ANALYSIS OF SOUND ABSORPTION OF ACOUSTIC BOARDS MADE FROM HEMPFIBER (BOEHMERIA NIVEA L. GAUD) AND EPOXY RESIN

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Published: Jun 1, 2025
DOI: https://doi.org/10.19109/6yst5229
Keywords:
Absorption Coefficient;, Acoustic Board;, Hemp Fiber

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Nurfadilah Nurfadilah
UIN Alauddin Makassar
Hernawati Hernawati
UIN Alauddin Makassar
Jumardin Jumardin
UIN Alauddin Makassar
https://orcid.org/0000-0003-0289-7571
Muh. Said L
UIN Alauddin Makassar

Abstract

This study aims to determine the effect of thickness on the absorption coefficient of hemp fiber acoustic boards with epoxy resin adhesives. The method used in this study was to analyze composite samples with 3 different compositions, namely by the ratio of hemp fiber 12 grams, 8 grams and 4 grams with the same epoxy resin for each sample, namely 80 grams. The absorption coefficient test was carried out using a glass designed as a test chamber and a Sound Level Meter as a detector. The frequency values that are used are 250 Hz, 500 Hz, 800 Hz and 1000 Hz. Based on the results of the study, it was found that of the three compositions, the highest value was obtained in composition III with 12 grams of hemp fiber, 80 grams of epoxy resin and 40 grams of the catalyst with a density value of 1.116 gr/cm3 and a thickness of 1.178 cm. The composition of the sample is capable of producing a sound absorption coefficient of 0.120 cm-1 at a frequency of 250 Hz, 0.055 cm-1 at a frequency of 500 Hz, 0.051 cm-1 at a frequency of 800 Hz, and 0.073 cm-1 at a frequency of 1000. So the addition of hemp fiber and the epoxy resin is directly proportional to the absorption coefficient. The greater the concentration of the hemp or resin used, the greater the absorption coefficient.

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How to Cite
“ANALYSIS OF SOUND ABSORPTION OF ACOUSTIC BOARDS MADE FROM HEMPFIBER (BOEHMERIA NIVEA L. GAUD) AND EPOXY RESIN”. Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) 9, no. 1 (June 1, 2025): 44–55. Accessed June 6, 2025. https://jurnal.radenfatah.ac.id/index.php/jifp/article/view/24336.
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Vol. 9 No. 1 (2025): Jurnal Ilmu Fisika dan Pembelajarannya (JIFP)
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How to Cite

“ANALYSIS OF SOUND ABSORPTION OF ACOUSTIC BOARDS MADE FROM HEMPFIBER (BOEHMERIA NIVEA L. GAUD) AND EPOXY RESIN”. Jurnal Ilmu Fisika dan Pembelajarannya (JIFP) 9, no. 1 (June 1, 2025): 44–55. Accessed June 6, 2025. https://jurnal.radenfatah.ac.id/index.php/jifp/article/view/24336.

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