On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements

The article focuses on the determination of the acoustic properties (sound transmission loss, sound absorption and transmission coefficient under acoustic plane wave excitation) of membrane-type of specimens by means of a combination of incident plane wave sound pressure and membrane surface displac...

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Autores principales:	Daniel Urbán, N. B. Roozen, Vojtech Jandák, Marek Brothánek, Ondřej Jiříček
Formato:	article
Lenguaje:	EN
Publicado:	MDPI AG 2021
Materias:	membranes acoustics measurement method transmission loss simulations experiment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
Acceso en línea:	https://doaj.org/article/f27876c200f0430d945ec9368612f0e4
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spelling	oai:doaj.org-article:f27876c200f0430d945ec9368612f0e42021-11-11T15:23:46ZOn the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements10.3390/app1121103572076-3417https://doaj.org/article/f27876c200f0430d945ec9368612f0e42021-11-01T00:00:00Zhttps://www.mdpi.com/2076-3417/11/21/10357https://doaj.org/toc/2076-3417The article focuses on the determination of the acoustic properties (sound transmission loss, sound absorption and transmission coefficient under acoustic plane wave excitation) of membrane-type of specimens by means of a combination of incident plane wave sound pressure and membrane surface displacement information, measuring the sound pressure with a microphone and the membrane displacement by means of a laser Doppler vibrometer. An overview of known measurement methods and the theoretical background of the proposed so-called mobility-based method (MM) is presented. The proposed method was compared with the conventional methods for sound transmission loss and absorption measurement in the impedance tube, both numerically and experimentally. Finite element model (FEM) simulation results of two single layer membrane samples of different shape configurations were compared, amongst which six different variations of the backing wall termination. Four different approaches to determine the sound transmission loss and two methods to determine sound absorption properties of the membranes were compared. Subsequently, the proposed method was tested in a laboratory environment. The proposed MM method can be possibly used to measure the vibro-acoustic properties of building parts in situ.Daniel UrbánN. B. RoozenVojtech JandákMarek BrothánekOndřej JiříčekMDPI AGarticlemembranesacousticsmeasurement methodtransmission losssimulationsexperimentTechnologyTEngineering (General). Civil engineering (General)TA1-2040Biology (General)QH301-705.5PhysicsQC1-999ChemistryQD1-999ENApplied Sciences, Vol 11, Iss 10357, p 10357 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	membranes acoustics measurement method transmission loss simulations experiment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999
spellingShingle	membranes acoustics measurement method transmission loss simulations experiment Technology T Engineering (General). Civil engineering (General) TA1-2040 Biology (General) QH301-705.5 Physics QC1-999 Chemistry QD1-999 Daniel Urbán N. B. Roozen Vojtech Jandák Marek Brothánek Ondřej Jiříček On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements
description	The article focuses on the determination of the acoustic properties (sound transmission loss, sound absorption and transmission coefficient under acoustic plane wave excitation) of membrane-type of specimens by means of a combination of incident plane wave sound pressure and membrane surface displacement information, measuring the sound pressure with a microphone and the membrane displacement by means of a laser Doppler vibrometer. An overview of known measurement methods and the theoretical background of the proposed so-called mobility-based method (MM) is presented. The proposed method was compared with the conventional methods for sound transmission loss and absorption measurement in the impedance tube, both numerically and experimentally. Finite element model (FEM) simulation results of two single layer membrane samples of different shape configurations were compared, amongst which six different variations of the backing wall termination. Four different approaches to determine the sound transmission loss and two methods to determine sound absorption properties of the membranes were compared. Subsequently, the proposed method was tested in a laboratory environment. The proposed MM method can be possibly used to measure the vibro-acoustic properties of building parts in situ.
format	article
author	Daniel Urbán N. B. Roozen Vojtech Jandák Marek Brothánek Ondřej Jiříček
author_facet	Daniel Urbán N. B. Roozen Vojtech Jandák Marek Brothánek Ondřej Jiříček
author_sort	Daniel Urbán
title	On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements
title_short	On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements
title_full	On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements
title_fullStr	On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements
title_full_unstemmed	On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements
title_sort	on the determination of acoustic properties of membrane type structural skin elements by means of surface displacements
publisher	MDPI AG
publishDate	2021
url	https://doaj.org/article/f27876c200f0430d945ec9368612f0e4
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On the Determination of Acoustic Properties of Membrane Type Structural Skin Elements by Means of Surface Displacements

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