Mixed-mode fatigue crack growth behaviour in aluminium alloy
Autor(a) principal: | |
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Data de Publicação: | 2006 |
Outros Autores: | , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | http://hdl.handle.net/10316/4228 https://doi.org/10.1016/j.ijfatigue.2005.07.047 |
Resumo: | Fatigue crack propagation tests in compact mixed-mode specimens were carried out for several stress intensity ratios of mode I and mode II, KI/KII, in AlMgSi1-T6 aluminium alloy with 3 mm thickness. The tests were performed in a standard servo-hydraulic machine. A linkage system was developed in order to permit the variation of the KI/KII ratio by changing the loading angle. Crack closure loads were obtained through the compliance technique. A finite element analysis was also done in order to obtain the KI and KII values for the different loading angles. Crack closure increases under mixed-mode loading conditions in comparison to mode-I loading due the friction between the crack tip surfaces. Moreover, the crack closure level increases with the KI/KII ratio decrease. Correlations of the equivalent values of the effective stress intensity factor with the crack growth rates are also performed. Finally, an elastic-plastic finite element analysis was performed to obtain the plastic zones sizes and shapes and model the effect of mixed-mode loading on crack closure. |
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Mixed-mode fatigue crack growth behaviour in aluminium alloyAluminium alloyMixed-mode loadingFatigue crack propagationCrack closureFatigue crack propagation tests in compact mixed-mode specimens were carried out for several stress intensity ratios of mode I and mode II, KI/KII, in AlMgSi1-T6 aluminium alloy with 3 mm thickness. The tests were performed in a standard servo-hydraulic machine. A linkage system was developed in order to permit the variation of the KI/KII ratio by changing the loading angle. Crack closure loads were obtained through the compliance technique. A finite element analysis was also done in order to obtain the KI and KII values for the different loading angles. Crack closure increases under mixed-mode loading conditions in comparison to mode-I loading due the friction between the crack tip surfaces. Moreover, the crack closure level increases with the KI/KII ratio decrease. Correlations of the equivalent values of the effective stress intensity factor with the crack growth rates are also performed. Finally, an elastic-plastic finite element analysis was performed to obtain the plastic zones sizes and shapes and model the effect of mixed-mode loading on crack closure.http://www.sciencedirect.com/science/article/B6V35-4HTCTR7-4/1/5c13c025a6dddc4a05eba614cf4759dc2006info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4228http://hdl.handle.net/10316/4228https://doi.org/10.1016/j.ijfatigue.2005.07.047engInternational Journal of Fatigue. 28:5-6 (2006) 618-626Borrego, L. P.Antunes, F. V.Costa, J. M.Ferreira, J. M.info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2020-11-06T16:49:07Zoai:estudogeral.uc.pt:10316/4228Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:26.793240Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse |
dc.title.none.fl_str_mv |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
title |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
spellingShingle |
Mixed-mode fatigue crack growth behaviour in aluminium alloy Borrego, L. P. Aluminium alloy Mixed-mode loading Fatigue crack propagation Crack closure |
title_short |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
title_full |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
title_fullStr |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
title_full_unstemmed |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
title_sort |
Mixed-mode fatigue crack growth behaviour in aluminium alloy |
author |
Borrego, L. P. |
author_facet |
Borrego, L. P. Antunes, F. V. Costa, J. M. Ferreira, J. M. |
author_role |
author |
author2 |
Antunes, F. V. Costa, J. M. Ferreira, J. M. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Borrego, L. P. Antunes, F. V. Costa, J. M. Ferreira, J. M. |
dc.subject.por.fl_str_mv |
Aluminium alloy Mixed-mode loading Fatigue crack propagation Crack closure |
topic |
Aluminium alloy Mixed-mode loading Fatigue crack propagation Crack closure |
description |
Fatigue crack propagation tests in compact mixed-mode specimens were carried out for several stress intensity ratios of mode I and mode II, KI/KII, in AlMgSi1-T6 aluminium alloy with 3 mm thickness. The tests were performed in a standard servo-hydraulic machine. A linkage system was developed in order to permit the variation of the KI/KII ratio by changing the loading angle. Crack closure loads were obtained through the compliance technique. A finite element analysis was also done in order to obtain the KI and KII values for the different loading angles. Crack closure increases under mixed-mode loading conditions in comparison to mode-I loading due the friction between the crack tip surfaces. Moreover, the crack closure level increases with the KI/KII ratio decrease. Correlations of the equivalent values of the effective stress intensity factor with the crack growth rates are also performed. Finally, an elastic-plastic finite element analysis was performed to obtain the plastic zones sizes and shapes and model the effect of mixed-mode loading on crack closure. |
publishDate |
2006 |
dc.date.none.fl_str_mv |
2006 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://hdl.handle.net/10316/4228 http://hdl.handle.net/10316/4228 https://doi.org/10.1016/j.ijfatigue.2005.07.047 |
url |
http://hdl.handle.net/10316/4228 https://doi.org/10.1016/j.ijfatigue.2005.07.047 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
International Journal of Fatigue. 28:5-6 (2006) 618-626 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
aplication/PDF |
dc.source.none.fl_str_mv |
reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação instacron:RCAAP |
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Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
RCAAP |
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RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
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Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
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