ASTM WK71519

    Revision of E561 - 19 Standard Test Method for KR Curve Determination

    (What is a Work Item?)

    Active Standard: E561 - 20

    Developed by Subcommittee: E08.07 | Committee E08 | Contact Staff Manager



    effective crack extension; fracture mechanics; fracture resistance; fracture toughness; KR ; KR curve; linear elastic; plane stress; plastic zone; standard test method; stress intensity factor;;


    WK69058 for E1823 had a recent ballot in 2019 on the definition of Kc and there were some negatives around using the work plane-stress when referring to non plane-strain conditions, either ideal plane-stress or more commonly the transition region between ideal plane-strain and plane-stress. This work item will address a similar issue using in the definition of apparent fracture toughness, Kapp. It is also the intent to add the definition of Kapp defined here in E561 to E1823.

    Citing ASTM Standards
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    Work Item Status

    Date Initiated:

    Technical Contact:
    Kimberly Maciejewski

    Draft Under Development