You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.


    Three Dimensions Versus Two Dimensions in Fracture Mechanics

    Published: Jan 1988

      Format Pages Price  
    PDF () 11 $25   ADD TO CART
    Complete Source PDF (16M) 11 $132   ADD TO CART


    This study shows that modern-day fracture mechanics has strictly two-dimensional origins. Certain difficulties arise, for example, in meeting fatigue crack-front straightness requirements. Some insight into this problem is available from an analytical study of an elastic thick plate with a central crack, the M(T) specimen. The study found that modest changes in the crack-front shape have a dramatic effect on the distribution of G, the elastic energy release rate. Further examination of the internal stress distribution shows that there is no region in the vicinity of the crack front that can be credibly described as plane stress, whereas an interior region sensibly replicates plane strain. Finally, a call is issued for the development of a three-dimensional fracture mechanics.


    fracture mechanics, two-dimensional fracture mechanics, three-dimensional fracture mechanics

    Author Information:

    Swedlow, JL
    Professor, Carnegie-Mellon University, Pittsburgh, PA

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP33071S

    CrossRef ASTM International is a member of CrossRef.