Ultrafast ultrasonic imaging coupled to rheometry: principle and illustration
arXiv:1301.6957 · doi:10.1063/1.4801462
Abstract
We describe a technique coupling standard rheology and ultrasonic imaging with promising applications to characterization of soft materials under shear. Plane wave imaging using an ultrafast scanner allows to follow the local dynamics of fluids sheared between two concentric cylinders with frame rates as high as 10,000 images per second, while simultaneously monitoring the shear rate, shear stress, and viscosity as a function of time. The capacities of this "rheo-ultrasound" instrument are illustrated on two examples: (i) the classical case of the Taylor-Couette instability in a simple viscous fluid and (ii) the unstable shear-banded flow of a non-Newtonian wormlike micellar solution.
14 pages, 9 pages, submitted to the Review of Scientific Instruments
References in corpus (7)
- Rheology of giant micelles
- Recent experimental probes of shear banding
- Spatio-temporal dynamics of wormlike micelles under shear
- Shear-induced transitions and instabilities in surfactant wormlike micelles
- Ultrafast ultrasonic imaging coupled to rheometry: principle and illustration
- Influence of boundary conditions on yielding in a soft glassy material
- Shear-induced fractures and three-dimensional motions in an organogel
Cited by in corpus (22)
- Yield Stress Materials in Soft Condensed Matter
- Timescales in creep and yielding of attractive gels
- Creep and Fracture of a Protein Gel under Stress
- Ultrafast ultrasonic imaging coupled to rheometry: principle and illustration
- Simultaneous rheo-electric measurements of strongly conductive complex fluids
- Time dependence in large amplitude oscillatory shear: a rheo-ultrasonic study of fatigue dynamics in a colloidal gel
- Avalanche-like fluidization of a non-Brownian particle gel
- Multiple yielding processes in a colloidal gel under large amplitude oscillatory stress
- Time-Resolved Mechanical Spectroscopy of Soft Materials via Optimally Windowed Chirps
- Uncovering instabilities in the spatiotemporal dynamics of a shear-thickening cornstarch suspension
- A theoretical framework for steady-state rheometry in generic flow conditions
- Microscopic precursors of failure in soft matter
- A stress-controlled shear cell for small-angle light scattering and microscopy
- Irreversible hardening of a colloidal gel under shear: the smart response of natural rubber latex gels
- Local Oscillatory Rheology from Echography
- Surfactant micelles: model systems for flow instabilities of complex fluids
- Inertio-elastic instability of non shear-banding wormlike micelles
- Shear-induced structures versus flow instabilities
- Simultaneous concentration and velocity maps in particle suspensions under shear from rheo-ultrasonic imaging
- Nonlinear mechanics of colloidal gels: creep, fatigue and shear-induced yielding
- Interplay between wall slip and shear banding in a thixotropic yield stress fluid
- Dynamic jamming of dense suspensions under tilted impact