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Abstract:

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.

Registro:

Documento: Artículo
Título:On the free volume evolution in a deformed epoxy composite. A positron annihilation study
Autor:Goyanes, S.; Rubiolo, G.; Salgueiro, W.; Somoza, A.
Filiación:LPyMC, Departamento de Física, Pabellon i, (1428) Buenos Aires, Argentina
Consejo Nacional de Investigaciones Científicas y Tecnológicas, Argentina
Dep. de Materiales, CNEA, Av. del Libertador 8250, (1424), Buenos Aires, Argentina
IFIMAT-UNCentro, Pinto 399, B7000GHG Tandil, Argentina
Comisión de Investigaciones Científicas de la Provincia de Buenos Aires, Calle 526 entre 10 y 11, 1900 La Plata, Argentina
Palabras clave: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
Año:2005
Volumen:46
Número:21
Página de inicio:9081
Página de fin:9087
DOI: http://dx.doi.org/10.1016/j.polymer.2005.07.020
Título revista:Polymer
Título revista abreviado:Polymer
ISSN:00323861
CODEN:POLMA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00323861_v46_n21_p9081_Goyanes

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Citas:

---------- APA ----------
Goyanes, S., Rubiolo, G., Salgueiro, W. & Somoza, A. (2005) . On the free volume evolution in a deformed epoxy composite. A positron annihilation study. Polymer, 46(21), 9081-9087.
http://dx.doi.org/10.1016/j.polymer.2005.07.020
---------- CHICAGO ----------
Goyanes, S., Rubiolo, G., Salgueiro, W., Somoza, A. "On the free volume evolution in a deformed epoxy composite. A positron annihilation study" . Polymer 46, no. 21 (2005) : 9081-9087.
http://dx.doi.org/10.1016/j.polymer.2005.07.020
---------- MLA ----------
Goyanes, S., Rubiolo, G., Salgueiro, W., Somoza, A. "On the free volume evolution in a deformed epoxy composite. A positron annihilation study" . Polymer, vol. 46, no. 21, 2005, pp. 9081-9087.
http://dx.doi.org/10.1016/j.polymer.2005.07.020
---------- VANCOUVER ----------
Goyanes, S., Rubiolo, G., Salgueiro, W., Somoza, A. On the free volume evolution in a deformed epoxy composite. A positron annihilation study. Polymer. 2005;46(21):9081-9087.
http://dx.doi.org/10.1016/j.polymer.2005.07.020