Porous acoustic materials are among the most frequently employed acoustic materials. This paper evaluates the acoustic performance of porous materials concerning the addition of how the fabric layout and addition of an air gap influence sound absorption coefficient at low and medium frequencies. The acoustic measurements were performed on multilayers of woven fabrics formed from different weave structures and nonwoven fabrics using an impedance tube. The result indicates that due to the different geometrical structures of woven fabric and the layout designs of multilayer fabrics, significant improvements were observed in sound absorption performance at the frequency range from 160 Hz to 3150 Hz. The air gap with a multilayer of porous material enhanced low to medium-frequency sound absorption. Furthermore, the physical fabric properties analysis of porosity using X-ray tomography indicates that the surface of a single layer of plain fabric structures is more porous than that of sateen, rib, and twill woven fabrics. The correlation between the air permeability and sound absorption coefficient (α) results indicates an inverse relationship for multilayer porous fabrics.
RenSWMengHXinFX, et al.
Sound absorption enhancement by thin multi-slit hybrid structures. Chinese Phys. Lett2015;
32: 014302.
2.
GrobyJPLagarrigueCBrouardB, et al.
Enhancing the absorption properties of acoustic porous plates by periodically embedding Helmholtz resonators. J Acoust Soc Am2015;
137: 273–280.
3.
KostajnšekKZupinŽHladnikA, et al.
Optical assessment of porosity parameters in transparent woven fabrics. Polymer2021;
13: 408.
4.
DimitrovskiK. Equivalent average diameter of pores – definition and determination. In: Book of Proceedings–12th International Scientific-Professional Symposium Textile Science and Economy, 2019, pp. 115–122.
5.
ChampouxYAllardJF.Dynamic tortuosity and bulk modulus in air‐saturated porous media. J Appl Phys1991;
70: 1975–1979.
6.
LiuXYanXLiL, et al.
Sound-absorption properties of kapok fiber nonwoven fabrics at low frequency. J Nat Fibers2015;
12: 311–322.
7.
FengL.Enhancement of low frequency sound absorption by placing thin plates on surface or between layers of porous materials. J Acoust Soc Am2019;
146: EL141–EL144.
8.
GuignouardPMeisserMAllardJF, et al.
Prediction and measurement of the acoustical impedance and absorption coefficient at oblique incidence of porous layers with perforated facings. Noise Control Eng J1991;
36: 129–135.
ChenWHLeeFCChiangDM.On the acoustic absorption of porous materials with different surface shapes and perforated plates. J. Sound Vib2000 Oct 19;
237(2):337–355.
17.
AuriaultJLBoutinC.Deformable porous media with double porosity. Quasi-statics. I: Coupling effects. Trans Porous Media1992;
7: 63–82.
18.
AuriaultJLBoutinC.Deformable porous media with double porosity. III: Acoustics. Trans Porous Media1994;
14: 143–162.
19.
AlbersBWilmańskiK.Influence of coupling through porosity changes on the propagation of acoustic waves in linear poroelastic materials. Arch Mech2006;
58: 313–325.
20.
Ghaffari MosanenzadehSNaguibHEParkCB, et al.
Design and development of novel bio-based functionally graded foams for enhanced acoustic capabilities. J Mater Sci2015;
50: 1248–1256.
21.
OhJHKimJLeeH, et al.
Directionally antagonistic graphene oxide-polyurethane hybrid aerogel as a sound absorber. ACS Appl Mater Interf2018;
10: 22650–22660.
22.
ParkJHYangSHLeeHR, et al.
Optimization of low frequency sound absorption by cell size control and multiscale poroacoustics modeling. J Sound Vibr2017;
397: 17–30.
23.
CaoLSiYWuY, et al.
Ultralight, superelastic and bendable lashing-structured nanofibrous aerogels for effective sound absorption. Nanoscale2019;
11: 2289–2298.
24.
AngelovaR.Determination of the pore size of woven structures through image analysis. Open Eng2012;
2: 129–135.
25.
SamuelBTBarburskiMWitczakE, et al.
The influence of physical properties and increasing woven fabric layers on the noise absorption capacity. Materials2021;
14: 6220.
26.
BarburskiMBlaszczakJRPawliczakZ.Influence of designs of weaves on acoustic attenuation of fabrics. J Ind Text2019;
49: 33–45.
27.
EverestFAPohlmannKC.Master handbook of acoustics, 5th ed.
New York, NY, USA:
McGraw-Hill Education, 2009, Jun 22.
28.
WitczakEJasińskaILaoM, et al.
The influence of structural parameters of acoustic panels textile fronts on their sound absorption properties. Appl Acoust2021;
178: 107964.
29.
SamuelBTBarburskiMBlaszczakJR, et al.
The influence of yarn and weave structures on acoustic materials and the effect of different acoustic signal incidence angles on woven fabric absorption possibilities. Materials2021;
14: 2814.
30.
SoltaniPZarrebiniM.The analysis of acoustical characteristics and sound absorption coefficient of woven fabrics. Text Res J2012;
82: 875–882.
31.
SoltaniPZarrebiniM.Acoustic performance of woven fabrics in relation to structural parameters and air permeability. J Text Inst2013;
104: 1011–1016.
32.
ZulkifliRNorMMIsmailAR, et al.
Effect of perforated size and air gap thickness on acoustic properties of coir fibre sound absorption panels. Eur J Sci Res2009;
28: 242–252.
33.
SeddeqHS.Factors influencing acoustic performance of sound absorptive materials. Aust J Basic Appl Sci2009;
3: 4610–4617.
34.
MuhammadMSa’atNNaimH, et al.
The effect of air gap thickness on sound absorption coefficient of polyurethane foam. Def ST Tech Bull2012;
5: 176–187.
35.
PN-EN ISO 10534-2:2003. Acoustics – Determination of Sound Absorption Coefficient and Impedance in Impedance Tubes – Transfer Function Method. Warsaw, Poland: Polish Committee for Standardization, 2003.
36.
ISO 9237:1995. Textiles – Determinations of the Permeability of Fabrics to Air. Geneva, Switzerland, 1995.
37.
ShoshaniYRosenhouseG.Noise absorption by woven fabrics. Appl Acoustics1990;
30: 321–333.
38.
LiuYLyuLGuoJ, et al.
Sound absorption performance of the poplar seed fiber/PCL composite materials. Materials2020;
13: 1465.
