Creep or relaxation master curves calculated from experimental dynamic viscoelastic function
Autor(a) principal: | |
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Data de Publicação: | 1998 |
Outros Autores: | , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) |
Texto Completo: | https://repositorio-aberto.up.pt/handle/10216/78088 |
Resumo: | The problem treated consists in obtaining the unknown creep or relaxation master curves from experimental dynamic viscoelastic functions obtained on a DMTA analyser. In the present work, a general discrete model, the generalised Kelvin model or the generalised Maxwell model, is used to fit the complex compliance or the complex modulus, respectively. A linear regression technique is applied to the measured data in an iterative calculation, varying the relaxation or the retardation times to obtain the minimum of the relative error. For a physical meaning the admissible solutions do not include negative relaxation or retardation times. The method may be used to obtain an approximation of the discrete relaxation or retardation spectra from dynamic experimental data The error within this procedure is discussed. |
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Creep or relaxation master curves calculated from experimental dynamic viscoelastic functionEngenharia mecânica, Engenharia dos materiaisMechanical engineering, Materials engineeringThe problem treated consists in obtaining the unknown creep or relaxation master curves from experimental dynamic viscoelastic functions obtained on a DMTA analyser. In the present work, a general discrete model, the generalised Kelvin model or the generalised Maxwell model, is used to fit the complex compliance or the complex modulus, respectively. A linear regression technique is applied to the measured data in an iterative calculation, varying the relaxation or the retardation times to obtain the minimum of the relative error. For a physical meaning the admissible solutions do not include negative relaxation or retardation times. The method may be used to obtain an approximation of the discrete relaxation or retardation spectra from dynamic experimental data The error within this procedure is discussed.19981998-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttps://repositorio-aberto.up.pt/handle/10216/78088eng0334-181XRui Miranda GuedesAntónio Torres MarquesAlbert Cardoninfo: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:RCAAP2023-11-29T13:16:10Zoai:repositorio-aberto.up.pt:10216/78088Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T23:37:06.421753Repositório 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 |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
title |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
spellingShingle |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function Rui Miranda Guedes Engenharia mecânica, Engenharia dos materiais Mechanical engineering, Materials engineering |
title_short |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
title_full |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
title_fullStr |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
title_full_unstemmed |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
title_sort |
Creep or relaxation master curves calculated from experimental dynamic viscoelastic function |
author |
Rui Miranda Guedes |
author_facet |
Rui Miranda Guedes António Torres Marques Albert Cardon |
author_role |
author |
author2 |
António Torres Marques Albert Cardon |
author2_role |
author author |
dc.contributor.author.fl_str_mv |
Rui Miranda Guedes António Torres Marques Albert Cardon |
dc.subject.por.fl_str_mv |
Engenharia mecânica, Engenharia dos materiais Mechanical engineering, Materials engineering |
topic |
Engenharia mecânica, Engenharia dos materiais Mechanical engineering, Materials engineering |
description |
The problem treated consists in obtaining the unknown creep or relaxation master curves from experimental dynamic viscoelastic functions obtained on a DMTA analyser. In the present work, a general discrete model, the generalised Kelvin model or the generalised Maxwell model, is used to fit the complex compliance or the complex modulus, respectively. A linear regression technique is applied to the measured data in an iterative calculation, varying the relaxation or the retardation times to obtain the minimum of the relative error. For a physical meaning the admissible solutions do not include negative relaxation or retardation times. The method may be used to obtain an approximation of the discrete relaxation or retardation spectra from dynamic experimental data The error within this procedure is discussed. |
publishDate |
1998 |
dc.date.none.fl_str_mv |
1998 1998-01-01T00:00:00Z |
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://repositorio-aberto.up.pt/handle/10216/78088 |
url |
https://repositorio-aberto.up.pt/handle/10216/78088 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
0334-181X |
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.source.none.fl_str_mv |
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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 |
|
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1799135684067328000 |