oSIST prEN ISO 3219-1:2020

SLOVENSKI STANDARD
oSIST prEN ISO 3219-1:2020
01-april-2020

Reologija - 1. del: Splošni izrazi in definicije za rotacijsko in oscilacijsko reometrijo

Rheology - Part 1: General terms and definitions for rotational and oscillatory rheometry

Rheologie - Teil 1: Allgemeine Begriffe der Rotations- und Oszillationsrheometrie

Rhéologie Partie 1: Termes généraux et définitions pour la rhéométrie rotative et

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

Partie 1: Termes et définitions générales pour rhéométrie rotational et oscillatoire

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Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 Symbols and units ............................................................................................................................................................................................... 8

(informative) Alphabetical index .........................................................................................................................................................................10

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This document was prepared by Technical Committee ISO/TC 35, Paints and varnishes, Subcommittee

SC 9, Generaltest methods for paints and varnishes, in cooperation with ISO/TC 61, Plastics, Subcommittee

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This document specifies general terms and definitions that are used in the context of rotational and

Other terms and definitions can be found in the other parts of the standards series where they are used.

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ratio of the amplitude of the shear stress τ and the amplitude of the shear strain γ

Note 1 to entry: The absolute value of the complex shear modulus |G*| has the unit pascal (Pa).

ratio of the amount of the complex shear modulus |G*| and the angular frequency ω

Note 1 to entry: The absolute value of the complex shear viscosity |η*| has the unit pascal multiplied by

Note 1 to entry: The angular frequency has the unit radians per second (rad⋅s ), which is the SI unit, or reciprocal

Note 1 to entry: The angular velocity Ω has the unit radians per second (rad⋅s ), the angular displacement Φ has

Note 2 to entry: The angular velocity Ω, in radians per second (rad⋅s ), is linked to rotational speed n, in reciprocal

type of test where the specified variable from the initial value to the final value varies monotonously

Note 1 to entry: The continuous ramp is performed by linear or logarithmic presetting.

graphical representation of the relation between shear stress τ and shear rate γ

Note 1 to entry: The frequency f has the unit hertz (Hz), where: 1 Hz is 1 oscillation per second.

Note 2 to entry: The frequency f, in hertz (Hz), is linked to the angular frequency ω via the following relation:

property of a material to show an immediate, fully reversible recovery after deformation

Note 1 to entry: The dynamic viscosity η‘ has the unit pascal multiplied by seconds (Pa⋅s).

Note 1 to entry: The kinematic viscosity υ has the unit square metres per second (m ⋅s ).

Note 1 to entry: All calculations of rheological parameters for absolute measuring geometries (see ISO 3219-2)

point on the curve τ(γ) or γ(τ), above which the ratio of shear stress τ and shear strain γ is not anymore

Note 1 to entry: The linearity limit is given as shear stress τ with the unit pascal (Pa) and as shear strain γ with

phase shift between shear stress τ and shear strain γ at a harmonic steady-state excitation

behaviour where the shear viscosityη is independent of shear rate γ , shear stress τ and time t