Volume 37, Issue 4 (July 2009)

    Crack Mouth Opening Displacement-Based η Factors for SE(B) Specimens

    (Received 12 September 2008; accepted 11 April 2009)

    Published Online: 2009

    CODEN: JTEOAD

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    Abstract

    Three-dimensional finite element analysis of SE(B) fracture toughness specimens with crack sizes ranging from a/W=0.1–0.6 were performed to develop ηCMOD values for estimating Jpl in fracture toughness tests. The analyses included specimens with smooth sides and 20 % sidegrooves. The results for ηCMOD were 4–9 % lower than previously published results based on two-dimensional plane strain analysis. A simple linear expression for ηCMOD(a/W) was proposed for introduction into ASTM E1820 for calculating Jpl in SE(B) specimens with 0.05≤a/W≤0.7.


    Author Information:

    Petti, J. P.
    Sandia National Laboratories, Albuquerque, NM

    Dodds, Jr., R. H.
    University of Illinois at Urbana-Champaign, Urbana, IL

    Link, R. E.
    U.S. Naval Academy, Annapolis, MD


    Stock #: JTE102116

    ISSN: 0090-3973

    DOI: 10.1520/JTE102116

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    Author
    Title Crack Mouth Opening Displacement-Based η Factors for SE(B) Specimens
    Symposium , 0000-00-00
    Committee E08