Amplitude dependent damping in vinyl polymers

The damping behaviour of several vinyl polymers-poly(methyl methacrylate) (PMMA), poly(vinyl chloride) (PVC), polystyrene (PS) and impact polystyrene (PSi)-was studied both as a funtion of temperature and strain amplitude. The measurements were performed from room temperature up to the glass transit...

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Autores principales: Povolo, F., Goyanes, S.N.
Formato: JOUR
Materias:
Damping
Internal friction
Mechanical testing
Polymethyl methacrylates
Polystyrenes
Polyvinyl chlorides
Strain rate
Stress relaxation
Stresses
Temperature
Activation volume
Impact polystyrene
Strain amplitude
Vinyl polymer
Vinyl resins
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_11554339_v6_n8_pC8_Povolo
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_11554339_v6_n8_pC8_Povolo
record_format dspace
spelling todo:paper_11554339_v6_n8_pC8_Povolo2023-10-03T16:08:08Z Amplitude dependent damping in vinyl polymers Povolo, F. Goyanes, S.N. Damping Internal friction Mechanical testing Polymethyl methacrylates Polystyrenes Polyvinyl chlorides Strain rate Stress relaxation Stresses Temperature Activation volume Impact polystyrene Strain amplitude Vinyl polymer Vinyl resins The damping behaviour of several vinyl polymers-poly(methyl methacrylate) (PMMA), poly(vinyl chloride) (PVC), polystyrene (PS) and impact polystyrene (PSi)-was studied both as a funtion of temperature and strain amplitude. The measurements were performed from room temperature up to the glass transition temperature and shows amplitude dependence at frequencies of the order 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 and stress relaxation). It is suggested that the nonlinear effects are related to the a relaxation in these materials, since the activation enthalpy is quite similar to the one obtained from the maxima of this relaxation. Fil:Povolo, F. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Goyanes, S.N. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_11554339_v6_n8_pC8_Povolo
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Damping
Internal friction
Mechanical testing
Polymethyl methacrylates
Polystyrenes
Polyvinyl chlorides
Strain rate
Stress relaxation
Stresses
Temperature
Activation volume
Impact polystyrene
Strain amplitude
Vinyl polymer
Vinyl resins
spellingShingle Damping
Internal friction
Mechanical testing
Polymethyl methacrylates
Polystyrenes
Polyvinyl chlorides
Strain rate
Stress relaxation
Stresses
Temperature
Activation volume
Impact polystyrene
Strain amplitude
Vinyl polymer
Vinyl resins
Povolo, F.
Goyanes, S.N.
Amplitude dependent damping in vinyl polymers
topic_facet Damping
Internal friction
Mechanical testing
Polymethyl methacrylates
Polystyrenes
Polyvinyl chlorides
Strain rate
Stress relaxation
Stresses
Temperature
Activation volume
Impact polystyrene
Strain amplitude
Vinyl polymer
Vinyl resins
description The damping behaviour of several vinyl polymers-poly(methyl methacrylate) (PMMA), poly(vinyl chloride) (PVC), polystyrene (PS) and impact polystyrene (PSi)-was studied both as a funtion of temperature and strain amplitude. The measurements were performed from room temperature up to the glass transition temperature and shows amplitude dependence at frequencies of the order 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 and stress relaxation). It is suggested that the nonlinear effects are related to the a relaxation in these materials, since the activation enthalpy is quite similar to the one obtained from the maxima of this relaxation.
format JOUR
author Povolo, F.
Goyanes, S.N.
author_facet Povolo, F.
Goyanes, S.N.
author_sort Povolo, F.
title Amplitude dependent damping in vinyl polymers
title_short Amplitude dependent damping in vinyl polymers
title_full Amplitude dependent damping in vinyl polymers
title_fullStr Amplitude dependent damping in vinyl polymers
title_full_unstemmed Amplitude dependent damping in vinyl polymers
title_sort amplitude dependent damping in vinyl polymers
url http://hdl.handle.net/20.500.12110/paper_11554339_v6_n8_pC8_Povolo
work_keys_str_mv AT povolof amplitudedependentdampinginvinylpolymers
AT goyanessn amplitudedependentdampinginvinylpolymers
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