##### Curve – Shear Stress v/s Velocity Gradient

- Elastic Solid Fluid
- Thixotropic Fluid (n<1, B=/=0)
- Ideal Plastic Fluid (n=1, B=/=0)
- Rheopectic/ Rheological Fluid (n>1, B=/=0)
- Pseudo Plastic Fluid (n>1, B=0)
- Newtonian Fluid (n=1, B=0)
- Dilatant Fluid (n<1, B=0)
- Ideal Fluid

When B=0,

- n=1 Newtonian fluid, Viscosity invariant of shear stress (air, water, gasoline)
- n>1 Shear thickening Fluid/ Pseudo Plastic Fluid, Viscosity increases with increase in deformation (paint, blood, paper pulp, mud slurry)
- n<1 Shear Thinning/ Dilatant Fluid, Viscosity decreases with increase in shear stress (butter, starch, concentrated sugar solution, suspended sand solution)

When B=/=0,

- n=1 Ideal Bingham Fluid/ Ideal Plastic Fluid (tooth paste, drilling mud)
- n>1 Rheological Fluid, Viscosity increases with increase in shear stress
- n<1 Thixotropic Fluid, Viscosity decreases with increase in shear stress (printer’s ink)