Impedance tube measurements of the effective acoustic properties of anisotropic porous media

Lino Morin; Mélanie Nolan; Théo Cavalieri; Mathieu Gaborit; Kirill Horoshenkov; Vicente Romero-García; Jean Philippe Groby

doi:10.61782/fa.2023.0973

Impedance tube measurements of the effective acoustic properties of anisotropic porous media

Lino Morin^*
, Mélanie Nolan
, Théo Cavalieri
, Mathieu Gaborit
, Kirill Horoshenkov
, Vicente Romero-García
, Jean Philippe Groby

^*Corresponding author for this work

CNRS
Swiss Federal Laboratories for Materials Science and Technology (Empa)
University of Sheffield
Polytechnic University of Valencia

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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Abstract

Porous media such as foams and wools can be described as effective anisotropic fluid materials that are characterized by a bulk modulus and a full symmetric density tensor. This paper presents a method for retrieving the bulk modulus and all six components of the density tensor from reflection and transmission coefficients measured in an impedance tube. The reflection and transmission properties are estimated for six different orientations of the measuring sample (one per coefficient of the density tensor) and an inverse problem is formulated to infer the seven effective fluid parameters. After diagonalization of the density tensor and determination of the principal directions, the effective parameters, namely the Johnson-Champoux-Allard-Lafarge (JCAL) parameters, are recovered via a deterministic minimization procedure. The validity of the method is examined experimentally on a commercial glasswool material, with principal axes tilted in a priori unknown directions.

Original language	English
Title of host publication	Proceedings of 10^th Convention of the European Acoustics Association
Publisher	European Acoustics Association, EAA
Publication date	2023
Pages	4619-4622
ISBN (Electronic)	9788888942674
DOIs	https://doi.org/10.61782/fa.2023.0973
Publication status	Published - 2023
Event	10th Convention of the European Acoustics Association - Politecnico di Torino, Torino, Italy Duration: 11 Sept 2023 → 15 Sept 2023 https://www.fa2023.org/

Conference

Conference	10th Convention of the European Acoustics Association
Location	Politecnico di Torino
Country/Territory	Italy
City	Torino
Period	11/09/2023 → 15/09/2023
Internet address	https://www.fa2023.org/

Bibliographical note

Publisher Copyright:
© 2023 Morin et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Keywords

Anisotropic porous media
Impedance tube
Reflection
Transmission coefficients

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10.61782/fa.2023.0973

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title = "Impedance tube measurements of the effective acoustic properties of anisotropic porous media",

abstract = "Porous media such as foams and wools can be described as effective anisotropic fluid materials that are characterized by a bulk modulus and a full symmetric density tensor. This paper presents a method for retrieving the bulk modulus and all six components of the density tensor from reflection and transmission coefficients measured in an impedance tube. The reflection and transmission properties are estimated for six different orientations of the measuring sample (one per coefficient of the density tensor) and an inverse problem is formulated to infer the seven effective fluid parameters. After diagonalization of the density tensor and determination of the principal directions, the effective parameters, namely the Johnson-Champoux-Allard-Lafarge (JCAL) parameters, are recovered via a deterministic minimization procedure. The validity of the method is examined experimentally on a commercial glasswool material, with principal axes tilted in a priori unknown directions.",

keywords = "Anisotropic porous media, Impedance tube, Reflection, Transmission coefficients",

author = "Lino Morin and M{\'e}lanie Nolan and Th{\'e}o Cavalieri and Mathieu Gaborit and Kirill Horoshenkov and Vicente Romero-Garc{\'i}a and Groby, \{Jean Philippe\}",

note = "Publisher Copyright: {\textcopyright} 2023 Morin et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.; 10th Convention of the European Acoustics Association, EAA 2023 ; Conference date: 11-09-2023 Through 15-09-2023",

year = "2023",

doi = "10.61782/fa.2023.0973",

language = "English",

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booktitle = "Proceedings of 10th Convention of the European Acoustics Association",

publisher = "European Acoustics Association, EAA",

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}

Morin, L, Nolan, M, Cavalieri, T, Gaborit, M, Horoshenkov, K, Romero-García, V & Groby, JP 2023, Impedance tube measurements of the effective acoustic properties of anisotropic porous media. in Proceedings of 10^th Convention of the European Acoustics Association. European Acoustics Association, EAA, pp. 4619-4622, 10th Convention of the European Acoustics Association, Torino, Italy, 11/09/2023. https://doi.org/10.61782/fa.2023.0973

Impedance tube measurements of the effective acoustic properties of anisotropic porous media. / Morin, Lino; Nolan, Mélanie; Cavalieri, Théo et al.
Proceedings of 10^th Convention of the European Acoustics Association. European Acoustics Association, EAA, 2023. p. 4619-4622.

Research output: Chapter in Book/Report/Conference proceeding › Article in proceedings › Research › peer-review

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T1 - Impedance tube measurements of the effective acoustic properties of anisotropic porous media

AU - Morin, Lino

AU - Nolan, Mélanie

AU - Cavalieri, Théo

AU - Gaborit, Mathieu

AU - Horoshenkov, Kirill

AU - Romero-García, Vicente

AU - Groby, Jean Philippe

N1 - Publisher Copyright: © 2023 Morin et al. This is an open-access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

PY - 2023

Y1 - 2023

N2 - Porous media such as foams and wools can be described as effective anisotropic fluid materials that are characterized by a bulk modulus and a full symmetric density tensor. This paper presents a method for retrieving the bulk modulus and all six components of the density tensor from reflection and transmission coefficients measured in an impedance tube. The reflection and transmission properties are estimated for six different orientations of the measuring sample (one per coefficient of the density tensor) and an inverse problem is formulated to infer the seven effective fluid parameters. After diagonalization of the density tensor and determination of the principal directions, the effective parameters, namely the Johnson-Champoux-Allard-Lafarge (JCAL) parameters, are recovered via a deterministic minimization procedure. The validity of the method is examined experimentally on a commercial glasswool material, with principal axes tilted in a priori unknown directions.

AB - Porous media such as foams and wools can be described as effective anisotropic fluid materials that are characterized by a bulk modulus and a full symmetric density tensor. This paper presents a method for retrieving the bulk modulus and all six components of the density tensor from reflection and transmission coefficients measured in an impedance tube. The reflection and transmission properties are estimated for six different orientations of the measuring sample (one per coefficient of the density tensor) and an inverse problem is formulated to infer the seven effective fluid parameters. After diagonalization of the density tensor and determination of the principal directions, the effective parameters, namely the Johnson-Champoux-Allard-Lafarge (JCAL) parameters, are recovered via a deterministic minimization procedure. The validity of the method is examined experimentally on a commercial glasswool material, with principal axes tilted in a priori unknown directions.

KW - Anisotropic porous media

KW - Impedance tube

KW - Reflection

KW - Transmission coefficients

U2 - 10.61782/fa.2023.0973

DO - 10.61782/fa.2023.0973

M3 - Article in proceedings

AN - SCOPUS:85191227578

SP - 4619

EP - 4622

BT - Proceedings of 10th Convention of the European Acoustics Association

PB - European Acoustics Association, EAA

T2 - 10th Convention of the European Acoustics Association

Y2 - 11 September 2023 through 15 September 2023

ER -

Impedance tube measurements of the effective acoustic properties of anisotropic porous media

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Keywords

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