The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments

Detalhes bibliográficos
Autor(a) principal: Rosenberg,Zvi
Data de Publicação: 2010
Outros Autores: Ashuach,Yechezkel, Kreif,Rafael
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Matéria (Rio de Janeiro. Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762010000200028
Resumo: The issue of adiabatic shearing is discussed in this work and a new interpretation is given to some failure phenomena which are usually termed as adiabatic shears. We propose that only a few materials undergo a truly inherent failure which is due to thermal softening at the shearing zone and that the interplay between microvoids, cracks and narrow shear bands should be taken into account through the temperature rise at the front of advancing cracks. Also, the size of the plastic zone ahead of a crack plays an important role in determining the brittleness of a given specimen and should be taken into account when specimens of different sizes are tested. Experimental results for several alloys in the Kolsky bar system support our approach.
id RLAM-1_41405085a61dd41d1b9b8ffd765fcdb0
oai_identifier_str oai:scielo:S1517-70762010000200028
network_acronym_str RLAM-1
network_name_str Matéria (Rio de Janeiro. Online)
repository_id_str
spelling The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experimentsKolsky barSHPBadiabatic shear bandingThe issue of adiabatic shearing is discussed in this work and a new interpretation is given to some failure phenomena which are usually termed as adiabatic shears. We propose that only a few materials undergo a truly inherent failure which is due to thermal softening at the shearing zone and that the interplay between microvoids, cracks and narrow shear bands should be taken into account through the temperature rise at the front of advancing cracks. Also, the size of the plastic zone ahead of a crack plays an important role in determining the brittleness of a given specimen and should be taken into account when specimens of different sizes are tested. Experimental results for several alloys in the Kolsky bar system support our approach.Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiroem cooperação com a Associação Brasileira do Hidrogênio, ABH22010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762010000200028Matéria (Rio de Janeiro) v.15 n.2 2010reponame:Matéria (Rio de Janeiro. Online)instname:Matéria (Rio de Janeiro. Online)instacron:RLAM10.1590/S1517-70762010000200028info:eu-repo/semantics/openAccessRosenberg,ZviAshuach,YechezkelKreif,Rafaeleng2010-08-27T00:00:00Zoai:scielo:S1517-70762010000200028Revistahttp://www.materia.coppe.ufrj.br/https://old.scielo.br/oai/scielo-oai.php||materia@labh2.coppe.ufrj.br1517-70761517-7076opendoar:2010-08-27T00:00Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)false
dc.title.none.fl_str_mv The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
title The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
spellingShingle The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
Rosenberg,Zvi
Kolsky bar
SHPB
adiabatic shear banding
title_short The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
title_full The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
title_fullStr The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
title_full_unstemmed The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
title_sort The effect of specimen dimensions on the propensity to adiabatic shear failure in Kolsky bar experiments
author Rosenberg,Zvi
author_facet Rosenberg,Zvi
Ashuach,Yechezkel
Kreif,Rafael
author_role author
author2 Ashuach,Yechezkel
Kreif,Rafael
author2_role author
author
dc.contributor.author.fl_str_mv Rosenberg,Zvi
Ashuach,Yechezkel
Kreif,Rafael
dc.subject.por.fl_str_mv Kolsky bar
SHPB
adiabatic shear banding
topic Kolsky bar
SHPB
adiabatic shear banding
description The issue of adiabatic shearing is discussed in this work and a new interpretation is given to some failure phenomena which are usually termed as adiabatic shears. We propose that only a few materials undergo a truly inherent failure which is due to thermal softening at the shearing zone and that the interplay between microvoids, cracks and narrow shear bands should be taken into account through the temperature rise at the front of advancing cracks. Also, the size of the plastic zone ahead of a crack plays an important role in determining the brittleness of a given specimen and should be taken into account when specimens of different sizes are tested. Experimental results for several alloys in the Kolsky bar system support our approach.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762010000200028
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1517-70762010000200028
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S1517-70762010000200028
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
publisher.none.fl_str_mv Laboratório de Hidrogênio, Coppe - Universidade Federal do Rio de Janeiro
em cooperação com a Associação Brasileira do Hidrogênio, ABH2
dc.source.none.fl_str_mv Matéria (Rio de Janeiro) v.15 n.2 2010
reponame:Matéria (Rio de Janeiro. Online)
instname:Matéria (Rio de Janeiro. Online)
instacron:RLAM
instname_str Matéria (Rio de Janeiro. Online)
instacron_str RLAM
institution RLAM
reponame_str Matéria (Rio de Janeiro. Online)
collection Matéria (Rio de Janeiro. Online)
repository.name.fl_str_mv Matéria (Rio de Janeiro. Online) - Matéria (Rio de Janeiro. Online)
repository.mail.fl_str_mv ||materia@labh2.coppe.ufrj.br
_version_ 1752126687624036352

Registros relacionados