Rheometer for determining extensional elasticity

Details Rheometer for determining extensional elasticity Rheometer for determining extensional elasticity

1993-10-14

1995-10-10

Williams, Hezron E.

Measuring and testing

Liquid analysis or analysis of the suspension of solids in a...

Viscosity

73 5413, 73 5431, G01N 1100, G01N 1104

Patent

active

054561051

ABSTRACT:
A method determining the extensional elasticity of a fluid includes the step of determining the shear viscosity of a fluid in a flow field where the shear rate of the fluid is substantially uniform. A valve indicative of the shear viscosity and extensional elasticity is obtained by performing measurements in a flow field where a portion of the body of the fluid is accelerated. The two values are then compared to obtain an indicator of the extensional elasticity.

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