Fatigue Failure Distributions for Ball Bearings

[+] Author and Article Information
C. F. Smith

Transmission Research Dept., Rolls-Royce (1971) Limited, Derby, England

J. of Lubrication Tech 95(2), 123-130 (Apr 01, 1973) (8 pages) doi:10.1115/1.3451744 History: Received April 15, 1971; Revised November 23, 1971; Online October 18, 2010


High reliability requirements of aircraft gas turbine mainshaft ball bearings necessitate reliable methods for estimating fatigue lives in the early failure region of the life dispersion. Economical and rapid comparisons of surface fatigue lives of modern track materials demand extrapolation from limited numbers of rig results, using a statistical distribution which gives reasonable rectification of early failures. The investigation indicates that lognormal distributions are more satisfactory than Weibull distributions for low failure probabilities.

Copyright © 1973 by ASME
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