Using hardness tests to quantify bulk plasticity and predict transition velocities in SiC materials

Corydon D. Hilton, James W. McCauley, Jeffrey J. Swab, Eugene R. Shanholtz, Ming W. Chen

    Research output: Contribution to journalArticlepeer-review

    6 Citations (Scopus)

    Abstract

    It has long been known that a relation exists between a material's hardness and its gross impact performance; however, the nature of this relationship has not been understood to a degree useful in materials development. Many studies have shown that harder ceramics tend to display better ballistic performance. In addition, some research has suggested that a material's potential for inelastic deformation (or its "quasi-plasticity" - a bulk property) may also play an important role in its resistance to penetration. Methods of quantifying the bulk plasticity of a ceramic material are, however, extremely limited. The current study continues an investigation into a recently proposed technique to (1) quantify bulk quasi-plasticity in SiC materials, and (2) use the "plasticity" value along with a hardness value to predict the transition velocity of potential armor ceramics. The transition velocity values predicted by this approach generally show excellent agreement (within 5% in most cases) with experimentally determined velocities. In addition, the robustness of this predictive technique is demonstrated through the use of multiple operators and multiple hardness testing units.

    Original languageEnglish
    Pages (from-to)114-122
    Number of pages9
    JournalInternational Journal of Applied Ceramic Technology
    Volume10
    Issue number1
    DOIs
    Publication statusPublished - 2013 Jan

    ASJC Scopus subject areas

    • Ceramics and Composites
    • Condensed Matter Physics
    • Marketing
    • Materials Chemistry

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