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Release of acoustic energy during the fatiguing of a rolling-element bearing

Author

Listed:
  • Bashir, I.
  • Bannister, R.
  • Probert, D.

Abstract

A simple theoretical model has been developed to describe the acoustic energy generated when a fine crack grows in a fatiguing rolling-element steel-bearing in the gearbox of a helicopter during flight. The acoustic-impulse's amplitude (at the bearing) and duration increase from 9.8 x 10-12 to 29.0 x 10-12 m, and from 0.1 to 1 [mu]s, respectively, as the crack growth becomes critical. The detection and measurement of this acoustic energy can lead to the prediction of the associated crack-growth.

Suggested Citation

  • Bashir, I. & Bannister, R. & Probert, D., 1999. "Release of acoustic energy during the fatiguing of a rolling-element bearing," Applied Energy, Elsevier, vol. 62(3), pages 97-111, March.
    • Handle: RePEc:eee:appene:v:62:y:1999:i:3:p:97-111
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