Artículo
Non-linear viscoelasticity and two-step yielding in magnetorheology: a colloidal gel approach to understand the effect of particle concentration
Fecha de publicación:
08/2012
Editorial:
Journal Rheology Amer Inst Physics
Revista:
Journal Of Rheology
ISSN:
0148-6055
Idioma:
Inglés
Tipo de recurso:
Artículo publicado
Clasificación temática:
Resumen
The yielding behavior of conventional magnetorheological (MR) fluids is revisited for a wide range of magnetic fields and particle concentrations under a colloidal gel perspective. A two-step yielding behavior is found at intermediate magnetic fields (~10 kA/m) that can be explained as a transition from a strong-link to a weak-link (or transition) regime upon increasing the particle concentration in the MR fluid. This two-step yielding behavior is reminiscent of the classical concepts of static (frictional) and dynamic (Bingham) yield stress. By relating macroscopic elastic properties to a scaling fractal model, we could identify the prevalent gelation regime in MR fluids. VC 2012 The Society of Rheology
Palabras clave:
Magnetorheology
,
Physical Gels
,
Colloids
,
Fractals
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Colecciones
Articulos(INTEC)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Articulos de INST.DE DES.TECNOL.PARA LA IND.QUIMICA (I)
Citación
Segovia Gutiérrez, J. P.; Berli, Claudio Luis Alberto; de Vicente, J.; Non-linear viscoelasticity and two-step yielding in magnetorheology: a colloidal gel approach to understand the effect of particle concentration; Journal Rheology Amer Inst Physics; Journal Of Rheology; 56; 6; 8-2012; 1429-1448
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