ASTM WK71520

    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;;


    Currently ASTM E561 has a number of validity requirements related to specimen size and proportions, the fatigue precrack, crack plane symmetry, and the rate of force application scattered throughout the main body of the standard. The intent of this ballot is to summarize the validity checks in a new section (also referencing their place in the main body of the standard) to make it easier for a user of the standard ensure they are meeting these requirements.

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    Work Item Status

    Date Initiated:

    Technical Contact:
    Kimberly Maciejewski

    Draft Under Development