Volume 5, Issue 5 (September 1977)

    Empirical Formulations for the Analysis and Prediction of Trends for Steady-State Fatigue Crack Growth Rates

    CODEN: JTEOAD

      Format Pages Price  
    PDF Version 11 $25   ADD TO CART


    Abstract

    The general characteristics of steady-state fatigue crack growth rates are discussed. An empirical formulation is described where two constants form a basic crack growth rate versus maximum stress intensity Kmax curve, which is a straight line on a log-log graph. The constants that form the base curves for various materials are correlated to Young's modulus. A third parameter that is sensitive to material alloy and environment is described and methods for obtaining this value are presented. Crack growth rate data for several stress ratios can then be projected to the basic modulus-dependent curve, where straight line scatter bands and statistical information pertaining to the overall accuracy of the formulations can be determined.


    Author Information:

    FitzGerald, JH
    Senior engineerMember of ASTM, Northrop Corporation, Aircraft Division, Hawthorne, Calif.


    Stock #: JTE10541J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10541J

    ASTM International is a member of CrossRef.

    Author
    Title Empirical Formulations for the Analysis and Prediction of Trends for Steady-State Fatigue Crack Growth Rates
    Symposium , 0000-00-00
    Committee E08