Measurement of viscoelastic properties

Details Measurement of viscoelastic properties Measurement of viscoelastic properties

1978-04-06

1979-05-15

Ruehl, Charles A.

Measuring and testing

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

Viscosity

G01N 1116

Patent

active

041540930

ABSTRACT:
A method and apparatus for measuring the viscoelastic characteristics of a sample of a viscous liquid or gel contained within a closed can or other cylindrical vessel. The can and sample are subjected to torsional oscillation about a vertical axis by an oscillation source through an elastic coupling member, the oscillation source operating either (i) at a fixed, predetermined frequency or (ii) at the resonant frequency of the can and sample. Measurements are made of the amplitude of oscillation of the can and sample and of either (i) the angular phase difference between the oscillation of the can and sample and those of the source or (ii) the resonant frequency of the can and sample. The measured data may be used either to compare the sample with a standard material or to calculate viscoelastic moduli of the sample.

REFERENCES:
patent: 3181348 (1965-05-01), Lewis

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