Volume 13, Issue 1 (January 1985)

    Simple Determination of the Effective Young's Modulus of Rock by the Compliance Method

    CODEN: JTEOAD

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    Abstract

    A simple procedure for the determination of the effective Young's modulus of rock is presented. The method uses the elastic compliance calibration of fracture toughness test specimen geometry. Specimen compliance is measured with various sized three-point bend and compact tension specimens of granite. The experimental results show that the deformation behavior of the granite is significantly nonlinear and the specimen compliance is dependent on the loading level. A sharply notched specimen is successfully used to determine the effective Young's modulus rather than a fatigue precracked one because of the strong effect of fatigue loading on the specimen compliance. The effective Young's modulus evaluated by the compliance method coincides well with the Young's modulus determined from uniaxial tension tests and shows no specimen size or geometry effects. The effect of water environment on the effective Young's modulus is also investigated by this method.


    Author Information:

    Hashida, T
    Graduate student and professor, Research Institute for Strength and Fracture of Materials, Faculty of Engineering, Tohoku University, Sendai,

    Takahashi, H
    Graduate student and professor, Research Institute for Strength and Fracture of Materials, Faculty of Engineering, Tohoku University, Sendai,


    Stock #: JTE10764J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10764J

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    Author
    Title Simple Determination of the Effective Young's Modulus of Rock by the Compliance Method
    Symposium , 0000-00-00
    Committee D18