Time-resolved X-ray microtomographic measurement of water transport in wood-fibre reinforced composite material

Arttu Miettinen, Tero Harjupatana, Markku Kataja, Stefania Fortino, Kirsi Immonen

    Research output: Contribution to journalArticle in a proceedings journalScientificpeer-review

    Abstract

    Natural fibre composites are prone to adsorb moisture from the environment which may lead to dimensional changes, mold growth, degradation of mechanical properties or other adverse effects. In this work we develop a method for direct non-intrusive measurement of local moisture content inside a material sample. The method is based on X-ray microtomography, digital image correlation and image analysis. As a first application of the method we study axial transport of water in a cylindrical polylactic acid/birch pulp composite material sample with one end exposed to water. Based on the results, the method seems to give plausible estimates of water content profile inside the cylindrical sample. The results may be used, e.g. in developing and validating models of moisture transport in biocomposites.
    Original languageEnglish
    Article number012037
    Number of pages8
    JournalIOP Conference Series: Materials Science and Engineering
    Volume139
    Issue number1
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA4 Article in a conference publication
    Event29th Riso International Symposium on Materials Science, Energy materials: advances in characterization, modelling and application - Roskilde, Denmark
    Duration: 1 Sep 20085 Sep 2008

    Keywords

    • X-ray microtomography
    • wood-fibres
    • PLA
    • biocomposites
    • water tranport
    • ProperTune

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