Aplikasi Styrofoam Sebagai Absorpsi Bunyi

Abstract

This study aims to determine the level of sound attenuation of Styrofoam material. This research is using a noise meter application Decibel X: dB Sound Level Meter and a sound generator as a sound source. Styrofoam as an acoustic material with a thickness of 1 cm; 1.5 cm; 2 cm; 2.5 cm ; 3 cm; 3.5 cm and 4 cm. The average absorption coefficient obtained in this study with a material thickness of 1 cm is 0.023. Then the average absorption coefficient at a thickness of 1.5 cm is 0.031. While the average absorption coefficient at a material thickness of 2 cm is 0.040. Furthermore, the average sound absorption coefficient at a thickness of 2.5 cm and 3 cm has the same value, namely 0.039. Then, the average sound absorption coefficient at a thickness of 3.5 cm and 4 cm also has the same value, which is 0.038. Based on the research that has been done, it can be concluded that sound absorption at frequencies below 1000 Hz occurs significant sound absorption. At frequencies of 200 Hz, 400 Hz, 600 Hz and 800 Hz, the average sound absorption increases from 1 cm to 3.5 cm of Styrofoam thickness. While the thickness of Styrofoam 4 cm on average did not show a significant increase in sound absorption. Styrofoam thickness of 4 cm can effectively absorb sound at a frequency of 1000 Hz only.

Pengaruh Variasi Jenis Bahan Terhadap Pengurangan Taraf Intensitas Bunyi

“…Kecenderungan ini terlihat jelas dengan membandingkan data per sentimeter (3, 4, dan 5 cm). Hal ini sejalan dengan pengukuran intensitas bunyi pada styrofoam yang berkurang seiring bertambahnya ketebalan bahan pada frekuensi tetap (Rohman et al, 2022). Sementara itu, pada karpet plastik tidak memiliki perubahan taraf intensitas bunyi yang signifikan karena tidak berpori.…”

The Effectiveness of Styrofoam Mixtures in Lightweight Concrete Walls

“…48/MNLH/11/1996 concerning noise level limits for school areas and similar environments. The effectiveness of noise reduction averaged 14% for Styrofoam with a thickness of 2 cm and 60% for Styrofoam with a thickness of 4 cm [46].…”

Pengaruh Komposisi Partikel Styrofoam dan Resin Epoksi pada Komposit Peredam Suara

“…Beberapa upaya telah dilakukan untuk mengurangi sampah styrofoam dengan memanfaatkan sebagai kerajinan yang ekonomis (Harahap, Fatah, and Mahfiana 2020;Lestari and Febrianti 2018;Sunarya 2020), material bangunan yang ramah lingkungan serta mampu meredam panas dan kebisingan yang baik (Miswar 2018;Moraes et al 2019;Nugroho et al 2019;Utami et al 2019), dan komposit peredam suara (Rohman, Yulianto, and Nurbaiti 2022;Satriyatama et al 2020). Karakteristik fisik styrofoam yang mengandung udara karena berdensitas rendah (Marina 2020), dan berpori (Aksit et al 2019;Siti and Zulfiana 2018), dapat meningkatkan kemampuannya dalam meredam kebisingan (Febrian 2020).…”