Amplitude-dependent dynamical behavior of PVC

Results of the amplitude-dependent dynamical behavior of commercial poly(vinyl chloride) are presented. Both the loss factor (internal friction) and the storage Young's modulus are strain amplitude dependent when measured between room temperature and approximately 400 K at a frequency of 50 kHz...

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Detalles Bibliográficos
Autores principales: Povolo, F., Goyanes, S.N.
Formato: JOUR
Materias:
Dynamics
Elastic moduli
Internal friction
Mechanical testing
Mechanical variables measurement
Relaxation processes
Strain
Strain rate
Stresses
Thermal effects
Activation volume
Amplitude dependent dynamical behavior
Effective stress
Hyperbolic sine stress dependence
Loss factor
Storage Young modulus
Strain amplitude dependence
Polyvinyl chlorides
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00218995_v61_n2_p359_Povolo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Results of the amplitude-dependent dynamical behavior of commercial poly(vinyl chloride) are presented. Both the loss factor (internal friction) and the storage Young's modulus are strain amplitude dependent when measured between room temperature and approximately 400 K at a frequency of 50 kHz. The data are interpreted in terms of a hyperbolic sine stress dependence of the strain rate, including an effective stress. The activation volume was found to depend on temperature, with values much larger than those given by the usual mechanical tests (tensile, creep, or stress relaxation). It is suggested that these nonlinear effects are related to the a relaxation. © 1996 John Wiley & Sons, Inc.

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