Nondestructive Evaluation of the Dynamic Elastic Moduli of Porous Iron Compacts

    Volume 32, Issue 1 (January 2004)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Page Count: 7


    Yeheskel, O
    Ben-Gurion University of the Negev, Beer-Sheva

    (Received 26 March 2002; accepted 10 June 2003)

    Abstract

    The effect of cold compaction and sintering of spherical iron powder on the dynamic elastic moduli of the partially densified material was studied. It was found that the elastic moduli of porous iron depend not only on density but also on the processing route that is followed. It was argued and demonstrated that the longitudinal sound velocity is more appropriate than density, as a parameter for quantitative nondestructive evaluation of the elastic moduli of porous iron. A general form of the dependence between the normalized elastic modulus M* and the normalized longitudinal sound wave velocity VL* was put forward: M* ≅(αVL*3 + βVL*2) C (v), where α and β are constants and C (v) is a function of the Poisson's ratio. This dependence was verified for the normalized bulk and shear moduli of porous iron compacts with data points from the literature.


    Paper ID: JTE11269

    DOI: 10.1520/JTE11269

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    Title Nondestructive Evaluation of the Dynamic Elastic Moduli of Porous Iron Compacts
    Symposium , 0000-00-00
    Committee E07