DEPENDENCE OF BEARING LIFE ON FILM THICKNESS TO SURFACE ROUGHNESS RATIO.

J. Y. LIU, T. E. TALLIAN, John I. McCool

Research output: Contribution to journalArticlepeer-review

Abstract

A STATISTICAL EXPRESSION, SHOWING AS A FUNCTION OF THE FILM PARAMETER (FILM THICKNESS/SURFACE ROUGHNESS OR H/SIGMA) THE FRACTIONAL REDUCTION IN FATIGUE LIFE AT 'FULL FILM' CONDITIONS DUE TO THE COMPETITION BETWEEN ASPERITY INDUCED FATIGUE AND FATIGUE DUE TO INDIGENOUS SURFACE DEFECTS AND SUBSURFACE INCLUSIONS, IS PRESENTED.SEVERAL SOURCES OF ENDURANCE TEST DATA RELATING THE FATIGUE LIFE OF A ROLLING BEARING TO THE FILM PARAMETER ARE REVIEWED.TO UNIFY THE EXPERIMENTAL DATA A 'RELATIVE' FATIGUE LIFE RAISED TO THE POWER OF E, THE WEIBULL DISPERSION PARAMETER, IS PLOTTED AGAINST THE FILM PARAMETER.COMPARISONS BETWEEN THE THEORETICAL AND EXPERIMENTAL RESULTS ARE THEN MADE WHICH REVEAL THAT THE INCREASE IN BEARING FATIGUE LIFE DUE TO THE FILM PARAMETER CAN BE DESCRIBED BY THE THEORETICAL MODEL WITH A 'REFERENCE' FILM PARAMETER VALUE OF 1.5 FOR H/SIGMA G 0.5.FOR H/SIGMA L 0.5, THE VARIATION OF H/SIGMA EXPLAINS ONLY A MINOR PORTION OF THE SCATTER OF THE FATIGUE LIVES.(A)

Original languageEnglish (US)
Pages (from-to)144-152
Number of pages9
JournalA.S.L.E. TRANS.
Volume18
Issue number2 (APRIL, 1975)
StatePublished - Jan 1 1975

All Science Journal Classification (ASJC) codes

  • Engineering(all)
  • Mechanics of Materials
  • Mechanical Engineering
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

Fingerprint

Dive into the research topics of 'DEPENDENCE OF BEARING LIFE ON FILM THICKNESS TO SURFACE ROUGHNESS RATIO.'. Together they form a unique fingerprint.

Cite this