title: How reproducible is the acoustical characterization of porous media?
abstract: There is a considerable number of research publications on the characterization of porous media that is carried out in accordance with ISO 10534-2 (International Standards Organization, Geneva, Switzerland, 2001) and/or ISO 9053 (International Standards Organization, Geneva, Switzerland, 1991). According to the Web of ScienceTM(last accessed 22 September 2016) there were 339 publications in the Journal of the Acoustical Society of America alone which deal with the acoustics of porous media. However, the reproducibility of these characterization procedures is not well understood. This paper deals with the reproducibility of some standard characterization procedures for acoustic porous materials. The paper is an extension of the work published by Horoshenkov, Khan, Bécot, Jaouen, Sgard, Renault, Amirouche, Pompoli, Prodi, Bonfiglio, Pispola, Asdrubali, Hübelt, Atalla, Amédin, Lauriks, and Boeckx [J. Acoust. Soc. Am. 122(1), 345-353 (2007)]. In this paper, independent laboratory measurements were performed on the same material specimens so that the naturally occurring inhomogeneity in materials was controlled. It also presented the reproducibility data for the characteristic impedance, complex wavenumber, and for some related pore structure properties. This work can be helpful to better understand the tolerances of these material characterization procedures so improvements can be developed to reduce experimental errors and improve the reproducibility between laboratories.
authors.affiliation: Department of Engineering (ENDIF), University of Ferrara, Ferrara, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Pompoli
authors.affiliation: Department of Engineering (ENDIF), University of Ferrara, Ferrara, Italy.
authors.forename: Paolo
authors.initials: P
authors.lastname: Bonfiglio
authors.affiliation: Department of Mechanical Engineering, University of Sheffield, Sheffield, United Kingdom.
authors.forename: Kirill V
authors.initials: KV
authors.lastname: Horoshenkov
authors.affiliation: School of Engineering, Design and Technology, University of Bradford, Bradford, United Kingdom.
authors.forename: Amir
authors.initials: A
authors.lastname: Khan
authors.affiliation: Matelys-Research Lab, Vaulx-en-Velin, France.
authors.forename: Luc
authors.initials: L
authors.lastname: Jaouen
authors.affiliation: Matelys-Research Lab, Vaulx-en-Velin, France.
authors.forename: François-Xavier
authors.initials: FX
authors.lastname: Bécot
authors.affiliation: Institut de recherche Robert-Sauvé en santé et en sécurité du travail (IRSST), Montreal, Canada.
authors.forename: Franck
authors.initials: F
authors.lastname: Sgard
authors.affiliation: Department of Engineering, University of Rome Tre, Rome, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: Asdrubali
authors.affiliation: Department of Civil and Environmental Engineering, University of Perugia, Perugia, Italy.
authors.forename: Francesco
authors.initials: F
authors.lastname: D'Alessandro
authors.affiliation: Gesellschaft für Akustikforschung Dresden mbH (AFD), Dresden, Germany.
authors.forename: Jörn
authors.initials: J
authors.lastname: Hübelt
authors.affiliation: Acoustics and Vibration Group, Faculty of Applied Sciences, University of Sherbrooke, Sherbrooke, Canada.
authors.forename: Noureddine
authors.initials: N
authors.lastname: Atalla
authors.affiliation: Acoustics and Vibration Group, Faculty of Applied Sciences, University of Sherbrooke, Sherbrooke, Canada.
authors.forename: Celse K
authors.initials: CK
authors.lastname: Amédin
authors.affiliation: Katholieke Universiteit Leuven, Leuven, Belgium.
authors.forename: Walter
authors.initials: W
authors.lastname: Lauriks
authors.affiliation: Katholieke Universiteit Leuven, Leuven, Belgium.
authors.forename: Laurens
authors.initials: L
authors.lastname: Boeckx