On Woven Fabric Sound Absorption Prediction

• Autorzy: Prasetiyo I. , Desendra G. , Hermanto M. N. , Adhika D. R.

Identyfikatory

DOI

10.24425/aoa.2018.125164

• Języki publikacji: EN

Abstrakty

EN

For building applications, woven fabrics have been widely used as finishing elements of room interior but not in particular aimed for sound absorbers. Considering the micro perforation of the woven fabrics, they should have potential to be used as micro-perforated panel (MPP) absorbers; some measurement results indicated such absorption ability. Hence, it is of importance to have a sound absorption model of the woven fabrics to enable us predicting their sound absorption characteristic that is beneficial in engineering design phase. Treating the woven fabric as a rigid frame, a fluid equivalent model is employed based on the formulation of Johnson-Champoux-Allard (JCA). The model obtained is then validated by measurement results where three kinds of commercially available woven fabrics are evaluated by considering their perforation properties. It is found that the model can reasonably predict their sound absorption coefficients. However, the presence of perturbations in pores give rise to inaccuracy of resistive component of the predicted surface impedance. The use of measured static flow resistive and corrected viscous length in the calculations are useful to cope with such a situation. Otherwise, the use of an optimized simple model as a function of flow resistivity is also applicable for this case.

Słowa kluczowe

EN

woven fabric; prediction model; sound absorber; building applications

• Wydawca: Instytut Podstawowych Problemów Techniki PAN ; Komitet Akustyki PAN ; Polskie Towarzystwo Akustyczne
• Czasopismo: Archives of Acoustics
• Rocznik: 2018
• Tom: Vol. 43, No. 4
• Strony: 707--715
• Opis fizyczny: Bibliogr. 31 poz., fot., rys., tab., wykr.

Twórcy

autor

Prasetiyo I.

• Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Ganesa 10, Bandung 40132, Indonesia

autor

Desendra G.

• Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Ganesa 10, Bandung 40132, Indonesia

autor

Hermanto M. N.

• Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Ganesa 10, Bandung 40132, Indonesia

autor

Adhika D. R.

• Engineering Physics, Faculty of Industrial Technology, Institut Teknologi Bandung, Ganesa 10, Bandung 40132, Indonesia
• National Research Center for Nanotechnology, Institut Teknologi Bandung, Ganesha 10, Bandung 40132, Indonesia

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Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2019).