Volume 27, Issue 4 (July 1999)

    A Method to Determine the Transition Point of Fatigue Crack Growth Rate from Near-ΔKth to Paris Regions

    (Received 5 September 1998; accepted 5 May 1999)

    CODEN: JTEOAD

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    Abstract

    The transition point of fatigue crack growth (FCG) between the near-ΔKth and the Paris regions is an important value to study fatigue behavior. This study introduces a curve-fitting technique to identify this point for nickel-based superalloy U720 with stress ratio of R = 0.1 at room temperature. The value of ΔKth under these conditions is also determined.


    Author Information:

    Zheng, J
    University of Reading, Reading,

    Powell, BE
    University of Portsmouth, Portsmouth,


    Stock #: JTE12229J

    ISSN: 0090-3973

    DOI: 10.1520/JTE12229J

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    Author
    Title A Method to Determine the Transition Point of Fatigue Crack Growth Rate from Near-ΔKth to Paris Regions
    Symposium , 0000-00-00
    Committee E08