-Year Meeting
Language:
English
Abstract
A drag dynamometer was used to evaluate the performance of automotive brake drums made from four kinds of materials with different thermal conductivities. In the order of decreasing thermal conductivity they are chromium copper, aluminum/cast iron composite, cast iron, and nickel-aluminum bronze. All of the drums were of the standard configuration used in SAE J 661a, or closely approximated it. The drums were run in conjunction with three types of lining materials: nonabrasive, moderately abrasive, and highly abrasive. Temperatures near the lining/drum interface, coefficients of friction, and lining wear were measured and compared. For a given amount of work done, the temperature near the drum surface was found to be lowest for the chromium copper drums, with progressively higher temperatures in the aluminum/cast iron composite, nickel-aluminum bronze, and cast iron drums. Relative lining wear and coefficient of friction varied with the type of lining tested.
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Authors
Citation
Rhee, S., Rusnak, R., and Spurgeon, W., "A Comparative Study of Four Alloys for Automotive Brake Drums," SAE Technical Paper 690443, 1969, https://doi.org/10.4271/690443.Also In
References
- Teitelbaum B. R. Suttle W. C. Sung C. B. “Instrumentation Techniques for Brake Noise Investigation,” Paper No. 650488 , presented before the Society of Automotive Engineers Chicago, Illinois June 1965
- Spencer A. R. Spurgeon W. M. Winge J. L. “Four Tests for Consistency of Automotive Brake Linings,” Paper No. 660412 , presented before the Society of Automotive Engineers Detroit, Michigan June 1966