Structural health monitoring of sandwich structures based on dynamic analysis
Autor(a) principal: | |
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Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Repositório Institucional da UNESP |
Texto Completo: | http://dx.doi.org/10.1590/1679-78254309 http://hdl.handle.net/11449/186969 |
Resumo: | This work aims to contribute to the development of SHM systems based on vibration methods to be applied on sandwich structures. The main objective is focused on experimental damage identification via changes in the Frequency Response Function (FRF) with the usage of damage metrics. Specimens of sandwich structures made from skins of epoxy resin reinforced by glass fiber and a core of PVC foam are manufactured. First, preliminary non-damped Finite Element (FE) models are performed, and results obtained are used to define the frequency range of interest for the experimental procedure. After that, vibration experimental analyses are carried out on undamaged specimens. The natural frequencies are compared to the preliminary FE results. Second, experimental analyses are performed on damaged specimens with and without piezoelectric sensors. Then, damage metric values are calculated based on FRFs for damaged and undamaged structures, which were obtained from experimental and FE analyses (with damping effects). In addition, a new procedure is proposed to improve the quality of results provided by the damage metric. It is shown that the new procedure is very effective to identify the damage using both amplitude and phase from FRFs. Lastly, it is discussed the potential and limitations of the FE model to predict damage metric values, comparing to experimental data. |
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Repositório Institucional da UNESP |
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Structural health monitoring of sandwich structures based on dynamic analysisExperimental analysisFinite element analysisSandwich structuresStructural health monitoringVibration methodsThis work aims to contribute to the development of SHM systems based on vibration methods to be applied on sandwich structures. The main objective is focused on experimental damage identification via changes in the Frequency Response Function (FRF) with the usage of damage metrics. Specimens of sandwich structures made from skins of epoxy resin reinforced by glass fiber and a core of PVC foam are manufactured. First, preliminary non-damped Finite Element (FE) models are performed, and results obtained are used to define the frequency range of interest for the experimental procedure. After that, vibration experimental analyses are carried out on undamaged specimens. The natural frequencies are compared to the preliminary FE results. Second, experimental analyses are performed on damaged specimens with and without piezoelectric sensors. Then, damage metric values are calculated based on FRFs for damaged and undamaged structures, which were obtained from experimental and FE analyses (with damping effects). In addition, a new procedure is proposed to improve the quality of results provided by the damage metric. It is shown that the new procedure is very effective to identify the damage using both amplitude and phase from FRFs. Lastly, it is discussed the potential and limitations of the FE model to predict damage metric values, comparing to experimental data.Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)Air Force Office of Scientific ResearchFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)Departamento de Engenharia Aeronáutica São Carlos Universidade de São Paulo (USP)Departamento de Engenharia Mecânica Colé-gio de Ciências Tecnológicas Universidade Estadual de Santa Catarina-UdescUniversidade Estadual de São Paulo (UNESP)Universidade Estadual de São Paulo (UNESP)CNPq: 139806/2013-0CNPq: 152445/2016-1CNPq: 310094/2015-1CNPq: 401170/2014-4Air Force Office of Scientific Research: FA9550-16-1-0222Universidade de São Paulo (USP)Universidade Estadual de Santa Catarina-UdescUniversidade Estadual Paulista (Unesp)Marques, DenysFlor, Felipe R.de Medeiros, RicardoPagani Junior, Carlos Do Carmo [UNESP]Tita, Volnei2019-10-06T15:21:26Z2019-10-06T15:21:26Z2018-01-01info:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://dx.doi.org/10.1590/1679-78254309Latin American Journal of Solids and Structures, v. 15, n. 11MecSol2017Joinville, 2018.1679-78251679-7817http://hdl.handle.net/11449/18696910.1590/1679-78254309S1679-782520180011007072-s2.0-85055030698S1679-78252018001100707.pdfScopusreponame:Repositório Institucional da UNESPinstname:Universidade Estadual Paulista (UNESP)instacron:UNESPengLatin American Journal of Solids and Structuresinfo:eu-repo/semantics/openAccess2024-01-15T06:20:42Zoai:repositorio.unesp.br:11449/186969Repositório InstitucionalPUBhttp://repositorio.unesp.br/oai/requestopendoar:29462024-08-05T23:02:57.502129Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP)false |
