Titlebook: Rheological Measurement; A. A. Collyer (Formerly senior lecturer in Divisio Book 1998Latest edition Springer Science+Business Media Dordre

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Rotational viscometry speed. The shear rate is defined to be the plate velocity . divided by the gap spacing .. Of the six components of the symmetric stress tensor, four are non-zero [1–4], with σ. and σ. being zero. We assume the materials under consideration are incompressible.

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Normal stress differences from hole pressure measurementsssmeter gives reliable data up to a shear stress σ = 130 kPa and shear rate γ = 2200 . and that the high shear rate stressmeter gives reliable data up to σ = 15kPa and γ = 10.s.. An ultra high shear rate viscometer gives a constant viscosity for decalin up to γ = 5 × 10.s.. Viscous heating errors are small, and are corrected by a new algorithm.

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nd edition, fully revised and updated to include newtechniques is invaluable to polymer and materials scientists,engineers and technologists, and anyone else making rheologicalmeasurements on materials whether they be polymeric, biological,slurries, food or other complex fluids.978-94-010-6070-7978-94-011-4934-1

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onent of the cost of producing value added with labour productivity constituting a major determinant of labour costs; moreover, wage negotiations between unions and employers usually contain, as an important subplot, negotiations about improvements in the productivity of the labour force.