X-ray microtomography of damage in particle-reinforced metal matrix composites

P. M. Mummery, B. Derby, P. Anderson, G. Davis, J. C. Elliott

    Research output: Contribution to journalArticlepeer-review


    The damage which occurs on plastic straining of silicon carbide particle-reinforced aluminum alloys has been characterized using x-ray microtomography. The technique is used to provide density measurements as a function of strain in addition to imaging the internal structure with a resolution of ≈15μ. This allows a much more accurate determination of microstructural damage in terms of void growth than is available from measurements of density using buoyancy methods or from elastic modulus decrease. These data can be combined with acoustic emission measurements during straining to allow damage nucleation and growth contributions to be separated.
    Original languageEnglish
    Pages (from-to)1857-1860
    Number of pages3
    JournalJournal de Physique IV
    Issue number7
    Publication statusPublished - Nov 1993


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