On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces

Detalhes bibliográficos
Autor(a) principal: Berry, David
Data de Publicação: 2019
Tipo de documento: Artigo de conferência
Idioma: por
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10174/27211
Resumo: An acoustic surface wave is an evanescent wave that spreads cylindrically along the surface but decays exponentially with height above the surface. This wave travels at a little less than the speed of sound in air and is primarily related to the pore or surface. Surface waves are generated also when sound propagates over rough hard surface. This phenomenon is related to coherent multiple scattering from roughness elements. This paper investigates conditions under which surface waves are generated and propagated and the relationship between this surface wave frequency and the geometry are explored by measurements of the sound field due to a point source above periodically-spaced rigid strips placed on a rigid surface and by a Boundary Element Method in time-domain.
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spelling On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic SurfacesPhysical AcousticsAcoustic Propagation and ScatteringMetamaterialsNoise ControlAn acoustic surface wave is an evanescent wave that spreads cylindrically along the surface but decays exponentially with height above the surface. This wave travels at a little less than the speed of sound in air and is primarily related to the pore or surface. Surface waves are generated also when sound propagates over rough hard surface. This phenomenon is related to coherent multiple scattering from roughness elements. This paper investigates conditions under which surface waves are generated and propagated and the relationship between this surface wave frequency and the geometry are explored by measurements of the sound field due to a point source above periodically-spaced rigid strips placed on a rigid surface and by a Boundary Element Method in time-domain.International Congress on Acoustics2020-02-21T15:26:08Z2020-02-212019-09-11T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/conferenceObjecthttp://hdl.handle.net/10174/27211http://hdl.handle.net/10174/27211porTaherzadeh, S., Stronach, A., Berry, D. & Attenborough, K. "On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces", Proceedings, ICA2019, 2019.http://app.ica2019.org/konferenz?article=716simsimnaodberry@uevora.pt344Berry, Davidinfo: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:RCAAP2024-01-03T19:22:31Zoai:dspace.uevora.pt:10174/27211Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-20T01:17:18.968673Repositório 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 On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
title On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
spellingShingle On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
Berry, David
Physical Acoustics
Acoustic Propagation and Scattering
Metamaterials
Noise Control
title_short On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
title_full On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
title_fullStr On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
title_full_unstemmed On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
title_sort On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces
author Berry, David
author_facet Berry, David
author_role author
dc.contributor.author.fl_str_mv Berry, David
dc.subject.por.fl_str_mv Physical Acoustics
Acoustic Propagation and Scattering
Metamaterials
Noise Control
topic Physical Acoustics
Acoustic Propagation and Scattering
Metamaterials
Noise Control
description An acoustic surface wave is an evanescent wave that spreads cylindrically along the surface but decays exponentially with height above the surface. This wave travels at a little less than the speed of sound in air and is primarily related to the pore or surface. Surface waves are generated also when sound propagates over rough hard surface. This phenomenon is related to coherent multiple scattering from roughness elements. This paper investigates conditions under which surface waves are generated and propagated and the relationship between this surface wave frequency and the geometry are explored by measurements of the sound field due to a point source above periodically-spaced rigid strips placed on a rigid surface and by a Boundary Element Method in time-domain.
publishDate 2019
dc.date.none.fl_str_mv 2019-09-11T00:00:00Z
2020-02-21T15:26:08Z
2020-02-21
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/conferenceObject
format conferenceObject
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10174/27211
http://hdl.handle.net/10174/27211
url http://hdl.handle.net/10174/27211
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv Taherzadeh, S., Stronach, A., Berry, D. & Attenborough, K. "On Generation and Propagation of Acoustic Surface Waves over Rough, Periodic Surfaces", Proceedings, ICA2019, 2019.
http://app.ica2019.org/konferenz?article=716
sim
sim
nao
dberry@uevora.pt
344
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv International Congress on Acoustics
publisher.none.fl_str_mv International Congress on Acoustics
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)
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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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