STP856

    Suggestions for a Modification of ASTM E 813

    Published: Jan 1985


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    Abstract

    Some modifications of the present procedure for the determination of JIc are proposed to ensure better consistency of data. A new blunting line is proposed, which takes advantage of recent theoretical work concerning the crack-tip behavior and which shows good agreement with fractographical data. JIc is that point on the initial part of the R curve that is determined by the intersection of the R curve with an intercept line parallel to and by an amount Δa off the blunting line.

    Keywords:

    crack propagation, fracture tests, toughness, J, integral


    Author Information:

    Schwalbe, K-H
    Head of department and research engineer, GKSS Research Center Geesthact, Geethacht,

    Heerens, J
    Head of department and research engineer, GKSS Research Center Geesthact, Geethacht,


    Paper ID: STP34538S

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP34538S


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