Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments

15 páginas, 10 figuras

Detalhes bibliográficos
Autores: Bravo, Teresa, Maury, Cédric
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2022
País:España
Recursos:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/285303
Acesso em linha:http://hdl.handle.net/10261/285303
Access Level:acceso abierto
Palavra-chave:Micro-perforated serial and parallel absorbers
optimization
sound absorption
causality
id ES_a63e9d0e8e786dfefb83c0d7f16195cc
oai_identifier_str oai:digital.csic.es:10261/285303
network_acronym_str ES
network_name_str España
repository_id_str
spelling Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experimentsBravo, TeresaMaury, CédricMicro-perforated serial and parallel absorbersoptimizationsound absorptioncausality15 páginas, 10 figurasA causal-based optimization criterion has been theoretically derived in an earlier study for a single-layer micro-perforated absorber (MPA) under normal incidence. In this study, it is extended to multiple and parallel MPA systems as well as to general incidence. It is shown that the ultimate wideband performance of multiple (resp. parallel) MPAs scale on their overall (resp. effective) cavity depths, with adverse effect of the incidence angle. The multi-variate constrained optimization process requires maximising the sensitivity of the total reflected intensity, integrated over all wavelengths, with respect to the parameters constitutive of the micro-perforated panels. It leads to perfect absorption and broad bandwidth efficiency at one or several resonant states of the MPAs. As for serial MPA systems, it is a suitable sub-optimal alternative to total absorption and inverse-frequency weighted absorption maximizations. Concerning MPA arrays, the causal-based optimal design brings near-unit absorption over a wide bandwidth in the low-frequency domain due to efficient grouping and merging of cross-coupled resonant states. It brings similar performance to direct maximization of the total inverse-frequency weighted absorption that puts weight on the low frequencies. These optimal performances have been verified through standing wave tube absorption measurements for single and double-layer MPAs and through finite element simulation for MPA arrays.This work has been funded by The Ministerio de Economía y Competitividad in Spain, project TRA2017–87978-R, AEI/FEDER, UE, and the mobility program ILINK+2018. It was supported in France by the ANR VIRTECH (ANR-17-CE10–0012–01).Peer reviewedElsevierMinisterio de Economía y Competitividad (España)Agencia Estatal de Investigación (España)European CommissionConsejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]2022202220222022info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501Publisher's versioninfo:eu-repo/semantics/publishedVersionapplication/pdfhttp://hdl.handle.net/10261/285303reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Inglés#PLACEHOLDER_PARENT_METADATA_VALUE#info:eu-repo/grantAgreement/MINECO//TRA2017–87978-Rhttp://dx.doi.org/10.1016/j.jsv.2021.116735Síinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/2853032026-05-22T06:33:51Z
dc.title.none.fl_str_mv Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
title Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
spellingShingle Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
Bravo, Teresa
Micro-perforated serial and parallel absorbers
optimization
sound absorption
causality
title_short Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
title_full Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
title_fullStr Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
title_full_unstemmed Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
title_sort Causally-guided acoustic optimization of rigidly-backed micro-perforated partitions: Case studies and experiments
dc.creator.none.fl_str_mv Bravo, Teresa
Maury, Cédric
author Bravo, Teresa
author_facet Bravo, Teresa
Maury, Cédric
author_role author
author2 Maury, Cédric
author2_role author
dc.contributor.none.fl_str_mv Ministerio de Economía y Competitividad (España)
Agencia Estatal de Investigación (España)
European Commission
Consejo Superior de Investigaciones Científicas [https://ror.org/02gfc7t72]
dc.subject.none.fl_str_mv Micro-perforated serial and parallel absorbers
optimization
sound absorption
causality
topic Micro-perforated serial and parallel absorbers
optimization
sound absorption
causality
description 15 páginas, 10 figuras
publishDate 2022
dc.date.none.fl_str_mv 2022
2022
2022
2022
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
Publisher's version
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/285303
url http://hdl.handle.net/10261/285303
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv #PLACEHOLDER_PARENT_METADATA_VALUE#
info:eu-repo/grantAgreement/MINECO//TRA2017–87978-R
http://dx.doi.org/10.1016/j.jsv.2021.116735
Sí
dc.rights.none.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
publisher.none.fl_str_mv Elsevier
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869415682156789760
score 15,812455

Registos relacionados