Shear localisation in interfacial particle layers and its influence on Lissajous-plots

Fabian C. Birbaum (Corresponding Author), Sanna Haavisto, Antti Koponen, Erich J. Windhab, Peter Fischer

    Research output: Contribution to journalArticleScientificpeer-review

    9 Citations (Scopus)

    Abstract

    Interfacial rheological measurements often show in their nonlinear Lissajous-plots rhombus or saddle-like shapes indicating complex local deformation behaviour. A strong interacting silica particle and an almost not interacting clay particle were studied in respect to their interfacial rheological properties. Large amplitude oscillation shear measurements were performed with a bicone geometry and combined with optical measurements, from which particle tracks were calculated. A correlation was found between the appearance of shear localisation and Lissajous-plot shapes. Silica particles showed shear localisation at the bicone edge and rhombic plateaus in the Lissajous-plot, while the shear localisation for the clay particles was observed at the cup's wall as saddle-like shaped Lissajous-plots.
    Original languageEnglish
    Pages (from-to)267-278
    JournalRheologica Acta
    Volume55
    Issue number4
    DOIs
    Publication statusPublished - 2016
    MoE publication typeA1 Journal article-refereed

    Keywords

    • nonlinear viscoelasticity
    • slipInterface
    • tracking
    • particle
    • LAOS

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