Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam

Authors

  • Amalia Ma'rifatul Maghfiroh Universitas Bojonegoro

DOI:

https://doi.org/10.22219/jemmme.v9i1.32597

Abstract

Noise is an unpleasant/undesirable sound. Apart from noise, environmental problems are often faced by the community in the form of organic and inorganic waste resulting from several small/large industrial activities. Organic waste often encountered is young coconut fiber from activities in traditional markets. Paper waste comes from teaching and learning activities/offices. Styrofoam waste is included in the category of inorganic waste, which is very difficult to decompose, so it has a bad impact on the environment. Based on this, a composite was made from coconut fiber, paper and styrofoam so that it could be used as a sound absorber. Cylindrical composite specimens were made with different variations in composition and analyzed the differences in sound dampening ability in various compositions. The sound absorption capacity of the composite was measured at frequencies of 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1,000 Hz, 2,000 Hz and 4,000 Hz. The composite acoustic test results obtained for samples A, B and C showed that the highest absorption energy was 49.57 dB at a frequency of 750 Hz for sample C. Meanwhile, the lowest absorption energy was 1.15 dB at a frequency of 500 Hz for sample A. The sound absorption coefficient values ​​were obtained for all variations. The frequencies of samples A, B and C have good absorption coefficient values, namely ≥ 0.2. The lowest absorption coefficient value was 2.01 at a frequency of 750 Hz for sample C and the highest was 46.67 at a frequency of 500 Hz for sample A.

Downloads

Download data is not yet available.

References

Alamsyah I, Maghfiroh A, Ashari F. Pembuatan Komposit berbahan Dasar Sabut Kelapa dan Serbuk Kayu sebagai Peredam Suara. J Tek Ind. 2023;26(2):36–48.

Brahmakumar, M., Pavithran, C., and Pillai, R.M., Coconut fiber reinforced polyethylene composites such as effect of natural waxy surface layer of the fiber on fiber or matrix interfacial bonding and strength of composites, Elsevier, Composite Science and Technology, 65 pp. 563-569, 2005.

Cahyono. E.S.H, 2010. Noice Absroption Coeffisien Komposot Jerami Padi dengan Matriks Alami. Tugas Akhir. Jurusan Teknik Mesin. UII. Yogyakarta.

Gabriel J.F. 2001. Fisika Lingkungan. Jakarta: Hipokrates. hal 53-60.

Giancoli, DC. 2001. Fisika. Edisi Kelima. Jilid Dua. Terjemahan: Hanum, Yuhilza. Jakarta: Erlangga. hal 411-415.

Gibson, Ronald F. 1994. Principles Of Composite Material Mechanics. New York : Mc Graw Hill,Inc

Ismail L., Mahzan S., Zaidi AMA. 2010. Sound Absorption of Arenga Pinnata Natural Fiber. World Academy of Science, Engineering and Technology. p 67

Jacobs James A Thomas F, Engineering Materials Technology (Structures, Processing, Properties and Selection 5 th ) New Jersey Columbus, Ohio, 2005.

Latifa. N. L. 2015. Fisika Bangunan 2. Cetakan 1. Jakarta: Griya Kreasi.

Maghfiroh MA. , Farahdiansari PA. 2024. Utilization of Coconut Fiber and Corn Cob Waste as Noise Reducers. Journal of Energy Mechanical, Material and Manufacturing Engineering, 83-92.

Miasa IM. 2004. Penelitian Sifat-Sifat Akustik dari Bahan Kertas dan Plastik sebagai Penghalang Kebisingan. Media Teknik. No 1 Tahun XXVI. hal 68-71.

Nurmuhamad, Arief. 2013. Merubah Sampah Menjadi Uang. http://jurnalilmiahtp.blogspot.com/2013/11/merubah-sampah-menjadi-uang.html. diakses tanggal 15 Juni 2018.

Rimantho D., Yulianti NH., Pane EA., 2018, Pemanfaatan Limbah Organik dan Anorganik Sebagai Material Akustik, UP2M Press, Jakarta.

Rimantho D., Yulianti NH., Pane EA., 2019, Utilization Of The Organic And Inorganic Solid Waste as Acoustic Material, ARPN Journal of Engineering and Applied Sciences, 14 (8), 1502-1506

Satyarno, I., 2004, Seminar Nasional Inovasi Teknologi Bahan Bangunan untuk Meningkatkan PAD dan Beberapa Kemajuan untuk Menyelesaikan Permasalahan Bidang Teknik Sipil, Jurusan Teknik Sipil, Fakultas Teknik, Universitas Gadjah Mada, Yogyakarta.

Yulianti N, Rimantho D, Herzanita A, Sandi A. Analisis Varian Material Komposit Peredam Suara Dengan Memanfaatkan Limbah Serabut Kelapa Muda , Serbuk Kayu Dan Styrofoam. 2021;(0325077501).

Downloads

Published

2024-07-24

How to Cite

Maghfiroh, A. M. (2024). Sound absorption coefficient from composites made from coconut fiber, paper, and styrofoam . Journal of Energy, Mechanical, Material, and Manufacturing Engineering, 9(1). https://doi.org/10.22219/jemmme.v9i1.32597

Issue

Section

Articles