Optical coherence tomography velocimetry combined with a rheometer and optical modulation techniques provides increased sensitivity to the low shear rate motion of complex fluid systems. Optical modulation coupled with a new interferometer design yields improved signal to noise ratios and is demonstrated with optically opaque colloidal suspensions. Thus the measurable range of shear velocities ...

In this contribution the influence of an extrusion process on the viscosity function of rubber blends is identified. This knowledge is required for performance of realistic numerical simulations of injection heads and extrusion tools for rubber profile production. The experimental basis of this investigation are tests with both, capillary and extrusion rheometer. The latter is a combination of ...

We investigate the rheological properties of microliter quantities of the spinning material extracted ex vivo from the major ampullate gland of a Nephila clavipes spider using two new micro-rheometric devices. A sliding plate micro-rheometer is employed to measure the steady-state shear viscosity of approximately 1 microl samples of silk dope from individual biological specimens. The steady she...

Abstract The durability, fatigue resistance, and low-temperature behavior of asphalt layers are greatly affected by the properties bitumen. Therefore, composition bitumen is frequently modified to improve performance mixtures. Sty-rene-butadiene-styrene (SBS) has been most often used additive recently. Researchers trying cohesive adhesive binders such polymer-based additives. In this study, 160...

A new pressure sensor array, positioned on the bottom plate of a standard torsional rheometer, is presented. It built from unique piezo-capacitive polymeric foam and consists 25 capacitive sensors (of surface 4.5 × mm 2 each) together in 5 regular array. The array used to obtain mapping normal stresses complex fluids, which dramatically extends capability rheometer. We demonstrate this with thr...