Volume 19, Issue 2 (March 1991)

    Plastic η and γ Factors for Compact Tension Specimen in J-Integral Estimation

    (Received 16 March 1990; accepted 5 September 1990)

    CODEN: JTEOAD

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    Abstract

    The empirical expressions for the plastic η and γ factors adopted by ASTM in the standard test methods for Jlc and J-R curve testing (E 813 and E 1152) were determined from the results of experimental work. This note proposes instead expressions of ηp and γp that are derived from a limit load solution. The results show that over the range of crack lengths recommended for testing in the ASTM standard test methods, a/W = 0.5 to 0.75, the proposed ηp value is 5.11 to 1.42% greater than the ASTM value, and the proposed γp value is 12.93 to 5.82% greater.


    Author Information:

    Hu, JM
    University of Maryland, College Park, MD

    Albrecht, P
    University of Maryland, College Park, MD


    Stock #: JTE12549J

    ISSN: 0090-3973

    DOI: 10.1520/JTE12549J

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    Author
    Title Plastic η and γ Factors for Compact Tension Specimen in J-Integral Estimation
    Symposium , 0000-00-00
    Committee E08