On the free volume evolution in a deformed epoxy composite. A positron annihilation study

After fabrication of an epoxy system filled with aluminum powder, followed by inelastic deformations under compression of the specimens, Positron Annihilation Lifetime Spectroscopy (PALS) was used to follow the evolution of the free-volume holes in the matrix. In order to describe the micromechanica...

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Autores principales: Goyanes, S., Rubiolo, G., Salgueiro, W., Somoza, A.
Formato: JOUR
Materias:
Epoxy resin
Free volume
Plastic deformation
Aluminum
Composite materials
Deformation
Matrix algebra
Positron annihilation spectroscopy
Powders
Deviatoric part
Fabrication process
Epoxy resins
polymer science
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_00323861_v46_n21_p9081_Goyanes
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_00323861_v46_n21_p9081_Goyanes
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spelling todo:paper_00323861_v46_n21_p9081_Goyanes2023-10-03T14:45:12Z On the free volume evolution in a deformed epoxy composite. A positron annihilation study Goyanes, S. Rubiolo, G. Salgueiro, W. Somoza, A. Epoxy resin Free volume Plastic deformation Aluminum Composite materials Deformation Matrix algebra Plastic deformation Positron annihilation spectroscopy Powders Deviatoric part Fabrication process Free volume Epoxy resins polymer science After fabrication of an epoxy system filled with aluminum powder, followed by inelastic deformations under compression of the specimens, Positron Annihilation Lifetime Spectroscopy (PALS) was used to follow the evolution of the free-volume holes in the matrix. In order to describe the micromechanical deformation mechanism that takes place in the matrix around the inclusions, the experimental free-volume holes data were analyzed in terms of a model specifically developed. This model involves a hydrostatic internal stress resulting from the fabrication process of the composites and the deviatoric part of the applied stress during inelastic deformation. The influence of both kinds of stresses on the modification of the free-volume sizes in the matrix is discussed. © 2005 Elsevier Ltd. All rights reserved. Fil:Goyanes, S. 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_00323861_v46_n21_p9081_Goyanes
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic Epoxy resin
Free volume
Plastic deformation
Aluminum
Composite materials
Deformation
Matrix algebra
Plastic deformation
Positron annihilation spectroscopy
Powders
Deviatoric part
Fabrication process
Free volume
Epoxy resins
polymer science
spellingShingle Epoxy resin
Free volume
Plastic deformation
Aluminum
Composite materials
Deformation
Matrix algebra
Plastic deformation
Positron annihilation spectroscopy
Powders
Deviatoric part
Fabrication process
Free volume
Epoxy resins
polymer science
Goyanes, S.
Rubiolo, G.
Salgueiro, W.
Somoza, A.
On the free volume evolution in a deformed epoxy composite. A positron annihilation study
topic_facet Epoxy resin
Free volume
Plastic deformation
Aluminum
Composite materials
Deformation
Matrix algebra
Plastic deformation
Positron annihilation spectroscopy
Powders
Deviatoric part
Fabrication process
Free volume
Epoxy resins
polymer science
description After fabrication of an epoxy system filled with aluminum powder, followed by inelastic deformations under compression of the specimens, Positron Annihilation Lifetime Spectroscopy (PALS) was used to follow the evolution of the free-volume holes in the matrix. In order to describe the micromechanical deformation mechanism that takes place in the matrix around the inclusions, the experimental free-volume holes data were analyzed in terms of a model specifically developed. This model involves a hydrostatic internal stress resulting from the fabrication process of the composites and the deviatoric part of the applied stress during inelastic deformation. The influence of both kinds of stresses on the modification of the free-volume sizes in the matrix is discussed. © 2005 Elsevier Ltd. All rights reserved.
format JOUR
author Goyanes, S.
Rubiolo, G.
Salgueiro, W.
Somoza, A.
author_facet Goyanes, S.
Rubiolo, G.
Salgueiro, W.
Somoza, A.
author_sort Goyanes, S.
title On the free volume evolution in a deformed epoxy composite. A positron annihilation study
title_short On the free volume evolution in a deformed epoxy composite. A positron annihilation study
title_full On the free volume evolution in a deformed epoxy composite. A positron annihilation study
title_fullStr On the free volume evolution in a deformed epoxy composite. A positron annihilation study
title_full_unstemmed On the free volume evolution in a deformed epoxy composite. A positron annihilation study
title_sort on the free volume evolution in a deformed epoxy composite. a positron annihilation study
url http://hdl.handle.net/20.500.12110/paper_00323861_v46_n21_p9081_Goyanes
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AT rubiolog onthefreevolumeevolutioninadeformedepoxycompositeapositronannihilationstudy
AT salgueirow onthefreevolumeevolutioninadeformedepoxycompositeapositronannihilationstudy
AT somozaa onthefreevolumeevolutioninadeformedepoxycompositeapositronannihilationstudy
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