Delamination effects on cracked steel members reinforced by prestressed composite patch

Detalhes bibliográficos
Autor(a) principal: Colombi, P.
Data de Publicação: 2002
Outros Autores: Bassetti, A., Nussbaumer, A.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10316/10756
https://doi.org/10.1016/S0167-8442(02)00138-6
Resumo: Prestressed composite patch bonded on cracked steel section is a promising technique to reinforce cracked details or to prevent fatigue cracking on steel structural elements. It introduces compressive stresses that produce crack closure effect. Moreover, it modifies the crack geometry by bridging the crack lips and reduces the stress range at crack tip. Fatigue tests were performed on notched steel plate reinforced by CFRP strips as a step toward the validation of crack patching for fatigue life extension of riveted steel bridges. A debond crack in the adhesive–plate interface was observed by optical technique. Debond crack total strain energy release rate is computed by the modified virtual crack closure technique. A parametric analysis is performed in order to investigate the influence of some design parameters such as the composite patch Young’s modulus, the adhesive thickness and the pretension level on the adhesive–plate interface debond.
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spelling Delamination effects on cracked steel members reinforced by prestressed composite patchComposite patch reinforcementDebond crackStrain energy release ratePrestressed composite patch bonded on cracked steel section is a promising technique to reinforce cracked details or to prevent fatigue cracking on steel structural elements. It introduces compressive stresses that produce crack closure effect. Moreover, it modifies the crack geometry by bridging the crack lips and reduces the stress range at crack tip. Fatigue tests were performed on notched steel plate reinforced by CFRP strips as a step toward the validation of crack patching for fatigue life extension of riveted steel bridges. A debond crack in the adhesive–plate interface was observed by optical technique. Debond crack total strain energy release rate is computed by the modified virtual crack closure technique. A parametric analysis is performed in order to investigate the influence of some design parameters such as the composite patch Young’s modulus, the adhesive thickness and the pretension level on the adhesive–plate interface debond.Elsevier Science2002-11-19info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articlehttp://hdl.handle.net/10316/10756http://hdl.handle.net/10316/10756https://doi.org/10.1016/S0167-8442(02)00138-6engTheoretical and Applied Fracture Mechanics. 39:1 (2003) 61-710167-8442Colombi, P.Bassetti, A.Nussbaumer, A.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:RCAAP2020-05-29T10:04:57Zoai:estudogeral.uc.pt:10316/10756Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T20:57:13.698723Repositório 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 Delamination effects on cracked steel members reinforced by prestressed composite patch
title Delamination effects on cracked steel members reinforced by prestressed composite patch
spellingShingle Delamination effects on cracked steel members reinforced by prestressed composite patch
Colombi, P.
Composite patch reinforcement
Debond crack
Strain energy release rate
title_short Delamination effects on cracked steel members reinforced by prestressed composite patch
title_full Delamination effects on cracked steel members reinforced by prestressed composite patch
title_fullStr Delamination effects on cracked steel members reinforced by prestressed composite patch
title_full_unstemmed Delamination effects on cracked steel members reinforced by prestressed composite patch
title_sort Delamination effects on cracked steel members reinforced by prestressed composite patch
author Colombi, P.
author_facet Colombi, P.
Bassetti, A.
Nussbaumer, A.
author_role author
author2 Bassetti, A.
Nussbaumer, A.
author2_role author
author
dc.contributor.author.fl_str_mv Colombi, P.
Bassetti, A.
Nussbaumer, A.
dc.subject.por.fl_str_mv Composite patch reinforcement
Debond crack
Strain energy release rate
topic Composite patch reinforcement
Debond crack
Strain energy release rate
description Prestressed composite patch bonded on cracked steel section is a promising technique to reinforce cracked details or to prevent fatigue cracking on steel structural elements. It introduces compressive stresses that produce crack closure effect. Moreover, it modifies the crack geometry by bridging the crack lips and reduces the stress range at crack tip. Fatigue tests were performed on notched steel plate reinforced by CFRP strips as a step toward the validation of crack patching for fatigue life extension of riveted steel bridges. A debond crack in the adhesive–plate interface was observed by optical technique. Debond crack total strain energy release rate is computed by the modified virtual crack closure technique. A parametric analysis is performed in order to investigate the influence of some design parameters such as the composite patch Young’s modulus, the adhesive thickness and the pretension level on the adhesive–plate interface debond.
publishDate 2002
dc.date.none.fl_str_mv 2002-11-19
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/10316/10756
http://hdl.handle.net/10316/10756
https://doi.org/10.1016/S0167-8442(02)00138-6
url http://hdl.handle.net/10316/10756
https://doi.org/10.1016/S0167-8442(02)00138-6
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Theoretical and Applied Fracture Mechanics. 39:1 (2003) 61-71
0167-8442
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Elsevier Science
publisher.none.fl_str_mv Elsevier Science
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
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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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