Measurement methods of complex Poisson's ratio of viscoelastic materials

Research output: Contribution to journalArticle

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Abstract

The methods of measuring the complex Poisson's ratio of viscoelastic materials as a function of frequency are investigated in this paper with special respect to the accuracy of determining the relevant loss factor. The measurement methods are reviewed, evaluated and compared from the point of view accuracy and frequency range. It is shown that some contradictory beliefs on the frequency dependence of dynamic Poisson's ratio and the value of loss factor are due to experimental difficulties. It is pointed out that the measurement of two complex moduli, especially the shear and bulk moduli, may be the most effective method to determine the dynamic Poisson's ratio and loss factor over a wide frequency range. An example for determining the complex Poisson's ratio of a rubber in a wide frequency range is presented.

Original languageEnglish
Pages (from-to)279-292
Number of pages14
JournalApplied Acoustics
Volume60
Issue number3
Publication statusPublished - 2000

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Poisson ratio
frequency ranges
Elastic moduli
bulk modulus
rubber
Rubber
shear

Keywords

  • Complex Poisson's ratio
  • Frequency dependence
  • Measurement
  • Viscoelastic materials

ASJC Scopus subject areas

  • Mechanical Engineering
  • Acoustics and Ultrasonics

Cite this

Measurement methods of complex Poisson's ratio of viscoelastic materials. / Pritz, T.

In: Applied Acoustics, Vol. 60, No. 3, 2000, p. 279-292.

Research output: Contribution to journalArticle

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