Physical Principles of Methods for Measuring Viscoelastic Properties

The main methods used to measure viscoelastic properties of materials in a wide range of frequencies from 10 −4 to 10 6 Hz are reviewed. It is demonstrated that the accuracy of many experimental methods can be increased by taking into account the form factors, which depend on the specimen type. An e...

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Bibliographic Details
Published inJournal of applied mechanics and technical physics Vol. 59; no. 5; pp. 874 - 885
Main Authors Kulik, V. M., Boiko, A. V.
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2018
Springer Nature B.V
Subjects
Applications of Mathematics
Classical and Continuum Physics
Classical Mechanics
Deformation
Fluid- and Aerodynamics
Form factors
Material properties
Mathematical Modeling and Industrial Mathematics
Mathematical models
Measurement methods
Mechanical Engineering
Physics
Physics and Astronomy
Poisson's ratio
Propagation velocity
Rubber
Specimen geometry
Two dimensional models
Viscoelasticity
Poisson’s ratio
velocity of propagation of oscillations
loss coefficient
form factor
measurements on living tissues
elasticity and shear moduli
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Summary:The main methods used to measure viscoelastic properties of materials in a wide range of frequencies from 10 −4 to 10 6 Hz are reviewed. It is demonstrated that the accuracy of many experimental methods can be increased by taking into account the form factors, which depend on the specimen type. An example of the form factor for a cylindrical specimen is provided, which is determined numerically on the basis of a two-dimensional deformation model taking into account the specimen geometry and Poisson’s ratio. The importance of the precise determination of Poisson’s ratio for rubber-like and complex-structured materials is demonstrated. Requirements to such measurements and a setup satisfying these requirements are described. Two methods for measuring viscoelastic properties of living tissues (compliance and disturbance propagation velocity) are considered. Based on the developed method of measuring these parameters for materials with a fixed thickness, methods for the creation of a unified standard of measurements of viscoelastic characteristics of living tissues are proposed.
ISSN:0021-8944
1573-8620
DOI:10.1134/S0021894418050152