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    STP1231

    Procedure for Automated Tests of Fatigue Crack Propagation

    Published: 01 January 1994


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    Abstract

    This paper describes a computer program and its periphery that allows the determination of da/dN - ΔK curves: fatigue crack propagation threshold, ΔKth: and the crack opening stress intensity factor, Kop. The main requirement on the computer program is that no a priori knowledge about the material or the test procedure is required of the operating personnel.

    Keywords:

    fatigue crack propagation, test automation, da/dN, -curve, fatigue crack propagation threshold, crack opening stress intensity factor, fracture (materials), fatigue (materials), testing methods, data analysis


    Author Information:

    Bachmann, V
    Senior research engineer, branch head, and electronic specialist, DLR-German Aerospace Research Establishment, Institute for Materials Research, Cologne,

    Marci, G
    Senior research engineer, branch head, and electronic specialist, DLR-German Aerospace Research Establishment, Institute for Materials Research, Cologne,

    Sengebusch, P
    Senior research engineer, branch head, and electronic specialist, DLR-German Aerospace Research Establishment, Institute for Materials Research, Cologne,


    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP13947S