MNL52

    An Introduction to the Development and Use of the Master Curve Method

    McCabe DE, Merkle JG, Wallin K
    Published: 2005


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    This new ASTM manual introduces the concept of the Master Curve Method so it can be understood and used by engineers who have had limited exposure to elastic-plastic fracture mechanics and/or advanced statistical methods. It addresses the practical design-related problem of defining the ductile-to-brittle fracture transition temperature of structural steels directly in terms of fracture mechanics data.

    Topics cover:
    • Background and historical aspects
    • Data validity requirements imposed on test data, and the number of data required to constitute a statistically useable data set for determining a reference temperature, To
    • Test specimens that can be used to develop valid KJc
    • Fixturing and test equipment needs
    • Preparation of specimens (precracking and side-grooving) for testing
    • Test machines, their mode of operation, and recommended specimen loading rates
    • All of the information needed to calculate values of KJc
    • Scale parameter statistical equations for material testing
    • Second option for calculating the To temperature that is useable when KJc data have been generated at various test temperatures
    • How the variability of KJc values is handled using the three-parameter Weibull model
    • Information on concepts under study
    • Brief discussion of important considerations involved in directly applying Master Curve fracture toughness data to the fracture-safety analysis of actual structures



    Committee: E08

    Paper ID: MNL52-EB

    DOI: 10.1520/MNL52-EB

    ISBN-EB: 978-0-8031-4559-7

    ISBN-PRINT: 978-0-8031-3368-6


    ASTM International is a member of CrossRef.

    0-8031-3368-5
    978-0-8031-3368-6
    MNL52-EB

    MNL 52