Use of micro-tomography for validation of method to identify interfacial shear strength from tensile tests of short regenerated cellulose fibre composites

A. Hajlane, A. Miettinen, Bo Madsen, Justine Beauson, Robert Joffe

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    Abstract

    The interfacial shear strength of short regenerated cellulose fibre/polylactide composites was characterized by means of an industry-friendly adhesion test method. The interfacial shear strength was back-calculated from the experimental tensile stress-strain curves of composites by using a micro-mechanical model. The parameters characterizing the microstructure of the composites, e.g. fibre length and orientation distributions, used as input in the model were obtained by micro-tomography. The investigation was carried out on composites with untreated and surface treated fibres with various fibre weight contents (5wt%, 10wt%, and 15wt% for untreated fibres, and 15wt% for treated fibres). The properties of fibres were measured by an automated single fibre tensile test method. Based on these results, the efficiency of the fibre treatment to improve fibre/matrix adhesion is evaluated, and the applicability of the method to measure the interfacial shear strength is discussed. The results are compared with data from previous work, and with other results from the literature.
    Original languageEnglish
    JournalI O P Conference Series: Materials Science and Engineering
    Volume139
    Number of pages12
    ISSN1757-8981
    DOIs
    Publication statusPublished - 2016
    Event37th Risø International Symposium on Materials Science: Understanding performance of composite materials – mechanisms controlling properties - Risø Campus, Roskilde, Denmark
    Duration: 5 Sept 20168 Sept 2016

    Conference

    Conference37th Risø International Symposium on Materials Science
    LocationRisø Campus
    Country/TerritoryDenmark
    CityRoskilde
    Period05/09/201608/09/2016

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