Measuring and testing – Liquid analysis or analysis of the suspension of solids in a... – Viscosity
Patent
1987-10-05
1989-01-03
Levy, Stewart J.
Measuring and testing
Liquid analysis or analysis of the suspension of solids in a...
Viscosity
73 60, 73841, G01N 1100
Patent
active
047947888
ABSTRACT:
A method and apparatus for testing samples of viscoelastic materials are shown, in which the sample is subjected to a sinusoidal excitation and the response to the excitation is measured. By sampling the response at at least three data points equally spaced through a single cycle of excitation and making the proper calculations based on the data points, the storage modulus or the loss modulus of the materials, or both, can be obtained. The apparatus includes a rotary drive, eccentric, sample holder, a rotor or moving die, a torque transducer, excitation means, response measuring means, data handler and a sampler to obtain responses at predetermined intervals.
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D. M. Danko et al., "An Application of Mini-Computers for the Determination . . ." Test Equipment (?).
Masters Thomas D.
Pawlowski Henry A.
Levy Stewart J.
Monsanto Company
Seward Gordon B.
Williams Hezron E.
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