Dynamic Viscoelastic Functions

Domain to the Time Domain and Vice Versa for Viscoelastic Solids 

10 Zero Shear Rate Viscosity and Steady-State Compliance Expressed 252 in Terms of Viscoelastic Functions 

The transient experiments to which we referred in the preceding chapter provide information on the linear viscoelastic behavior of materials in the 

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FIG. 13.59 Accuracy of interrelationships between static and dynamic viscoelastic functions. 

Viscoelasticity D W AUBREY Transient and dynamic viscoelastic functions Boltzmann superposition principle... 

Thus, the dynamic viscoelastic functions are obtained from following equations by measuring the torque, Mq, and the phase angle, S. 

In practice, the Markovitz equation [5] is often used to calculate the dynamic viscoelastic functions for the rotational rheometers ... 

A parallel-plate rheometer is sometimes used to determine linear viscoelastic properties of polymer liquids by oscillating one plate with a small angular amplitude or small strain amplitude. By measuring the torque amplitude, Mq, <5, and the dynamic viscoelastic functions are obtained by Eq. (48)-(52). In this case, the geometric constant A is given by... 

An unusually complete tabulation of numerical data for both transient and dynamic viscoelastic functions for a cross-linked polyurethane rubber has been presented by Schwarzl, van der Wal, and Bree. ... 

The dynamic viscoelastic functions for anisotropic materials may be obtained simply be expressing the various components in equations (18) and (19) in complex form, i.e. 

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