The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer

Autores
Santarelli, Edgardo Luis; Frontini, Patricia Maria
Año de publicación
2007
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The results of an experimental test program performed to investigate the influenceof specimen dimensions and testing rate conditions on room temperature fracturetoughness of PP homopolymer are presented. The material displayed nonlinearload-displacement behavior and exhibited small amounts of slow crack growth(ductile tearing) prior to cleavage instability, which invalidates the direct applicationof the current standards for the determination of KIC in polymers. Data points wereconsiderably scattered consistently with typical ductile-brittle transition patterns.The resulting load-displacement diagrams were analyzed in terms of KQ, KMAX, andthe ratio PMAX/PQ. The fracture toughness at instability, JC, was also computed andplotted against the amount of stable crack growth in order to construct J-R curvesas a function of size and strain rate. From these curves an alternative critical fractureparameter, KJIC, was calculated. Weibull statistics were used as a tentative approachfor treating the scatter of fracture toughness of polypropylene homopolymerin large samples, which exhibited restricted ductile tearing. The significance of eachof these methods and the validity and size independence of the corresponding parametersare discussed.
Fil: Santarelli, Edgardo Luis. Universidad Nacional del Comahue; Argentina
Fil: Frontini, Patricia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
Materia
Weakest Link Model
Polypropylene
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/35603
Acceder
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oai_identifier_str oai:ri.conicet.gov.ar:11336/35603
network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymerSantarelli, Edgardo LuisFrontini, Patricia MariaWeakest Link ModelPolypropylenehttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1https://purl.org/becyt/ford/2.5https://purl.org/becyt/ford/2The results of an experimental test program performed to investigate the influenceof specimen dimensions and testing rate conditions on room temperature fracturetoughness of PP homopolymer are presented. The material displayed nonlinearload-displacement behavior and exhibited small amounts of slow crack growth(ductile tearing) prior to cleavage instability, which invalidates the direct applicationof the current standards for the determination of KIC in polymers. Data points wereconsiderably scattered consistently with typical ductile-brittle transition patterns.The resulting load-displacement diagrams were analyzed in terms of KQ, KMAX, andthe ratio PMAX/PQ. The fracture toughness at instability, JC, was also computed andplotted against the amount of stable crack growth in order to construct J-R curvesas a function of size and strain rate. From these curves an alternative critical fractureparameter, KJIC, was calculated. Weibull statistics were used as a tentative approachfor treating the scatter of fracture toughness of polypropylene homopolymerin large samples, which exhibited restricted ductile tearing. The significance of eachof these methods and the validity and size independence of the corresponding parametersare discussed.Fil: Santarelli, Edgardo Luis. Universidad Nacional del Comahue; ArgentinaFil: Frontini, Patricia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; ArgentinaJohn Wiley & Sons Inc2007-04-07info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/35603Santarelli, Edgardo Luis; Frontini, Patricia Maria; The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer; John Wiley & Sons Inc; Polymer Engineering and Science; 41; 10; 07-4-2007; 1803-18140032-3888CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pen.10877/pdfinfo:eu-repo/semantics/altIdentifier/doi/10.1002/pen.10877info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-15T15:01:51Zoai:ri.conicet.gov.ar:11336/35603instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-15 15:01:51.348CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
title The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
spellingShingle The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
Santarelli, Edgardo Luis
Weakest Link Model
Polypropylene
title_short The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
title_full The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
title_fullStr The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
title_full_unstemmed The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
title_sort The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer
dc.creator.none.fl_str_mv Santarelli, Edgardo Luis
Frontini, Patricia Maria
author Santarelli, Edgardo Luis
author_facet Santarelli, Edgardo Luis
Frontini, Patricia Maria
author_role author
author2 Frontini, Patricia Maria
author2_role author
dc.subject.none.fl_str_mv Weakest Link Model
Polypropylene
topic Weakest Link Model
Polypropylene
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
https://purl.org/becyt/ford/2.5
https://purl.org/becyt/ford/2
dc.description.none.fl_txt_mv The results of an experimental test program performed to investigate the influenceof specimen dimensions and testing rate conditions on room temperature fracturetoughness of PP homopolymer are presented. The material displayed nonlinearload-displacement behavior and exhibited small amounts of slow crack growth(ductile tearing) prior to cleavage instability, which invalidates the direct applicationof the current standards for the determination of KIC in polymers. Data points wereconsiderably scattered consistently with typical ductile-brittle transition patterns.The resulting load-displacement diagrams were analyzed in terms of KQ, KMAX, andthe ratio PMAX/PQ. The fracture toughness at instability, JC, was also computed andplotted against the amount of stable crack growth in order to construct J-R curvesas a function of size and strain rate. From these curves an alternative critical fractureparameter, KJIC, was calculated. Weibull statistics were used as a tentative approachfor treating the scatter of fracture toughness of polypropylene homopolymerin large samples, which exhibited restricted ductile tearing. The significance of eachof these methods and the validity and size independence of the corresponding parametersare discussed.
Fil: Santarelli, Edgardo Luis. Universidad Nacional del Comahue; Argentina
Fil: Frontini, Patricia Maria. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Mar del Plata. Instituto de Investigaciones en Ciencia y Tecnología de Materiales. Universidad Nacional de Mar del Plata. Facultad de Ingeniería. Instituto de Investigaciones en Ciencia y Tecnología de Materiales; Argentina
description The results of an experimental test program performed to investigate the influenceof specimen dimensions and testing rate conditions on room temperature fracturetoughness of PP homopolymer are presented. The material displayed nonlinearload-displacement behavior and exhibited small amounts of slow crack growth(ductile tearing) prior to cleavage instability, which invalidates the direct applicationof the current standards for the determination of KIC in polymers. Data points wereconsiderably scattered consistently with typical ductile-brittle transition patterns.The resulting load-displacement diagrams were analyzed in terms of KQ, KMAX, andthe ratio PMAX/PQ. The fracture toughness at instability, JC, was also computed andplotted against the amount of stable crack growth in order to construct J-R curvesas a function of size and strain rate. From these curves an alternative critical fractureparameter, KJIC, was calculated. Weibull statistics were used as a tentative approachfor treating the scatter of fracture toughness of polypropylene homopolymerin large samples, which exhibited restricted ductile tearing. The significance of eachof these methods and the validity and size independence of the corresponding parametersare discussed.
publishDate 2007
dc.date.none.fl_str_mv 2007-04-07
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/35603
Santarelli, Edgardo Luis; Frontini, Patricia Maria; The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer; John Wiley & Sons Inc; Polymer Engineering and Science; 41; 10; 07-4-2007; 1803-1814
0032-3888
CONICET Digital
CONICET
url http://hdl.handle.net/11336/35603
identifier_str_mv Santarelli, Edgardo Luis; Frontini, Patricia Maria; The effects of specimen size and testing conditions on fracture toughness evaluation of polypropylene homopolymer; John Wiley & Sons Inc; Polymer Engineering and Science; 41; 10; 07-4-2007; 1803-1814
0032-3888
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://onlinelibrary.wiley.com/doi/10.1002/pen.10877/pdf
info:eu-repo/semantics/altIdentifier/doi/10.1002/pen.10877
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv John Wiley & Sons Inc
publisher.none.fl_str_mv John Wiley & Sons Inc
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
_version_ 1846083159758733312
score 13.22299

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