Determination of Paris law constants with a reverse engineering technique
Autor(a) principal: | |
---|---|
Data de Publicação: | 2008 |
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/10316/4190 https://doi.org/10.1016/j.engfailanal.2008.02.004 |
Resumo: | Paris law constants are commonly obtained with a well established procedure based on standard specimens, notched and pre-cracked. Pre-cracking produces through cracks with stable shapes, nearly straight, similar during all propagation. However, in several situations specimens with corner and surface cracks are recommended. In these cases cracks having significant propagation will continuously modify their shape, beginning with corner or surface geometries and subsequently transforming into through cracks, resulting into a transition region with significant crack shape modification. The aim of this paper is to determine Paris law constants from the analysis of crack shapes on the surface of fracture, in regions of intense shape modification. A double-U specimen of a new generation nickel base superalloy was used to obtain experimental crack shapes within transitory region as well as the number of load cycles between them. An automatic crack growth technique based on the finite element method (FEM) was employed to obtain fatigue constants from crack propagation data. |
id |
RCAP_a4585171abd64a01871075001e8371fb |
---|---|
oai_identifier_str |
oai:estudogeral.uc.pt:10316/4190 |
network_acronym_str |
RCAP |
network_name_str |
Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
repository_id_str |
7160 |
spelling |
Determination of Paris law constants with a reverse engineering techniqueParis law constantsDouble-U specimenCrack shape evolutionReverse engineeringParis law constants are commonly obtained with a well established procedure based on standard specimens, notched and pre-cracked. Pre-cracking produces through cracks with stable shapes, nearly straight, similar during all propagation. However, in several situations specimens with corner and surface cracks are recommended. In these cases cracks having significant propagation will continuously modify their shape, beginning with corner or surface geometries and subsequently transforming into through cracks, resulting into a transition region with significant crack shape modification. The aim of this paper is to determine Paris law constants from the analysis of crack shapes on the surface of fracture, in regions of intense shape modification. A double-U specimen of a new generation nickel base superalloy was used to obtain experimental crack shapes within transitory region as well as the number of load cycles between them. An automatic crack growth technique based on the finite element method (FEM) was employed to obtain fatigue constants from crack propagation data.http://www.sciencedirect.com/science/article/B6V2X-4RY8SW7-2/1/b964943d50ecbe648212dc11150b1a042008-09-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleaplication/PDFhttp://hdl.handle.net/10316/4190http://hdl.handle.net/10316/4190https://doi.org/10.1016/j.engfailanal.2008.02.004engEngineering Failure Analysis. In Press, Corrected Proof:Branco, R.Antunes, F. V.Martins Ferreira, J. A.Silva, 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:RCAAP2020-11-06T16:49:02Zoai:estudogeral.uc.pt:10316/4190Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:58:34.916218Repositório 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 |
Determination of Paris law constants with a reverse engineering technique |
title |
Determination of Paris law constants with a reverse engineering technique |
spellingShingle |
Determination of Paris law constants with a reverse engineering technique Branco, R. Paris law constants Double-U specimen Crack shape evolution Reverse engineering |
title_short |
Determination of Paris law constants with a reverse engineering technique |
title_full |
Determination of Paris law constants with a reverse engineering technique |
title_fullStr |
Determination of Paris law constants with a reverse engineering technique |
title_full_unstemmed |
Determination of Paris law constants with a reverse engineering technique |
title_sort |
Determination of Paris law constants with a reverse engineering technique |
author |
Branco, R. |
author_facet |
Branco, R. Antunes, F. V. Martins Ferreira, J. A. Silva, J. M. |
author_role |
author |
author2 |
Antunes, F. V. Martins Ferreira, J. A. Silva, J. M. |
author2_role |
author author author |
dc.contributor.author.fl_str_mv |
Branco, R. Antunes, F. V. Martins Ferreira, J. A. Silva, J. M. |
dc.subject.por.fl_str_mv |
Paris law constants Double-U specimen Crack shape evolution Reverse engineering |
topic |
Paris law constants Double-U specimen Crack shape evolution Reverse engineering |
description |
Paris law constants are commonly obtained with a well established procedure based on standard specimens, notched and pre-cracked. Pre-cracking produces through cracks with stable shapes, nearly straight, similar during all propagation. However, in several situations specimens with corner and surface cracks are recommended. In these cases cracks having significant propagation will continuously modify their shape, beginning with corner or surface geometries and subsequently transforming into through cracks, resulting into a transition region with significant crack shape modification. The aim of this paper is to determine Paris law constants from the analysis of crack shapes on the surface of fracture, in regions of intense shape modification. A double-U specimen of a new generation nickel base superalloy was used to obtain experimental crack shapes within transitory region as well as the number of load cycles between them. An automatic crack growth technique based on the finite element method (FEM) was employed to obtain fatigue constants from crack propagation data. |
publishDate |
2008 |
dc.date.none.fl_str_mv |
2008-09-01 |
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/10316/4190 http://hdl.handle.net/10316/4190 https://doi.org/10.1016/j.engfailanal.2008.02.004 |
url |
http://hdl.handle.net/10316/4190 https://doi.org/10.1016/j.engfailanal.2008.02.004 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Engineering Failure Analysis. In Press, Corrected Proof: |
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 |
instname_str |
Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação |
instacron_str |
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 |
|
_version_ |
1799133877545992192 |