STP381

    Fracture Toughness Testing Methods

    Published: Jan 1965


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    Abstract

    A comprehensive survey is presented of current methods of fracture toughness testing that are based on linear elastic fracture mechanics. General principles are discussed in relation to the basic two-dimensional crack-stress field model, and in relation to real, three-dimensional specimens. The designs and necessary dimensions of specimens for mixed mode and opening mode (plane-strain) crack toughness measurements are considered in detail. Methods of test instrumentation and procedure are described. Expressions for calculation of crack toughness values are given for the common types of specimens.


    Author Information:

    Srawley, JE
    Head, Fracture Section, and chief, Strength of Materials Branch, Lewis Research Center, National Aeronautics and Space Administration, Cleveland, Ohio

    Brown, WF
    Head, Fracture Section, and chief, Strength of Materials Branch, Lewis Research Center, National Aeronautics and Space Administration, Cleveland, Ohio


    Paper ID: STP26588S

    Committee/Subcommittee: E08.07

    DOI: 10.1520/STP26588S


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