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    Determining Crack Extension Using a Displacement Based Key-Curve Method

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    A method for determining crack-growth resistance curves previously proposed by the author is derived from fundamental relationships. Data are presented that further demonstrate the application of the method to materials having a wide range of properties. It is concluded that the use of this method results in obtaining fracture properties not previously measured directly.


    ductile fracture, tests, crack propagation, crack-growth resistance curves, crack-opening displacement, J, integral, compact specimen

    Author Information:

    Andrews, WR
    Engineer of advanced mechanics of materials, Turbine Technology Laboratory, General Electric Company, Schenectady, NY

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP34532S