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


    Influence of Sheet Thickness upon the Fracture Resistance of Structural Aluminum Alloys

    Published: Jan 1973

      Format Pages Price  
    PDF () 11 $25   ADD TO CART
    Complete Source PDF (7.0M) 11 $125   ADD TO CART


    Definition of fracture resistance for thin sheet material in terms of the linear-elastic fracture mechanics (LEFM) plane-stress parameter, Kc, continues to reveal aspects of its geometrical dependency. The effect of sheet thickness upon the Kc value of five structural aluminum alloys in current use has been determined over available thickness ranges of 1/32 to 1/4 in. Within this range, less thickness dependence than anticipated has been observed. The fact that both economy and convenience would be served if fracture resistance for all sheet thicknesses could be estimated from a limited number of specimens have given impetus to several models purporting to explain this dependency in terms of the relative contributions of a surface phenomenon, flat fracture, and a volume sensitive mechanism, shear lip development. Attempts to fit present data to the model disclose inadequacies for which there is no apparent immediate solution.


    fracture properties, mechanical properties, stresses, aluminum alloys, failure, parameters, fatigue tests, crack propagation

    Author Information:

    Sullivan, A. M.
    Metallurgist, Naval Research Laboratory, Washington, D. C.

    Stoop, J.
    Metallurgist, Naval Research Laboratory, Washington, D. C.

    Freed, C. N.
    Head, Naval Research LaboratoryEnvironmental Protection Agency, WashingtonWashington, D. C.D.C.

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP49649S

    CrossRef ASTM International is a member of CrossRef.