Reproducibility experiments on measuring acoustical properties of rigid-frame porous media (round-robin tests)

Horoshenkov, Kirill V.; Khan, Amir; Bécot, François‐Xavier; Jaouen, Luc; Sgard, Franck; Renault, Amélie; Amirouche, Nesrine; Pompoli, Francesco; Prodi, Nicola; Bonfiglio, Paolo; Pispola, Giulio; Asdrubali, Francesco; Hübelt, Jörn; Atalla, Noureddine; Amédin, Celse K.; Lauriks, Walter; Boeckx, Laurens

doi:10.1121/1.2739806

Cited by 56 publications

(34 citation statements)

References 6 publications

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“…Determining Young's Modulus Once Poisson's modulus has been calculated, Young's modulus is directly determined by (24).…”

Section: Polynomial Ratios Simulations Of Static Finite Elementsmentioning

confidence: 99%

“…Pilon et al [43] defined a new parameter named as Frame Acoustical Excitability and established a critical value below which the theoretical absorption could be efficiently measured using a standing wave tube. Recently Horoshenkov et al [24] have carried out reproducibility experiments on the interlaboratory characterization of the acoustical properties of three types of consolidated porous media. As main conclusions, they state that:…”

Section: Introductionmentioning

confidence: 99%

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Review in Sound Absorbing Materials

Sagartzazu

Hervella-Nieto

Pagalday

2008

Arch Computat Methods Eng

165

101

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This article is a bibliographical revision concerning acoustic absorbing materials, also known as poroelastics. These absorbing materials are a passive medium use extensively in the industry to reduce noise. This review presents the fundamental parameters that define each of the parts comprising these materials, as well as current experimental methods used to measure said parameters. Further along, we will analyze the principle models of characterization in order to study the behaviour of poroelastic materials. Given the lack of accuracy of the standing wave method three absorbing materials are characterized using said principle models. A comparison between measurements with the standing wave method and the predicted surface impedance with the models is shown.

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“…Determining Young's Modulus Once Poisson's modulus has been calculated, Young's modulus is directly determined by (24).…”

Section: Polynomial Ratios Simulations Of Static Finite Elementsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Review in Sound Absorbing Materials

Sagartzazu

Hervella-Nieto

Pagalday

2008

Arch Computat Methods Eng

165

101

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“…16 where c 0 is the sound speed in fluid. The reproducibility of this method is discussed in ref., 12 where it was shown that the variation in the measured acoustical properties can be considerable if the material is not homogeneous. In the case of materials with high flow resistivity, the accuracy of this method is also dependent on the quality of the sample preparation and on the presence of the circumferential gap between the material sample and the wall of the impedance tube as shown in references.…”

Section: Methods For Parameter Inversion Based On Asymptotic Behaviourmentioning

confidence: 99%

A Review of Acoustical Methods for Porous Material Characterisation

Horoshenkov¹

2017

IJAV

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The purpose of this paper is to present and discuss a range of in-situ and laboratory methods can be used to measure the morphological characteristics of porous materials. In the case of foams and granular media used for noise control applications, the most common of these characteristics are pore size and its distribution, porosity, and pore connectivity. In the case of fibrous media, the most useful non-acoustical characteristics are the fibre size and packing density. In the case of outdoor surfaces such as gravel, sandy soils, and agricultural land, which can be partly saturated with water, it is of direct interest to measure the degree of water saturation hydraulic permeability and pore size gradient. In the case of materials with good physiochemical properties, it is of interest to determine their internal pore surface area, porosity, and pore size scales. In this paper, the existing and newly emerging acoustic characterisation methods are discussed in terms of their complexity, accuracy, and sample requirements. The application of these methods relate to traditional needs to measure and predict the in-situ performance of noise control elements and outdoor surfaces, to ensure the quality control during material manufacturing process and to be able to measure non-invasively the micro-and nano-structure of porous media which is used in catalytic filters, electric capacitors and for gas storage. Parts of this paper were presented at the 22nd International Congress on Sound and Vibration in Florence.

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“…There are two well-known methods of laboratory measurement of absorption, which have been described as international standards (ISO 105034, 1996;ISO 10534, 1998;ISO 354, 2003) in providing important databases regarding test materials, i.e., the reverberation room, and the tube method. A number of studies (Kosten, 1960;Makita et al, 1968a;Makita et al, 1968b;Cummings, 1991;Iwase and Izumi, 1995;Horoshenkov et al, 2007) have been conducted in order to check the effectiveness of the standard. Nevertheless, there are still issues that remain unresolved, e.g., the difficulty of measurements in situ because similar mounting conditions are difficult to reproduce.…”

Section: Introductionmentioning

confidence: 99%

A Practical Application of Ensemble Averaged Surface Normal Impedance Measured In-Situ

Din¹,

Otsuru²,

Tomiku³

et al. 2013

Int J Automot Mech Eng

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This paper presents the application of an in situ measurement technique of sound absorption characteristics, namely the "Ensemble Averaged Method". Previously, a measurement technique of material surface normal impedance by using a twomicrophone (p-p) technique and ambient noise was proposed by some of the authors. This includes the concept of "ensemble averaged" surface normal impedance to extend the usage of the obtained values to various applications, such as architectural acoustics and computational simulations. With the development of a particle velocity (p-u) sensor, the practicality of techniques for the direct measurement of impedance becomes feasible. A concept of the ensemble averaged surface normal impedance is addressed, including a basic technique to measure it by using p-p and p-u sensors. Then, the agreements between p-p and p-u sensors are discussed and the discrepancies of absorption coefficients are shown to be small. The paper reveals the reliability, applicability and feasibility of the method throughout the investigation as an in situ measurement technique.

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Reproducibility experiments on measuring acoustical properties of rigid-frame porous media (round-robin tests)

Cited by 56 publications

References 6 publications

Review in Sound Absorbing Materials

Review in Sound Absorbing Materials

A Review of Acoustical Methods for Porous Material Characterisation

A Practical Application of Ensemble Averaged Surface Normal Impedance Measured In-Situ

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