A review of nonlinear oscillatory shear tests: Analysis and application of large amplitude oscillatory shear (LAOS)
Dynamic oscillatory shear tests are common in rheology and have been used to investigate
a wide range of soft matter and complex fluids including polymer melts and solutions, block …
a wide range of soft matter and complex fluids including polymer melts and solutions, block …
New measures for characterizing nonlinear viscoelasticity in large amplitude oscillatory shear
Characterizing purely viscous or purely elastic rheological nonlinearities is straightforward
using rheometric tests such as steady shear or step strains. However, a definitive framework …
using rheometric tests such as steady shear or step strains. However, a definitive framework …
Fourier‐transform rheology
M Wilhelm - Macromolecular materials and engineering, 2002 - Wiley Online Library
The application of large amplitude oscillatory shear (LAOS) leads, in the non‐linear regime,
to a torque response that contains higher mechanical harmonic contributions. These …
to a torque response that contains higher mechanical harmonic contributions. These …
Large amplitude oscillatory shear of pseudoplastic and elastoviscoplastic materials
We explore the utility of strain-controlled large amplitude oscillatory shear (LAOS)
deformation for identifying and characterizing apparent yield stress responses in …
deformation for identifying and characterizing apparent yield stress responses in …
Establishing a New Mechanical Nonlinear Coefficient Q from FT-Rheology: First Investigation of Entangled Linear and Comb Polymer Model Systems
K Hyun, M Wilhelm - Macromolecules, 2009 - ACS Publications
The nonlinear response of monodisperse linear and comb polymer melts has been
investigated under oscillatory shear with Fourier-transform rheology (FT-rheology). The …
investigated under oscillatory shear with Fourier-transform rheology (FT-rheology). The …
Determination of the non-linear parameter (mobility factor) of the Giesekus constitutive model using LAOS procedure
A Calin, M Wilhelm, C Balan - Journal of non-newtonian fluid mechanics, 2010 - Elsevier
The paper introduces a novel procedure to determine the non-linear parameter of the
Giesekus model, in relation to the characterization of the non-linear oscillatory shear regime …
Giesekus model, in relation to the characterization of the non-linear oscillatory shear regime …
Separation of the nonlinear oscillatory response into a superposition of linear, strain hardening, strain softening, and wall slip response
CO Klein, HW Spiess, A Calin, C Balan… - Macromolecules, 2007 - ACS Publications
Water-based dispersions and emulsions are used as model systems for a new rheological
data analysis. The application of large amplitude oscillatory shear can be used to generate a …
data analysis. The application of large amplitude oscillatory shear can be used to generate a …
Analysis of medium amplitude oscillatory shear data of entangled linear and model comb polymers
Studying the mechanical response of nearly monodisperse linear and comb polystyrene
(PS) melts to medium amplitude oscillatory shear (MAOS), Hyun and Wilhelm …
(PS) melts to medium amplitude oscillatory shear (MAOS), Hyun and Wilhelm …
Nonlinear response of dense colloidal suspensions under oscillatory shear: Mode-coupling theory and Fourier transform rheology experiments
JM Brader, M Siebenbürger, M Ballauff… - Physical Review E …, 2010 - APS
Using a combination of theory, experiment, and simulation we investigate the nonlinear
response of dense colloidal suspensions to large amplitude oscillatory shear flow. The time …
response of dense colloidal suspensions to large amplitude oscillatory shear flow. The time …
Microstructure and nonlinear signatures of yielding in a heterogeneous colloidal gel under large amplitude oscillatory shear
J Kim, D Merger, M Wilhelm, ME Helgeson - Journal of Rheology, 2014 - pubs.aip.org
We investigate yielding in a colloidal gel that forms a heterogeneous structure, consisting of
a two-phase bicontinuous network of colloid-rich domains of fractal clusters and colloid-poor …
a two-phase bicontinuous network of colloid-rich domains of fractal clusters and colloid-poor …