STP627

    Towards Development of a Standard Test for Measuring KIa

    Published: Jan 1977


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    Abstract

    Measurement of KIa requires the production of a run-arrest segment of crack extension in a laboratory specimen and evaluation of the stress intensity factor a short time after the crack has arrested. The crack should propagate under conditions which simulate propagation in a thick section. Progress towards meeting these requirements with tests on tapered-double-cantilever-beam specimens is described. Aspects which require further clarification are discussed.

    Keywords:

    crack propagation, stress intensity, crack arrest, measurements, crack initiation, fracture properties


    Author Information:

    Crosley, PB
    Principal scientist and director of research, Materials Research Laboratory, Inc., Glenwood, Ill.

    Ripling, EJ
    Principal scientist and director of research, Materials Research Laboratory, Inc., Glenwood, Ill.


    Paper ID: STP27399S

    Committee/Subcommittee: E08.03

    DOI: 10.1520/STP27399S


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