Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel
Autor(a) principal: | |
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Data de Publicação: | 1998 |
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/10316/4326 |
Resumo: | Presented are the effect of stress ratio and thickness on the fatigue crack growth rate of CK45 steel according to DIN 17200. Test results are obtained for constant amplitude load in tension with three stress ratios of R=0, 0.2 and 0.4 and three specimen thicknesses of B=6, 12 and 24 mm. Microgauge crack opening values were used to calculate [Delta]Keff values from which the da/dN - [Delta]Keff curves are obtained. Crack closure can be applied to explain the influence of mean stress and specimen thickness on the fatigue crack growth rate in the second regime of the two-parameter crack growth rate relation. An empirical model is chosen for calculating the normalized load ratio parameter U as a function of R, B and [Delta]K and, for correlating the test data. |
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Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steelPresented are the effect of stress ratio and thickness on the fatigue crack growth rate of CK45 steel according to DIN 17200. Test results are obtained for constant amplitude load in tension with three stress ratios of R=0, 0.2 and 0.4 and three specimen thicknesses of B=6, 12 and 24 mm. Microgauge crack opening values were used to calculate [Delta]Keff values from which the da/dN - [Delta]Keff curves are obtained. Crack closure can be applied to explain the influence of mean stress and specimen thickness on the fatigue crack growth rate in the second regime of the two-parameter crack growth rate relation. An empirical model is chosen for calculating the normalized load ratio parameter U as a function of R, B and [Delta]K and, for correlating the test data.http://www.sciencedirect.com/science/article/B6V55-3V8TRRM-7/1/30b355cbece80979b41af9ced44b57ad1998info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4326http://hdl.handle.net/10316/4326engTheoretical and Applied Fracture Mechanics. 30:1 (1998) 65-73Costa, J. D. M.Ferreira, J. A. 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:RCAAP2020-05-25T12:28:59Zoai:estudogeral.uc.pt:10316/4326Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:30.860821Repositório 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 |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
title |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
spellingShingle |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel Costa, J. D. M. |
title_short |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
title_full |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
title_fullStr |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
title_full_unstemmed |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
title_sort |
Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel |
author |
Costa, J. D. M. |
author_facet |
Costa, J. D. M. Ferreira, J. A. M. |
author_role |
author |
author2 |
Ferreira, J. A. M. |
author2_role |
author |
dc.contributor.author.fl_str_mv |
Costa, J. D. M. Ferreira, J. A. M. |
description |
Presented are the effect of stress ratio and thickness on the fatigue crack growth rate of CK45 steel according to DIN 17200. Test results are obtained for constant amplitude load in tension with three stress ratios of R=0, 0.2 and 0.4 and three specimen thicknesses of B=6, 12 and 24 mm. Microgauge crack opening values were used to calculate [Delta]Keff values from which the da/dN - [Delta]Keff curves are obtained. Crack closure can be applied to explain the influence of mean stress and specimen thickness on the fatigue crack growth rate in the second regime of the two-parameter crack growth rate relation. An empirical model is chosen for calculating the normalized load ratio parameter U as a function of R, B and [Delta]K and, for correlating the test data. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998 |
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/10316/4326 http://hdl.handle.net/10316/4326 |
url |
http://hdl.handle.net/10316/4326 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Theoretical and Applied Fracture Mechanics. 30:1 (1998) 65-73 |
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 |
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RCAAP |
institution |
RCAAP |
reponame_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
collection |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository.name.fl_str_mv |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
repository.mail.fl_str_mv |
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1799133876333838336 |