Rheometry (from the Greek word rheos meaning stream) generically refers to the experimental techniques used to determine the rheological properties of materials, that is the quantitative and qualitative relationships between
deformations and stresses and their derivatives.
The choice of the adequate experimental technique depends on the rheological property which has to be determined. This can be the steady shear
viscosity, the linear viscoelasticproperties (complex viscosity respectively elastic modulus), the elongational properties, etc...
For all real materials, the measured property will be a function of the flow conditions during which it is being measured (
shear rate, frequency, etc...) even if for some materials this dependence is vanishingly low under given conditions (see Newtonian fluids).
Rheometry is a specific concern for
smart fluids such as magnetorheological fluids and electrorheological fluids, as it is the primary method to quantify the useful properties of these materials.
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Rheometry — Rhe*om e*try, n. 1. The measurement of the force or intensity of currents. [1913 Webster] 2. (Math.) The calculus; fluxions. [R.] [1913 Webster] … The Collaborative International Dictionary of English
rheometry — noun a) The measurement of electrical current b) The measurement of rheological properties of materials, especially by the use of a rheometer … Wiktionary
rheometry — Measurement of electrical current or blood flow … Medical dictionary
RHEOMETRY — measurement of the force or the velocity of an electric current … The Nuttall Encyclopaedia
rheometry — n. measurement of the velocity of a fluid current; measurement of the force of an electrical current … English contemporary dictionary
rheometry — rhe·om·e·try … English syllables
rheometry — noun see rheometer … Useful english dictionary
Rheology — is the study of the flow of matter: mainly liquids but also soft solids or solids under conditions in which they flow rather than deform elasticallyW. R. Schowalter (1978) Mechanics of Non Newtonian Fluids Pergamon ISBN 0 08021778 8] . It applies … Wikipedia
Magnetorheological fluid — Continuum mechanics … Wikipedia
Rheometer — Today, a rheometer is a laboratory device used to measure the way in which a liquid, suspension or slurry flows in response to applied forces. It is used for those fluids which cannot be defined by a single value of viscosity and therefore… … Wikipedia