Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive

Detalhes bibliográficos
Autor(a) principal: I. M. Foletti, Andrea
Data de Publicação: 2020
Outros Autores: Sena-Cruz, José, Vassilopoulos, Anastasios P.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: https://hdl.handle.net/1822/68154
Resumo: This paper investigates the effects of degassing, curing and post-curing conditions on the tensile quasi-static and fatigue behavior of a cold-curing structural epoxy adhesive. Quasi-static experiments performed at standardized and high displacement rates similar to those imposed to the material under fatigue loading, in order to derive comparable results from both loadings, and tensile-tensile fatigue tests at a fixed stress ratio, were carried out. Digital image correlation, video extensometer, thermal camera, digital camera and microscope were used to record the evolution of the strain and temperature, and assess the damage evolution during and after loading. The results shown that degassing can improve the material behavior when curing at ambient temperatures, since it assist the removal of several small voids from the bulk adhesive. However, when curing the material at high temperatures, immediately after mixing, the degassing does not offer any advantage, and the material’s long-term performance decreases.
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spelling Fabrication and curing conditions effects on the fatigue behavior of a structural adhesiveFatigueCompositesAdhesivesCuringDegassingEngenharia e Tecnologia::Engenharia CivilScience & TechnologyThis paper investigates the effects of degassing, curing and post-curing conditions on the tensile quasi-static and fatigue behavior of a cold-curing structural epoxy adhesive. Quasi-static experiments performed at standardized and high displacement rates similar to those imposed to the material under fatigue loading, in order to derive comparable results from both loadings, and tensile-tensile fatigue tests at a fixed stress ratio, were carried out. Digital image correlation, video extensometer, thermal camera, digital camera and microscope were used to record the evolution of the strain and temperature, and assess the damage evolution during and after loading. The results shown that degassing can improve the material behavior when curing at ambient temperatures, since it assist the removal of several small voids from the bulk adhesive. However, when curing the material at high temperatures, immediately after mixing, the degassing does not offer any advantage, and the material’s long-term performance decreases.SFRH/BSAB/150266/2019; Sika. Experimental platform (GIC-ENAC at the Ecole Polytechnique Fédérale de Lausanne (EPFL), Switzerland) for the use of testing equipment, and the support of Sika AG, Zurich that provided the epoxy material. The second author wishes also to acknowledge the grant SFRH/BSAB/150266/2019, provided by Fundação para a Ciência e a Tecnologia, IP (FCT), financed by European Social Fund and by national funds through the FCT/MCTES.Elsevier B.V.Universidade do MinhoI. M. Foletti, AndreaSena-Cruz, JoséVassilopoulos, Anastasios P.2020-102020-10-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://hdl.handle.net/1822/68154engFoletti, A.I.M.; Sena-Cruz, J.; Vassilopoulos, A.P. (2020) “Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive” International Journal of Fatigue, 139: 105743 1-150142-112310.1016/j.ijfatigue.2020.105743https://www.sciencedirect.com/science/article/pii/S0142112320302747info: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:RCAAP2023-10-07T01:21:29Zoai:repositorium.sdum.uminho.pt:1822/68154Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:22:12.951212Repositório 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 Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
title Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
spellingShingle Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
I. M. Foletti, Andrea
Fatigue
Composites
Adhesives
Curing
Degassing
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
title_short Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
title_full Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
title_fullStr Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
title_full_unstemmed Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
title_sort Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive
author I. M. Foletti, Andrea
author_facet I. M. Foletti, Andrea
Sena-Cruz, José
Vassilopoulos, Anastasios P.
author_role author
author2 Sena-Cruz, José
Vassilopoulos, Anastasios P.
author2_role author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv I. M. Foletti, Andrea
Sena-Cruz, José
Vassilopoulos, Anastasios P.
dc.subject.por.fl_str_mv Fatigue
Composites
Adhesives
Curing
Degassing
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
topic Fatigue
Composites
Adhesives
Curing
Degassing
Engenharia e Tecnologia::Engenharia Civil
Science & Technology
description This paper investigates the effects of degassing, curing and post-curing conditions on the tensile quasi-static and fatigue behavior of a cold-curing structural epoxy adhesive. Quasi-static experiments performed at standardized and high displacement rates similar to those imposed to the material under fatigue loading, in order to derive comparable results from both loadings, and tensile-tensile fatigue tests at a fixed stress ratio, were carried out. Digital image correlation, video extensometer, thermal camera, digital camera and microscope were used to record the evolution of the strain and temperature, and assess the damage evolution during and after loading. The results shown that degassing can improve the material behavior when curing at ambient temperatures, since it assist the removal of several small voids from the bulk adhesive. However, when curing the material at high temperatures, immediately after mixing, the degassing does not offer any advantage, and the material’s long-term performance decreases.
publishDate 2020
dc.date.none.fl_str_mv 2020-10
2020-10-01T00:00:00Z
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 https://hdl.handle.net/1822/68154
url https://hdl.handle.net/1822/68154
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Foletti, A.I.M.; Sena-Cruz, J.; Vassilopoulos, A.P. (2020) “Fabrication and curing conditions effects on the fatigue behavior of a structural adhesive” International Journal of Fatigue, 139: 105743 1-15
0142-1123
10.1016/j.ijfatigue.2020.105743
https://www.sciencedirect.com/science/article/pii/S0142112320302747
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv Elsevier B.V.
publisher.none.fl_str_mv Elsevier B.V.
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_ 1799132692351025152

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