High shear rate viscometry

  title={High shear rate viscometry},
  author={Christopher J. Pipe and Trushant S. Majmudar and Gareth H. McKinley},
  journal={Rheologica Acta},
We investigate the use of two distinct and complementary approaches in measuring the viscometric properties of low viscosity complex fluids at high shear rates up to 80,000 s−1. Firstly, we adapt commercial controlled-stress and controlled-rate rheometers to access elevated shear rates by using parallel-plate fixtures with very small gap settings (down to 30 μm). The resulting apparent viscosities are gap dependent and systematically in error, but the data can be corrected—at least for… 
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