Typically, the life of a component containing rolling contacts is defined as the time to the initiation of a fatigue spall. Initiation of a spall does not always cause the component to stop performing its designed function. Operating the component past the initiation of a spall increases the heat generation rates and vibrations, eventually leading to total failure. A ball/v-ring test rig was used to initiate and progress spalls on bearing balls where spall progression was measured as a function of time, and vibrations monitored using accelerometers. A spall progression life mathematical model for balls endurance tested in the v-ring rig was created by extending the Ioannides–Harris fatigue life theory. Also, excessive vibratory loading was determined to be the major cause of total component failure.
Fatigue Failure Progression in Ball Bearings
Contributed by the Tribology Division of THE AMERICAN SOCIETY OF MECHANICAL ENGINEERS for presentation at the STLE/ASME Tribology Conference, Seattle, WA, October 1–4. Manuscript received by the Tribology Division Sept. 9, 1999; revised manuscript received March 9, 2000. Paper No. 2000-TRIB-3. Associate Editor: B. O. Jacobson.
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Kotzalas, M. N., and Harris, T. A. (March 9, 2000). "Fatigue Failure Progression in Ball Bearings ." ASME. J. Tribol. April 2001; 123(2): 238–242. doi: https://doi.org/10.1115/1.1308013
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