Correlation between the acoustic and porous cell morphology of polyurethane foam: Effect of interconnected porosity

Zhang, Chunhua; Li, Junqing; Hu, Zhen; Zhu, Fulong; Huang, Yudong

doi:10.1016/j.matdes.2012.04.031

Cited by 179 publications

(107 citation statements)

References 22 publications

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“…However, when present, the half open pores where considered open. This measurement method is in good agreement with the one used by Zhang et al 6 . Due to its very short depth of field, the optical microscopy is unable to capture all the open and closed pores (see Fig.…”

Section: (C) and 3(h) And Figs 4(c) And 4(h)supporting

confidence: 88%

Investigations on the sensitivity of the relationships between sound absorption characteristics and microstructure related parameters for polyurethane foams

Ouisse

Doutres

Atalla

et al. 2013

The Journal of the Acoustical Society of America

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Straightforward semi-phenomenological models have been developed for highly porous polyurethane foams to predict the macroscopic nonacoustic parameters involved in the classical Johnson-Champoux-Allard model (i.e., porosity, airflow resistivity...) from microstructure properties (i.e, strut length, strut thickness and reticulation rate). These microstructure properties are measured using sophisticated optical methods (i.e., optical microscope, SEM) and a large variability can be observed due to great complexity of the 3D microstructure; variability which also depends on the precision of the measurement device. This work investigates how the variability associated with the model inputs affects the model outputs (i.e., non-acoustic parameters, surface impedance and sound absorption coefficient). The sensitivity analysis is based on the Fourier Amplitude Sensitivity Test (FAST). It helps quantify the correlation between the input parameters and identify the parameters contributing the most to output variability, thus requiring precise measurement. This study illustrates the preponderant impact of the reticulation rate (i.e, open pore content) on acoustic performances and guides the user on the required optical measurement device.

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Section: (C) and 3(h) And Figs 4(c) And 4(h)supporting

confidence: 88%

Investigations on the sensitivity of the relationships between sound absorption characteristics and microstructure related parameters for polyurethane foams

Ouisse

Doutres

Atalla

et al. 2013

The Journal of the Acoustical Society of America

View full text Add to dashboard Cite

show abstract

“…Kim et al [39], also observed an improvement of the tensile strength for electrospun nanofibrous mats by addition of fly ash particles. The increase of the compressive strength and modulus of HPU composites resulted from the higher-density and smaller cell size [40]. These results show that the density of porous composites affects their mechanical strength, where a small maximal load deflection of Foam1 ( Table 2).…”

Section: Physical Properties Of Foam Compositesmentioning

confidence: 79%

Enriching composite hydrophilic polyurethane foams with PAC to enhance adsorption of phenol from aqueous solutions

Massalha

Brenner

Sheindorf

et al. 2015

Chemical Engineering Journal

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“…We discuss the structure-property relationships in more detail in Chapter 6. In general, open cell foams exhibit good absorption capacity for water and good acoustic damping properties (Zhang et al, 2012) compared to closed cell foams.…”

Section: Closed and Open Cellmentioning

confidence: 99%

Introduction

Gladysz¹,

Chawla²

2015

Voids in Materials

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Correlation between the acoustic and porous cell morphology of polyurethane foam: Effect of interconnected porosity

Cited by 179 publications

References 22 publications

Investigations on the sensitivity of the relationships between sound absorption characteristics and microstructure related parameters for polyurethane foams

Investigations on the sensitivity of the relationships between sound absorption characteristics and microstructure related parameters for polyurethane foams

Enriching composite hydrophilic polyurethane foams with PAC to enhance adsorption of phenol from aqueous solutions

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