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Homogeneous Deformation with Direct Measurement of Pressure

Homogeneous Deformation with Direct Measurement of Pressure [Pg.169]

Diagram of method of McKinney, Edelman, and Marvin for measuring dynamic bulk viscoelastic properties. [Pg.170]

The frequency ranges of the two devices described above are such that they measure primarily isothermal and adiabatic moduli respectively (Chapter 5) and the difference between the two will be larger for bulk compression than for any other type of deformation. For a soft polymeric solid with a = 6 X 10 deg and Kis = 3 X 10 0 dynes/cm, Kad would be higher than Kjs by about 20% (Chapter 5, equation 41). [Pg.170]



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Deformation measurement

Direct measure

Direct measurement

Directly measured

Measurements with

Measuring pressure

Pressure deformation

Pressure measurements

With pressure

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