Title: Determining the true slip of a yield stress material
Authors: Clasen, Christian # ×
Issue Date: Oct-2012
Publisher: D. Steinkopff Verlag
Series Title: Rheologica Acta vol:51 issue:10 pages:883-890
Abstract: Within this paper we demonstrate the capability of the sliding plate configuration of the flexure-based microgap rheometer (FMR) to absolutely determine slip velocities of a yield stress fluid. The sensitivity of the compound flexures of the FMR in combination with the possibility to achieve precise gap settings down to 1 µm allows to accurately determining slip velocities down to 1 µm/s. We further show how the obtained non-linear relation of the slip velocity to the constant stresses of the plane Couette flow in the sliding plate configuration of the FMR allows predicting and explaining the inhomogeneous stress distribution and partial yielding behaviour in a rotational cone-and-plate geometry.
ISSN: 0035-4511
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Soft Matter, Rheology and Technology Section
× corresponding author
# (joint) last author

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