STP601: Mixed Mode Fracture in Anisotropic Media

    Williams, JG
    Professor of polymer engineering and research assistant, Imperial College, London,

    Birch, MW
    Professor of polymer engineering and research assistant, Imperial College, London,

    Pages: 13    Published: Jan 1976


    Abstract

    Tests were performed on straight-grained timber to give Mode I fractures in three geometries, and satisfactory K1 data were produced. Mode II tests were more difficult to perform, and the data correlated on a constant net section shear stress basis indicated some form of shear yielding failure. The mixed mode tests used tension specimens with the grain at various angles, and very good data were obtained which gave a constant KIc fracture criterion independent of KII.

    Keywords:

    crack propagation, fractures (materials), anisotropy, mixed mode


    Paper ID: STP28641S

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP28641S


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