The relationship between the direct stress and rotating bending fatigue strengths

It has been shown that inelastic deformation occurs when steel is fatigue cycled at stresses below the rotating- bending test fatigue limit. The resultant surface zone of plastically deformed material in rotating- bending fatigue test specimens redistributes the bending stress and increases the load carrying capacity. This increase in load carrying capacity is a function of the direct stress fatigue limit, the specimen diameter and the deformed zone depth. Assuming that this zone depth is a characteristic of any particular steel and is a function of the direct stress fatigue limit, a relationship between the rotating- bending fatigue limit and specimen diameter can be developed and is shown to be representative of published experimental data (a).

Language

  • English

Media Info

  • Pagination: 215-20

Subject/Index Terms

Filing Info

  • Accession Number: 01438176
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: Aug 24 2012 9:24PM