STP559

    Further Studies of Crack Propagation Using the Controlled Crack Propagation Approach

    Published: Jan 1974


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    Abstract

    In a previous paper, a new fracture-toughness-measuring technique was presented which made it possible to evaluate the functional relationship between load and cracklength at the moment of crack initiation or arrest. It was demonstrated that this relationship is directly relatable to the strain energy release rate and experimental results were presented for a 7075-T6 aluminum alloy.

    This paper presents the results of additional exploratory work as the concept is applied to more 7075-T6 aluminum, a 250 grade maraging steel, and AZ31B magnesium plate.

    Keywords:

    fracture properties, crack propagation, fracture strength, fracture tests, crack stability, fatigue (materials)


    Author Information:

    Weitzmann, RH
    Senior development engineer, Space Sciences Laboratory, and professor of Mechanical Engineering, University of California, Berkeley, Calif.

    Finnie, I
    Senior development engineer, Space Sciences Laboratory, and professor of Mechanical Engineering, University of California, Berkeley, Calif.


    Paper ID: STP38596S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP38596S


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