Volume 7, Issue 1 (January 2010)

    Revisit of ASTM Round-Robin Test Data for Determining R Curves of Thin-Sheet Materials

    (Received 13 May 2009; accepted 24 September 2009)

    Published Online: 2009

    CODEN: JAIOAD

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    Abstract

    This paper revisits the ASTM round-robin fracture test data obtained in 1979–1980 by ASTM Task Group E24.06.02 on Application of Fracture Analysis Methods. The fracture tests were conducted using thin-sheet compact tension [C(T)] specimens made of three materials—7075-T561 aluminum alloy, 2024-T351 aluminum alloy, and 304 stainless steel—and different specimen widths were employed in order to take account of in-plane specimen size effect on fracture toughness. Typical experimental data are reanalyzed, and crack growth resistance curves are developed in accordance with fracture test standards, ASTM E561-05 and ASTM E1820-08. Several useful results as well as the conditions under which the two standards can equivalently determine a geometry-independent resistance curve are obtained for the thin-sheet C(T) specimens.


    Author Information:

    Zhu, Xian-Kui
    Senior Research Scientist, Battelle Memorial Institute, Columbus, OH

    Leis, Brian N.
    Senior Research Leader, Battelle Memorial Institute, Columbus, OH


    Stock #: JAI102510

    ISSN: 1546-962X

    DOI: 10.1520/JAI102510

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    Author
    Title Revisit of ASTM Round-Robin Test Data for Determining R Curves of Thin-Sheet Materials
    Symposium Ninth International ASTM/ESIS Symposium on Fatigue and Fracture Mechanics (37th ASTM National Symposium on Fatigue and Fracture Mechanics), 2009-05-22
    Committee E08