The growth of the fatigue crack under fluctuating load in which amplitude was assumed to be a random variable following Rayleigh distribution was discussed. The probability distribution function of the fatigue crack length after a number of load applications was given and the momentary risk and reliability functions were obtained using Griffith-Irwin criterion for catastrophic failure. Numerical simulations were carried out to check the result and compare it with Palmgren-Miner rule. It was shown that the fatigue lives estimated from Palmgren-Miner rule were much longer than those of the present model. The result was applied to a multiple-member structure to see its fail-safe capacity. Two methods were proposed to determine upper and lower bounds of reliability function of the structure.

  • Corporate Authors:

    Society of Naval Architects of Japan

    23 Shiba-kotohiracho, Minato-ku
    Tokyo 135,   Japan 
  • Authors:
    • Itagaki, H
    • Shinozuki, M
    • Freudenthal, A M
  • Publication Date: 1971

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00035099
  • Record Type: Publication
  • Source Agency: Society of Naval Architects of Japan
  • Files: TRIS
  • Created Date: Oct 27 1972 12:00AM