ASTM WK40520

    Work Item: ASTM WK40520 - New Test Methods for Modulus and Damping of Soils by Free-Free Resonant-Column Methods

    Developed by Subcommittee: D18.09 | Committee D18 | Contact Staff Manager



    1. Scope

    The proposed standard will describe use of the resonant column test method using the free-free apparatus. Transfer function methods for experimental measurement and theoretical analysis will also be detailed.

    The previous Standard (D4015-07: Standard Test Methods for Modulus and Damping of Soils by Resonant-Column Method) is currently under revision. The Working Group agreed to simplify D4015-07 by removing details related to the free-free apparatus and moving them to the proposed new Standard. The revision of D4015-07 will also incorporate new experimental and theoretical transfer function techniques for the fixed-free device. The Standard proposed herein will describe measurement and analysis by the transfer function approach for the free-free device, which is sufficiently different from that of the fixed-free device to warrant a separate Standard. The new standard will be used by researchers, government, and professionals who need to perform laboratory resonant column tests with a free-free device to characterize modulus and damping of soils as a function of various soil parameters.


    Keywords

    soil modulus, soil damping, resonant column, free-free, transfer function, random vibration

    The title and scope are in draft form and are under development within this ASTM Committee.

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