# Coconut Leaf Midribs as an Acoustical Panel-Feasibility Study through Impedance Tube Method
> Kusno A.

URL kanonis: https://discover.unhas.ac.id/publications/coconut-leaf-midribs-as-an-acoustical-panel-feasibility-study-through-impedance
Jurnal / Konferensi: Iop Conference Series Materials Science and Engineering
Tahun terbit: 2020
DOI: https://doi.org/10.1088/1757-899X/875/1/012007
ISSN: 17578981
Citations: 3

## Authors
- Kusno A.

## Abstract
Abstract This research aims to determine sound absorption coefficients of absorber materials making from coconut leaf midribs. Absorber material has been made with different arrangement and thickness. Nine samples have been made which consists of 3 configurations and each configuration consists of 3 thicknesses. Absorption coefficients were measured by using impedance tube method. The experiment results show that coconut leaf midrib is up to standard for absorber material according to ISO 11654 with α over 0.15. The absorption coefficient obtained by the whole sample is in the range 0.02 to 0.65. Fluctuating values are affected by differences forms and thicknesses. Absorber materials that have been made are also compatible with marketed products.

## Keywords
- Tube (container)
- Absorption (acoustics)
- Materials science
- Attenuation coefficient
- Electrical impedance
- Composite material
- Range (aeronautics)
- Sample (material)
- Noise reduction coefficient
- Acoustics
- Structural engineering
- Engineering
- Optics
- Chemistry
- Electrical engineering
- Chromatography
- Physics
- Porosity

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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