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Title of Journal: Rheol Acta

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Abbravation: Rheologica Acta

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Springer-Verlag

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DOI

10.1006/jmva.1998.1795

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1435-1528

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The contribution of frictional contacts to the she

Authors: Adam P Poloski Paul R Bredt Richard C Daniel Avelino Eduardo Saez
Publish Date: 2006/05/23
Volume: 46, Issue: 2, Pages: 249-259
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Abstract

This paper investigates the use of the shear vane technique as a means of determining frictional and cohesive interparticle force contributions to the shear strength of coarse glass bead powders and slurries To this end the shear strength of 203μm glass beads in air and slurried in water and kaolinite suspensions was determined as a function of vane immersion depth vane geometry and container size Both vane immersion depth and container diameter are found to significantly impact the shear strength measured using the vane technique An equation describing interparticle frictional and cohesive contributions to shear vane measurements was derived in an effort to describe the experimental results A Janssen stress distribution model for granular materials forms the basis for this equation and appears to explain the behavior of shear strength measurements at varying immersion depths The presence of the Janssen stress distribution can affect the interpretation of shear vane results Rather than shear strength being a material property as is the case with flocculated colloid slurries and polymer solutions shear strength becomes a process property where vane depth container size and container material can result in significant measurement variations Such parameters should be considered before using the shear vane results on applications involving granular material componentsWe wish to acknowledge the contributions of Amanda Bolta and Nathan Lester through the US Department of Energy DOE Community College Institute CCI The CCI is a DOEfunded student research program for students from community colleges across the nation DOE funding provided to the laboratories covers the costs of student stipends housing allowances and travel reimbursement Pacific Northwest National Laboratory is operated for DOE by Battelle under Contract DEAC0576RL01830


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  1. Effect of morphology on the interfacial slip of immiscible polypropylene/polystyrene blends
  2. Amorphous and crystalline states of ultrasoft colloids: a molecular dynamics study
  3. A hierarchical multi-mode MSF model for long-chain branched polymer melts part II: multiaxial extensional flows
  4. Novel bitumen/isocyanate-based reactive polymer formulations for the paving industry
  5. Can dynamical mechanical measurements predict brittle fracture behaviour?
  6. Self-reinforcement of polymers as a consequence of elongational flow
  7. The role of convective constraint release in parallel superposition flows of nearly monodisperse entangled polymer solutions
  8. Influence of the initial cooling temperature on the gelation and yield stress of waxy crude oils
  9. Molecular architecture and linear viscoelasticity of homogeneous ethylene/styrene copolymers
  10. Flow analysis of the weld line formation during injection mold filling of thermoplastics
  11. Squeeze flow of soft solids between rough surfaces
  12. Molecular orientation in non-Newtonian flow of dilute polymer solutions around spheres
  13. End effects in rotational viscometry II. Pseudoplastic fluids at elevated Reynolds number
  14. Rheological behaviour of a high-melt-strength polypropylene at elevated pressure and gas loading for foaming purposes
  15. The effect of premature wall yield on creep testing of strongly flocculated suspensions
  16. Rheological and morphological properties of PA6/ECO nanocomposites
  17. Orientation distribution in injection molding: a further step toward more accurate simulations
  18. Fractal analysis of viscoelastic data with automated gel point location and its potential application in the investigation of therapeutically modified blood coagulation
  19. Modeling confinement in polymer nanocomposites from linear viscoelasticity data
  20. Linear viscoelasticity of styrenic block copolymers–clay nanocomposites
  21. On exact solutions of the flow equations for Bingham visco-plastic fluids through an eccentric annular cross-section
  22. A computational extensional rheology study of two biofluid systems
  23. Power-law creep and residual stresses in a carbopol gel
  24. Electrorheological response of SnO 2 and Y 2 O 3 nanoparticles in silicon oil
  25. Generation of inkjet droplet of non-Newtonian fluid
  26. Scaling and mesostructure of Carbopol dispersions
  27. Study of the non-isothermal glass fibre drawing process
  28. Influence of molecular parameters on the stress dependence of viscous and elastic properties of polypropylene melts in shear
  29. An error-minimizing approach to inverse Langevin approximations

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