Identification of fatigue crack propagation modes by means of roughness measurements

Detalhes bibliográficos
Autor(a) principal: Antunes, F. V.
Data de Publicação: 2000
Outros Autores: Ramalho, A., Ferreira, J. 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/10316/4300
https://doi.org/10.1016/S0142-1123(00)00048-7
Resumo: This paper is a study of the applicability of fracture surface roughness measurements to identify the crack propagation mode in nickel base superalloys (transgranular, intergranular or mixed). The results obtained indicated that this technique can be used as an alternative or as a complement to standard fractography. The best roughness parameters for identifying the crack propagation mode are average roughness, mean roughness depth and mean height profile peak (Ra, Rz and Rpm). Analysis of roughness spectra in terms of the frequency range showed that the amplitude values of the profiles with wavelengths identical to the grain size are significant when propagation is intergranular. The roughness measurements were used to study the influence of loading frequency and stress state on the fatigue crack propagation mode occurring in Inconel 718 tested at 600°C.
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spelling Identification of fatigue crack propagation modes by means of roughness measurementsCrack propagation modeRoughness parametersHigh-temperature fatigueNickel base superalloysThis paper is a study of the applicability of fracture surface roughness measurements to identify the crack propagation mode in nickel base superalloys (transgranular, intergranular or mixed). The results obtained indicated that this technique can be used as an alternative or as a complement to standard fractography. The best roughness parameters for identifying the crack propagation mode are average roughness, mean roughness depth and mean height profile peak (Ra, Rz and Rpm). Analysis of roughness spectra in terms of the frequency range showed that the amplitude values of the profiles with wavelengths identical to the grain size are significant when propagation is intergranular. The roughness measurements were used to study the influence of loading frequency and stress state on the fatigue crack propagation mode occurring in Inconel 718 tested at 600°C.http://www.sciencedirect.com/science/article/B6V35-41ST109-6/1/4695f61f2b3e59463aa24ef462c9fdc52000info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4300http://hdl.handle.net/10316/4300https://doi.org/10.1016/S0142-1123(00)00048-7engInternational Journal of Fatigue. 22:9 (2000) 781-788Antunes, F. V.Ramalho, A.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:RCAAP2020-11-06T16:59:36Zoai:estudogeral.uc.pt:10316/4300Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:29.781209Repositório 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 Identification of fatigue crack propagation modes by means of roughness measurements
title Identification of fatigue crack propagation modes by means of roughness measurements
spellingShingle Identification of fatigue crack propagation modes by means of roughness measurements
Antunes, F. V.
Crack propagation mode
Roughness parameters
High-temperature fatigue
Nickel base superalloys
title_short Identification of fatigue crack propagation modes by means of roughness measurements
title_full Identification of fatigue crack propagation modes by means of roughness measurements
title_fullStr Identification of fatigue crack propagation modes by means of roughness measurements
title_full_unstemmed Identification of fatigue crack propagation modes by means of roughness measurements
title_sort Identification of fatigue crack propagation modes by means of roughness measurements
author Antunes, F. V.
author_facet Antunes, F. V.
Ramalho, A.
Ferreira, J. M.
author_role author
author2 Ramalho, A.
Ferreira, J. M.
author2_role author
author
dc.contributor.author.fl_str_mv Antunes, F. V.
Ramalho, A.
Ferreira, J. M.
dc.subject.por.fl_str_mv Crack propagation mode
Roughness parameters
High-temperature fatigue
Nickel base superalloys
topic Crack propagation mode
Roughness parameters
High-temperature fatigue
Nickel base superalloys
description This paper is a study of the applicability of fracture surface roughness measurements to identify the crack propagation mode in nickel base superalloys (transgranular, intergranular or mixed). The results obtained indicated that this technique can be used as an alternative or as a complement to standard fractography. The best roughness parameters for identifying the crack propagation mode are average roughness, mean roughness depth and mean height profile peak (Ra, Rz and Rpm). Analysis of roughness spectra in terms of the frequency range showed that the amplitude values of the profiles with wavelengths identical to the grain size are significant when propagation is intergranular. The roughness measurements were used to study the influence of loading frequency and stress state on the fatigue crack propagation mode occurring in Inconel 718 tested at 600°C.
publishDate 2000
dc.date.none.fl_str_mv 2000
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/10316/4300
http://hdl.handle.net/10316/4300
https://doi.org/10.1016/S0142-1123(00)00048-7
url http://hdl.handle.net/10316/4300
https://doi.org/10.1016/S0142-1123(00)00048-7
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv International Journal of Fatigue. 22:9 (2000) 781-788
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)
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instacron_str RCAAP
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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
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