STP1114

    Experience with the Use of the New ASTM E 813-87

    Published: Jan 1991


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    Abstract

    In this paper the impact of recent changes in ASTM Test Method for JIc, a Measure of Fracture Toughness (E 813) are evaluated. JIc was determined from a large number of J-R curves using both the 1981 and the 1987 versions of ASTM E 813. The value of JIc is usually from 10 to 15% higher when measured according to the new version of the standard. The scatter in the measured JIc values was not affected by the revisions. Although the revisions to the standard removed a number of difficulties with its use, one problem still remains to be resolved. ASTM E 813 should be revised to include some guidance for correcting a0 so that the blunting line fits the data in the early portion of the J-R curve when a J-R curve from ASTM Test Method for Determining J-R Curves (E 1152-87) is used.

    Keywords:

    elastic-plastic fracture, test methods, J-R, curve, J, Ic, test standards, fracture toughness


    Author Information:

    Van Der Sluys, WA
    Scientist and group supervisor, Babcock & Wilcox, Alliance, OH

    Wade, CS
    Scientist and group supervisor, Babcock & Wilcox, Alliance, OH


    Paper ID: STP16844S

    Committee/Subcommittee: E08.93

    DOI: 10.1520/STP16844S


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