Model physically associating gels deformed in shear over a wide range of reduced rates displayed evidence of strain localization. The nonlinear stress responses and inhomogeneous velocity profiles observed during shear rheometry coupled with particle tracking velocimetry were associated with the occurrence of rate-dependent banding and fracture-like responses in the gel. Scaling law analysis fr...

The compression molding process of carbon fiber sheet compounds (CF-SMC) is characterized by a squeeze flow the material. There are no standardized measurement methods to characterize behavior CF-SMC and conventional shear-flow dominated plastics processing not suitable describe elongational deformation mode during molding. objective this work was develop methodology determine rheological prope...

We propose a practical map representation termed rheology mapping for comprehensively evaluating the dependence of viscoelasticity on applied shear deformation and timescale represented by oscillation frequency, utilizing ultrasonic spinning rheometry, which has excellent applicability to wide variety polymer solutions. The was two typical kinds One is carboxymethyl cellulose (CMC) aqueous solu...

The piezoelectric shear gauge (PSG) [Christensen and Olsen, Rev. Sci. Instrum. 66, 5019 (1995)] is a rheometric technique developed to measure the complex modulus of viscous liquids near their glass transition temperature. We report recent advances PSG technique: (1) data extraction procedure optimized, which extends upper limit frequency range method between 50 70 kHz. (2) measuring cell simpl...