You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    If you are an ASTM Compass Subscriber and this document is part of your subscription, you can access it for free at ASTM Compass

    Life of Crack Initiation, Propagation, and Final Fracture under High-Temperature Creep, Fatigue, and Creep-Fatigue Multiplication Conditions

    Published: 01 January 1988

      Format Pages Price  
    PDF (312K) 21 $25   ADD TO CART
    Complete Source PDF (27M) 1279 $271   ADD TO CART

    Cite this document

    X Add email address send
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Studies were carried out on the crack initiation and propagation laws under high-temperature creep, fatigue, and creep-fatigue multiplication conditions for notched specimens of SUS 304 stainless steel.

    For crack initiation life, it was found that relative notch opening displacement (RNOD) can be used. Furthermore, the remaining part of crack initiation life can be predicted by RNOD criterion; that is, by recording RNOD with respect to the suitable time within the service term and extrapolating the data with a straight line until the line intersects the critical value of RNOD.

    The crack propagation life was expressed by a thermally activated type equation in explicit terms of independent parameters such as applied stress and temperature. The equation was approximately expressed in terms of the time-temperature equivalent parameter T(ℓn tp + C), where T = absolute temperature, tp = crack propagation life, and C = a nearly constant numerical factor. The experimental data are well expressed by this parameter.


    stainless steel, cumulative damage law, thermally activated process, crack propagation life equation, relative notch opening displacement, crack initiation life equation, evaluation, remaining life

    Author Information:

    Yokobori, AT
    Associate Professor, Tohoku University, Aoba, Sendai

    Yokobori, T
    Professor Emeritus and Graduate, Tohoku University, Aoba, Sendai

    Kuriyama, T
    Professor Emeritus and Graduate, Tohoku University, Aoba, Sendai

    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP24485S