Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring
Autor(a) principal: | |
---|---|
Data de Publicação: | 2018 |
Outros Autores: | , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Latin American journal of solids and structures (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252018001000507 |
Resumo: | Abstract This work presents the effect of the high curvature to thickness ratio on the characteristics of Lamb Waves propagating over the skins of composite structures. It is accessed how the curvature on composite skins affects the group velocity of the symmetrical (S0) and asymmetrical (A0) wave modes. It is also accessed the gradient of curvature effect, when the wave propagates from a flat to a curved part on the skin. The results are intended to be used for the improvement of structural health monitoring of wings and wind turbine blades. This is accomplished through dynamic explicit linear finite element method simulations of plates with flat and curved parts made of Eglass-epoxy bidirectional laminate. As the skin structures are often designed to withstand torsional loads, the fibers are aligned with 45 degrees from the leading edge (curved region) throughout the analysis. Several skins with different curvature to thickness ratios are generated and simulated. Results and trends are presented and can be used to improve the algorithms for damage detection on those structures. It is shown that the group velocity of the incoming waves change considerably with the presence of curvature, for both main modes of vibration. |
id |
ABCM-1_7e5ce39c1e6e27d20b0df7a574075e2d |
---|---|
oai_identifier_str |
oai:scielo:S1679-78252018001000507 |
network_acronym_str |
ABCM-1 |
network_name_str |
Latin American journal of solids and structures (Online) |
repository_id_str |
|
spelling |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoringTDFEMLamb wavescurvatureglass fibercompositesGFRPSHMAbstract This work presents the effect of the high curvature to thickness ratio on the characteristics of Lamb Waves propagating over the skins of composite structures. It is accessed how the curvature on composite skins affects the group velocity of the symmetrical (S0) and asymmetrical (A0) wave modes. It is also accessed the gradient of curvature effect, when the wave propagates from a flat to a curved part on the skin. The results are intended to be used for the improvement of structural health monitoring of wings and wind turbine blades. This is accomplished through dynamic explicit linear finite element method simulations of plates with flat and curved parts made of Eglass-epoxy bidirectional laminate. As the skin structures are often designed to withstand torsional loads, the fibers are aligned with 45 degrees from the leading edge (curved region) throughout the analysis. Several skins with different curvature to thickness ratios are generated and simulated. Results and trends are presented and can be used to improve the algorithms for damage detection on those structures. It is shown that the group velocity of the incoming waves change considerably with the presence of curvature, for both main modes of vibration.Associação Brasileira de Ciências Mecânicas2018-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252018001000507Latin American Journal of Solids and Structures v.15 n.10 2018reponame:Latin American journal of solids and structures (Online)instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)instacron:ABCM10.1590/1679-78255193info:eu-repo/semantics/openAccessSantana,Guilherme AndréMalekan,MohammadAraújo,Alexandre MartinsDonadon,Lázaro ValentimCimini Jr,Carlos Albertoeng2018-10-08T00:00:00Zoai:scielo:S1679-78252018001000507Revistahttp://www.scielo.br/scielo.php?script=sci_serial&pid=1679-7825&lng=pt&nrm=isohttps://old.scielo.br/oai/scielo-oai.phpabcm@abcm.org.br||maralves@usp.br1679-78251679-7817opendoar:2018-10-08T00:00Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM)false |
dc.title.none.fl_str_mv |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
title |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
spellingShingle |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring Santana,Guilherme André TDFEM Lamb waves curvature glass fiber composites GFRP SHM |
title_short |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
title_full |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
title_fullStr |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
title_full_unstemmed |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
title_sort |
Finite element evaluation of the effects of curvature in Lamb waves for composites structural health monitoring |
author |
Santana,Guilherme André |
author_facet |
Santana,Guilherme André Malekan,Mohammad Araújo,Alexandre Martins Donadon,Lázaro Valentim Cimini Jr,Carlos Alberto |
author_role |
author |
author2 |
Malekan,Mohammad Araújo,Alexandre Martins Donadon,Lázaro Valentim Cimini Jr,Carlos Alberto |
author2_role |
author author author author |
dc.contributor.author.fl_str_mv |
Santana,Guilherme André Malekan,Mohammad Araújo,Alexandre Martins Donadon,Lázaro Valentim Cimini Jr,Carlos Alberto |
dc.subject.por.fl_str_mv |
TDFEM Lamb waves curvature glass fiber composites GFRP SHM |
topic |
TDFEM Lamb waves curvature glass fiber composites GFRP SHM |
description |
Abstract This work presents the effect of the high curvature to thickness ratio on the characteristics of Lamb Waves propagating over the skins of composite structures. It is accessed how the curvature on composite skins affects the group velocity of the symmetrical (S0) and asymmetrical (A0) wave modes. It is also accessed the gradient of curvature effect, when the wave propagates from a flat to a curved part on the skin. The results are intended to be used for the improvement of structural health monitoring of wings and wind turbine blades. This is accomplished through dynamic explicit linear finite element method simulations of plates with flat and curved parts made of Eglass-epoxy bidirectional laminate. As the skin structures are often designed to withstand torsional loads, the fibers are aligned with 45 degrees from the leading edge (curved region) throughout the analysis. Several skins with different curvature to thickness ratios are generated and simulated. Results and trends are presented and can be used to improve the algorithms for damage detection on those structures. It is shown that the group velocity of the incoming waves change considerably with the presence of curvature, for both main modes of vibration. |
publishDate |
2018 |
dc.date.none.fl_str_mv |
2018-01-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252018001000507 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1679-78252018001000507 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/1679-78255193 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
publisher.none.fl_str_mv |
Associação Brasileira de Ciências Mecânicas |
dc.source.none.fl_str_mv |
Latin American Journal of Solids and Structures v.15 n.10 2018 reponame:Latin American journal of solids and structures (Online) instname:Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
instname_str |
Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
instacron_str |
ABCM |
institution |
ABCM |
reponame_str |
Latin American journal of solids and structures (Online) |
collection |
Latin American journal of solids and structures (Online) |
repository.name.fl_str_mv |
Latin American journal of solids and structures (Online) - Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) |
repository.mail.fl_str_mv |
abcm@abcm.org.br||maralves@usp.br |
_version_ |
1754302889677815808 |