INTERDEPENDENCE OF EQUIVALENT STEADY STRESS, CRACK GROWTH AND FAILURE ON SEQUENCE AND AMPLITUDE OF IRREGULAR LOADING

This paper shows how to predict the minimum or other life of material limited by cyclic crack growth and crack failure as a function of the different sequences of amplitudes of loading that may occur under random, quasi-random, or controllable loading conditions. It is assumed that the incremental growth, as well as the criterion of failure, is independent of the history of loading and environment. The method covers the most commonly used law of crack growth and of crack failure. It is obviously applicable to other cyclically induced cumulative phenomena, e.g., degradation as in erosion or thermal fatigue.

• Corporate Authors:

  Army Materials and Mechanics Research Center

  Mechanics and Materials Division
  Watertown, MA  United States  02172
• Authors:
  • Beeuwkes Jr, R
• Publication Date: 1977-8

Media Info

• Features: References;
• Pagination: 20 p.

Subject/Index Terms

• TRT Terms: Cracking; Loads; Longitudinal cracking; Repeated loads; Stresses
• Uncontrolled Terms: Crack length; Crack propagation
• Old TRIS Terms: Crack stresses; Cyclic fatigue
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00168360
• Record Type: Publication
• Source Agency: Army Materials and Mechanics Research Center
• Report/Paper Numbers: AMMRC SP 77-9
• Files: TRIS
• Created Date: Jan 30 1978 12:00AM