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Estimating the airflow resistivity of porous materials in an impedance tube using an electroacoustic technique

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Estimating the airflow resistivity of porous materials in an impedance tube using an electroacoustic technique

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dc.contributor.author Rodríguez-Vercher, Juan-Carlos es_ES
dc.contributor.author Alba, Jesus es_ES
dc.contributor.author Arenas, Jorge P. es_ES
dc.contributor.author del Rey, Romina es_ES
dc.date.accessioned 2023-03-30T18:01:19Z
dc.date.available 2023-03-30T18:01:19Z
dc.date.issued 2022-12 es_ES
dc.identifier.issn 0003-682X es_ES
dc.identifier.uri http://hdl.handle.net/10251/192661
dc.description.abstract [EN] Airflow resistivity is an essential parameter for characterizing air-saturated porous sound-absorbing materials theoretically and selecting sound-absorbing materials in practice. Although standardized methods can determine this non-acoustic parameter in the laboratory, many indirect alternative methods have been proposed to measure it. One of them is the technique presented in the 1980s by Ingard and Dear using a standing wave tube, a loudspeaker, and two microphones. This paper suggests an electroacoustic procedure based on a modification of the Ingard and Dear setup. Equations are derived through the transfer matrix method. After a simple calibration, the airflow resistivity of a material sample is indirectly estimated from the total electric impedance measured at the loudspeaker input connection terminals. Thus,implementing the proposed method is straightforward and inexpensive, since microphones and complex instrumentation are unnecessary. The method is tested by comparing measured values of the airflow resistivity of different material samples with those obtained through the Ingar and Dear approach and the ISO standardized method. Reasonably good agreement is observed, confirming the validity of the electroacoustic method. es_ES
dc.description.sponsorship This work has been financially supported by the Conselleria de Innovacion, Universidades, Ciencia y Sociedad - Generalitat Valen-ciana, through the ACIF-2020 program [Grant No. ACIF/2020/401] , and the European Social Fund. es_ES
dc.language Inglés es_ES
dc.publisher Elsevier es_ES
dc.relation.ispartof Applied Acoustics es_ES
dc.rights Reconocimiento - No comercial - Sin obra derivada (by-nc-nd) es_ES
dc.subject Airflow resistivity es_ES
dc.subject Porous materials es_ES
dc.subject Electroacoustics es_ES
dc.subject Impedance tube es_ES
dc.subject.classification FISICA APLICADA es_ES
dc.title Estimating the airflow resistivity of porous materials in an impedance tube using an electroacoustic technique es_ES
dc.type Artículo es_ES
dc.identifier.doi 10.1016/j.apacoust.2022.109089 es_ES
dc.relation.projectID info:eu-repo/grantAgreement/GENERALITAT VALENCIANA//ACIF%2F2020%2F401//AYUDA PREDOCTORAL GVA-RODRIGUEZ VERCHER. PROYECTO: DISEÑO DE NUEVAS TECNICAS ELECTROACUSTICAS PARA LA CARACTERIZACION DE MATERIALES./ es_ES
dc.rights.accessRights Embargado es_ES
dc.date.embargoEndDate 2024-11-12 es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Politécnica Superior de Alcoy - Escola Politècnica Superior d'Alcoi es_ES
dc.contributor.affiliation Universitat Politècnica de València. Escuela Politécnica Superior de Gandia - Escola Politècnica Superior de Gandia es_ES
dc.description.bibliographicCitation Rodríguez-Vercher, J.; Alba, J.; Arenas, JP.; Del Rey, R. (2022). Estimating the airflow resistivity of porous materials in an impedance tube using an electroacoustic technique. Applied Acoustics. 201:1-8. https://doi.org/10.1016/j.apacoust.2022.109089 es_ES
dc.description.accrualMethod S es_ES
dc.relation.publisherversion https://doi.org/10.1016/j.apacoust.2022.109089 es_ES
dc.description.upvformatpinicio 1 es_ES
dc.description.upvformatpfin 8 es_ES
dc.type.version info:eu-repo/semantics/publishedVersion es_ES
dc.description.volume 201 es_ES
dc.relation.pasarela S\476910 es_ES
dc.contributor.funder European Social Fund es_ES
dc.contributor.funder GENERALITAT VALENCIANA es_ES


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