# Preliminary study on Acoustical Characteristics of Sago Midrib Composite
> Kusno A.

URL kanonis: https://discover.unhas.ac.id/publications/preliminary-study-on-acoustical-characteristics-of-sago-midrib-composite
Jurnal / Konferensi: Iop Conference Series Materials Science and Engineering
Tahun terbit: 2019
DOI: https://doi.org/10.1088/1757-899X/619/1/012043
ISSN: 17578981
Citations: 5

## Authors
- Kusno A.

## Abstract
Abstract This research is a preliminary study on the use of sago midrib as an acoustic material. This study aims to determine the sago as acoustic material by measuring the absorption coefficient using (impedance tube method) of 100 Hz-1.6 KHz frequencies. The results of measurement were analyzed and compared with common acoustic material available on market as reference. From the measurement of the sago midrib composite, absorption coefficient has fluctuated from low to high frequencies as the absorption coefficient of reference material is found to be more stable.

## Keywords
- Attenuation coefficient
- Materials science
- Composite number
- Acoustic impedance
- Noise reduction coefficient
- Acoustics
- Absorption (acoustics)
- Composite material
- Tube (container)
- Optics
- Physics
- Ultrasonic sensor
- Porosity

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Sumber: Discover Unhas — RIMS Universitas Hasanuddin.
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