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    Prediction of the macroscopic mechanical properties of carbonate from nano-indentation tests

    Access Status
    Fulltext not available
    Authors
    Vialle, Stephanie
    Pazdniakou, A.
    Adler, P.
    Date
    2018
    Type
    Conference Paper
    
    Metadata
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    Citation
    Vialle, S. and Pazdniakou, A. and Adler, P. 2018. Prediction of the macroscopic mechanical properties of carbonate from nano-indentation tests.
    Source Title
    52nd U.S. Rock Mechanics/Geomechanics Symposium
    School
    WASM: Minerals, Energy and Chemical Engineering (WASM-MECE)
    URI
    http://hdl.handle.net/20.500.11937/73470
    Collection
    • Curtin Research Publications
    Abstract

    Copyright © 2018 ARMA, American Rock Mechanics Association. The nano-indentation technique was applied to microporous carbonates from the Easter Parisian Basin made of nearly 100% calcite. Room-dried, small, irregular pieces, 5mm thick and with a polished surface of about 1 cm2 are used. Then, the distribution function and the linear auto-correlation of the indentation modulus are derived from these data. The numerical analysis consists in generating random three dimensional media with a local indentation modulus M(x) which has the same statistical properties as the measured ones. This is achieved via a non linear transformation of normal correlated Gaussian fields. Then, the elasticity equation with variable Lamé coefficients is solved by a code based on lattice springs. The elastic velocities are derived and compared to the measured ones.

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