dc.title.none.fl_str_mv |
Structural health monitoring of sandwich structures based on dynamic analysis |
title |
Structural health monitoring of sandwich structures based on dynamic analysis |
spellingShingle |
Structural health monitoring of sandwich structures based on dynamic analysis Marques, Denys Experimental analysis Finite element analysis Sandwich structures Structural health monitoring Vibration methods |
title_short |
Structural health monitoring of sandwich structures based on dynamic analysis |
title_full |
Structural health monitoring of sandwich structures based on dynamic analysis |
title_fullStr |
Structural health monitoring of sandwich structures based on dynamic analysis |
title_full_unstemmed |
Structural health monitoring of sandwich structures based on dynamic analysis |
title_sort |
Structural health monitoring of sandwich structures based on dynamic analysis |
author |
Marques, Denys |
author_facet |
Marques, Denys Flor, Felipe R. de Medeiros, Ricardo Pagani Junior, Carlos Do Carmo [UNESP] Tita, Volnei |
author_role |
author |
author2 |
Flor, Felipe R. de Medeiros, Ricardo Pagani Junior, Carlos Do Carmo [UNESP] Tita, Volnei |
author2_role |
author author author author |
dc.contributor.none.fl_str_mv |
Universidade de São Paulo (USP) Universidade Estadual de Santa Catarina-Udesc Universidade Estadual Paulista (Unesp) |
dc.contributor.author.fl_str_mv |
Marques, Denys Flor, Felipe R. de Medeiros, Ricardo Pagani Junior, Carlos Do Carmo [UNESP] Tita, Volnei |
dc.subject.por.fl_str_mv |
Experimental analysis Finite element analysis Sandwich structures Structural health monitoring Vibration methods |
topic |
Experimental analysis Finite element analysis Sandwich structures Structural health monitoring Vibration methods |
description |
This work aims to contribute to the development of SHM systems based on vibration methods to be applied on sandwich structures. The main objective is focused on experimental damage identification via changes in the Frequency Response Function (FRF) with the usage of damage metrics. Specimens of sandwich structures made from skins of epoxy resin reinforced by glass fiber and a core of PVC foam are manufactured. First, preliminary non-damped Finite Element (FE) models are performed, and results obtained are used to define the frequency range of interest for the experimental procedure. After that, vibration experimental analyses are carried out on undamaged specimens. The natural frequencies are compared to the preliminary FE results. Second, experimental analyses are performed on damaged specimens with and without piezoelectric sensors. Then, damage metric values are calculated based on FRFs for damaged and undamaged structures, which were obtained from experimental and FE analyses (with damping effects). In addition, a new procedure is proposed to improve the quality of results provided by the damage metric. It is shown that the new procedure is very effective to identify the damage using both amplitude and phase from FRFs. Lastly, it is discussed the potential and limitations of the FE model to predict damage metric values, comparing to experimental data. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 2019-10-06T15:21:26Z 2019-10-06T15:21:26Z |
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://dx.doi.org/10.1590/1679-78254309 Latin American Journal of Solids and Structures, v. 15, n. 11MecSol2017Joinville, 2018. 1679-7825 1679-7817 http://hdl.handle.net/11449/186969 10.1590/1679-78254309 S1679-78252018001100707 2-s2.0-85055030698 S1679-78252018001100707.pdf |
url |
http://dx.doi.org/10.1590/1679-78254309 http://hdl.handle.net/11449/186969 |
identifier_str_mv |
Latin American Journal of Solids and Structures, v. 15, n. 11MecSol2017Joinville, 2018. 1679-7825 1679-7817 10.1590/1679-78254309 S1679-78252018001100707 2-s2.0-85055030698 S1679-78252018001100707.pdf |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
Latin American Journal of Solids and Structures |
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 |
Scopus reponame:Repositório Institucional da UNESP instname:Universidade Estadual Paulista (UNESP) instacron:UNESP |
instname_str |
Universidade Estadual Paulista (UNESP) |
instacron_str |
UNESP |
institution |
UNESP |
reponame_str |
Repositório Institucional da UNESP |
collection |
Repositório Institucional da UNESP |
repository.name.fl_str_mv |
Repositório Institucional da UNESP - Universidade Estadual Paulista (UNESP) |
repository.mail.fl_str_mv |
|
_version_ |
1808129484574949376 |