Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene

The use of crystal polystyrene for high performance components requires knowledge of the distribution of residual stresses. The aim of this research was to analyze the influence of the molding temperature and cooling time on the residual stresses present in parts of two types of crystal polystyrene...

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Autores:
Acevedo-Morantes, María Teresa
Brieva-Sarmiento, María
Realpe-Jimenez, Alvaro
Tipo de recurso:
Article of journal
Fecha de publicación:
2014
Institución:
Universidad Nacional de Colombia
Repositorio:
Universidad Nacional de Colombia
Idioma:
spa
OAI Identifier:
oai:repositorio.unal.edu.co:unal/51103
Acceso en línea:
https://repositorio.unal.edu.co/handle/unal/51103
http://bdigital.unal.edu.co/45159/
Palabra clave:
Tensiones residuales
poliestireno cristal
fotoelasticidad
polaricospio
Rights
openAccess
License
Atribución-NoComercial 4.0 Internacional
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repository_id_str
dc.title.spa.fl_str_mv Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
title Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
spellingShingle Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
Tensiones residuales
poliestireno cristal
fotoelasticidad
polaricospio
title_short Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
title_full Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
title_fullStr Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
title_full_unstemmed Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
title_sort Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene
dc.creator.fl_str_mv Acevedo-Morantes, María Teresa
Brieva-Sarmiento, María
Realpe-Jimenez, Alvaro
dc.contributor.author.spa.fl_str_mv Acevedo-Morantes, María Teresa
Brieva-Sarmiento, María
Realpe-Jimenez, Alvaro
dc.subject.proposal.spa.fl_str_mv Tensiones residuales
poliestireno cristal
fotoelasticidad
polaricospio
topic Tensiones residuales
poliestireno cristal
fotoelasticidad
polaricospio
description The use of crystal polystyrene for high performance components requires knowledge of the distribution of residual stresses. The aim of this research was to analyze the influence of the molding temperature and cooling time on the residual stresses present in parts of two types of crystal polystyrene PS1 and PS2, processed by injection molding. The results obtained using photoelasticity showed that at low temperatures the residual stresses increase due to the processes of formation and destruction of intermolecular forces. Internal stresses were reduced in the polymer specimens with greater thickness because the molecular relaxation of chains of polystyrene is facilitated by the space increase between the walls of the mold. It was concluded that the photoelasticity technique can be applied effectively in the measurement of residual stresses in injection molded crystal polystyrene parts.
publishDate 2014
dc.date.issued.spa.fl_str_mv 2014-10-23
dc.date.accessioned.spa.fl_str_mv 2019-06-29T11:22:15Z
dc.date.available.spa.fl_str_mv 2019-06-29T11:22:15Z
dc.type.spa.fl_str_mv Artículo de revista
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url https://repositorio.unal.edu.co/handle/unal/51103
http://bdigital.unal.edu.co/45159/
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dc.relation.spa.fl_str_mv http://revistas.unal.edu.co/index.php/dyna/article/view/40142
dc.relation.ispartof.spa.fl_str_mv Universidad Nacional de Colombia Revistas electrónicas UN Dyna
Dyna
dc.relation.ispartofseries.none.fl_str_mv DYNA; Vol. 81, núm. 187 (2014); 73-80 Dyna; Vol. 81, núm. 187 (2014); 73-80 2346-2183 0012-7353
dc.relation.references.spa.fl_str_mv Acevedo-Morantes, María Teresa and Brieva-Sarmiento, María and Realpe-Jimenez, Alvaro (2014) Effect of the molding temperature and cooling time on the residual stresses of crystal polystyrene. DYNA; Vol. 81, núm. 187 (2014); 73-80 Dyna; Vol. 81, núm. 187 (2014); 73-80 2346-2183 0012-7353 .
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