Sound Absorption Performance Of Natural Fiber Composite From Chrome Shave And Coffee Silver Skin

Monazzam, Mohammadreza and Putra, Azma and Abdi, Debelo Dugasa and Taban, Ebrahim and Golbabaei, Farideh and Khadem, Monireh (2021) Sound Absorption Performance Of Natural Fiber Composite From Chrome Shave And Coffee Silver Skin. Applied Acoustics, 182. pp. 1-10. ISSN 0003-682X

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Abstract

This paper presents the sound absorption performance of natural fiber composites developed from chrome shave (CS) and coffee silver skin (CSS). Twelve test samples of thickness 30 mm and 50 mm were fabricated with different fiber sizes and fiber ratios and by maintaining the density of the samples by 150 kg/m3. Normal incidence sound absorption coefficient spectra were measured in an impedance tube. Absorption coefficient spectra were predicted using the Johnson-Allard-Champoux (JCA) model using best fit values of tortuosity and the two characteristic lengths together with measured values of porosity and flow resistivity. The results revealed that the CS-CSS composite had average absorption coefficient of 0.95 above 1 kHz for a thickness of 30 mm and 50 mm. 'The predictions and data are in good agreement up to 6 kHz.

Item Type:	Article
Uncontrolled Keywords:	Coffee Silver Skin, Chrome Shave, Waste Recycling, Sound Absorption Coefficient, JCA Model, Natural Fiber Composite
Divisions:	Faculty of Mechanical Engineering
Depositing User:	Norfaradilla Idayu Ab. Ghafar
Date Deposited:	20 Dec 2021 15:11
Last Modified:	20 Dec 2021 15:11
URI:	http://eprints.utem.edu.my/id/eprint/25371
Statistic Details:	View Download Statistic

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