INDONESIAN JOURNAL OF APPLIED PHYSICS
Vol 4, No 01 (2014): IJAP Volume 04 Issue 01 Year 2014

Influence of Sugar Palm Ash Fraction and Resonator Configuration on Acoustic Absorption Performance of Expose Brick

Zulfa Kamila R (Unknown)
Iwan Yahya (Unknown)
Utari U (Unknown)

Article Info

Publish Date
11 May 2016

Abstract

Sound absorption performance optimization of expose brick has been conducted in associated with the fraction of sugar palm ash in its raw material and configuration of Helmholtz resonators inside the brick structure. The testing was conducted experimentally refer to ASTM E-1050-98 standard procedure. In this case there are three variations sugar palm ash fractions of 0%, 5%, and 10%, as well as two array resonator configurations. The results showed that the brick with fraction of 10% sugar palm ash has the best sound absorption performance. As for the configuration of array identical Helmholtz resonator giving better performance improvement at low frequency span than complex resonator structure with coupled cavity where the best performance occur on(376-488) Hz frequency range with the absorption coefficient α of 0.54.

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Journal Info
INDONESIAN JOURNAL OF APPLIED PHYSICS
Website

Abbrev

ijap

Publisher

Universitas Sebelas Maret

Subject

Astronomy Energy Materials Science & Nanotechnology Physics

Description

Indonesia Journal of Apllied Physics provides rapid publication of short reports and important research in all fields of physics. Indonesia Journal of Apllied Physics publishes articles that are of significance in their respective fields whilst also contributing to the disclipline of physics as a ...