Nonlinear mechanical spectrometry of poly(methyl methacrylate)

Data on the damping spectra of commercial poly(methyl methacrylate) (PMMA) are reported, both at low (of the order of 1 Hz) and at intermediate (of the order of 50 Hz) frequencies. It is shown that the damping does not only depend strongly on temperature and frequencies. It is shown that the damping...

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Detalles Bibliográficos
Autores principales: Povolo, F., Lambri, O.A.
Formato: JOUR
Materias:
Aging of materials
Damping
Frequencies
Numerical methods
Spectrometry
Strain
Thermal effects
Nonlinear mechanical spectrometry
Nonlinearity
Ree-Eyring equation
Strain amplitude
Polymethyl methacrylates
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00218995_v56_n2_p161_Povolo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
Descripción
Sumario:Data on the damping spectra of commercial poly(methyl methacrylate) (PMMA) are reported, both at low (of the order of 1 Hz) and at intermediate (of the order of 50 Hz) frequencies. It is shown that the damping does not only depend strongly on temperature and frequencies. It is shown that the damping does not only depend strongly on temperature and frequency but also on the strain amplitude applied to the specimen. In other words, the dynamic mechanical behavior of PMMA is nonlinear and cannot be described in terms of linear viscoelasticity. Finally, some aging effects in the damping, measured at low frequencies, are also reported. © 1995 John Wiley & Sons, Inc. Copyright © 1995 John Wiley & Sons, Inc.

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