Buildings · 2022 · 22 citations · 19 references
Natural SciencesMaterials EngineeringMaterials ScienceAcousticsSolid Waste ManagementWaste ManagementAcoustic MaterialsAcoustic MeasurementAcoustic ModelingAcoustic PerformanceSound AbsorptionWaste CharacterizationAbsorber MaterialsAcoustic Material CharacterizationDensityImpedance Tube MeasurementMaterial Sound AbsorptionPorous MediaSound Absorption CoefficientSound Absorption Measurement
The paper presents the sound absorption coefficient of acoustic absorbers fabricated from natural durian husk fibers, which are currently still considered as agricultural wastes, especially in Malaysia. Samples were fabricated with different fiber densities and thicknesses and the sound absorption performance was measured using the impedance tube method. The results reveal that the durian husk fibers can have absorption coefficient of more than 0.5 above 1 kHz for a minimum thick sample of 20 mm and with minimum density of 160 kg/m3. The optimised macroscopic parameters for various densities were calculated using the inverse method employing the well-known Johnson-Champoux-Allard (JCA) model for porous material.
19
Sound absorption performance of natural kenaf fibres
Zhi Yih Lim, Azma Putra, Mohd Jailani Mohd Nor et al. · Applied Acoustics · 2017 · 200 citations
Natural Sciences, Materials Engineering, Materials Science +12
Sound absorption of extracted pineapple-leaf fibres
Azma Putra, Khai Hee Or, Mohd Zulkefli Selamat et al. · Applied Acoustics · 2018 · 152 citations