A resume is given of some basic concepts relating to the fatigue of steels, leading to the differentiation between the crack initiation and crack propagation stages of the process, and then to the application of fracture mechanics concepts for monitoring the rate of propagation of fatigue cracks. Reference is made to the four main fatigue design philosophies - infinite-life, safe-life, fail-safe and damage-tolerant - and to the fatigue design requirements of various codes and specifications. Particular attention is given to the fatigue properties of welded and bolted joints in different steels. It is shown that, when relatively long fatigue lives are involved, the fatigue performance of a structure is dependent primarily on the detail design and configuration of the joints incorporated in its manufacture; the steel actually selected for the product having only a secondary influence on its behavior under repeated loads. In the case of low-cycle fatigue, or under conditions of high static mean stress, the choice of a high static tensile steel may, nevertheless, be well justified. /Author/TRRL/

  • Supplemental Notes:
    • Presented at the First Australian Conference on Engineering Materials.
  • Corporate Authors:

    University of New South Wales

    School of Civil Engineering, Anzac Parade
    Kensington, New South Wales  Australia  2033
  • Authors:
    • Mann, J Y
  • Publication Date: 0

Media Info

  • Features: Figures; References; Tables;
  • Pagination: 85 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00126195
  • Record Type: Publication
  • Source Agency: Transport and Road Research Laboratory (TRRL)
  • Report/Paper Numbers: Conf Paper
  • Files: ITRD, TRIS
  • Created Date: Apr 21 1976 12:00AM