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 language | English |
|---|---|
| Pages (from-to) | 267-278 |
| Journal | Rheologica Acta |
| Volume | 55 |
| Issue number | 4 |
| DOIs | |
| Publication status | Published - 2016 |
| MoE publication type | A1 Journal article-refereed |
Keywords
- nonlinear viscoelasticity
- slipInterface
- tracking
- particle
- LAOS