On the Vibrational Properties of High-Elastic Gels

概要

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A new method is presented for determining dynamic mechanical properties of high-elastic gels by measuring the amplitude and phase of forced longitudinal vibrations excited in get blocks themselves. It is shown that the Young's modulus and viscosity can be determined by analysing these quantities. Theoretical analyses are also made for the vibrations excited in the vertical cylindrical samples with no viscosity by horizontal oscillations of the bottom ends. The calculated results are illustrated by strains (displacement, inclination and shearing angle) for various values of cylinder diameters and frequencies used. It is shown that an approximate value of rigidity can be obtained from the frequency dependence of the strains. On an basis of this method the dependence of dynamic mechanical constants of agar-agar gels on cylinder diameters, concentrations and frequencies is studied, and reasonable values are obtained.
社団法人応用物理学会の論文
1974-07-05