04754640 is referenced by 21 patents and cites 11 patents.

A rheometer for determining the viscoelasticity of a liquid from the mechanical impedance which the liquid presents to an oscillating surface. The incremental power required to maintain a fixed amplitude of oscillation of the surface upon immersion in the liquid is determined. The differential shift in oscillation frequency due to immersion in the liquid is also determined. By relating (i) the incremental oscillation power to mechanical resistance presented by the liquid to the oscillating surface, and (ii) the differential shift in a oscillation frequency to the mechanical reactance presented by the liquid to the oscillating surface, the viscoelasticity of the liquid is determined. Applications include laboratory measurements and process control.

Title
Apparatus and method for determining the viscoelasticity of liquids
Application Number
7/26869
Publication Number
4754640
Application Date
March 17, 1987
Publication Date
July 5, 1988
Inventor
John L Schrag
Madison
WI, US
Donald W Nelson
Voorhees
NJ, US
Frank J Matusik
Piscataway
NJ, US
J Vincent Fitzgerald
Metuchen
NJ, US
Agent
Arthur L Lessler
Assignee
National Metal and Refining Company
NJ, US
IPC
G01N 11/16
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