CYCLE COUNTING FATIGUE DAMAGE

This paper describes a recently introduced counting method and presents comparisons between various fatigue-life predictions based on this and another common cycle-counting method. This new technique is known as the rainflow or Pagoda-Roof method. It is compared in this document with Range-Mean analysis which has been used extensively in recent years. An essential step in the prediction of the fatigue life of vehicles and structures is the reduction of a service strain or stress history to a series of cycles and half cycles (ranges). This process is known as cycle counting and can be the source of large but unnecessary errors in the subsequent life prediction.

• Supplemental Notes:
  • Statistical Aspects of Fatigue Testing Symposium, Warwick University, February 12, 1975.
• Corporate Authors:

  Society of Environmental Engineers

  68 a Wigmore Street
  London W1H 9DL,   England 
• Authors:
  • WATSON, P
• Publication Date: 1975

Media Info

• Features: Figures; References;
• Pagination: 32 p.

Subject/Index Terms

• TRT Terms: Analysis; Data analysis; Fatigue (Mechanics); Forecasting; Loss and damage; Mathematical analysis; Railroad rails; Stresses; Structural analysis
• Uncontrolled Terms: Fatigue analysis; Fatigue life
• Old TRIS Terms: Analytical techniques; Cycles
• Subject Areas: Geotechnology; Highways; Materials;

Filing Info

• Accession Number: 00172615
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM