Effect of stress ratio and specimen thickness on fatigue crack growth of CK45 steel

Detalhes bibliográficos
Autor(a) principal: Costa, J. D. M.
Data de Publicação: 1998
Outros Autores: Ferreira, J. A. M.
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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spelling 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
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status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10316/4326
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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
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