Koefisien Serap Bunyi Papan Partikel Dari Bahan Serbuk Kayu Kelapa

Abstract

Telah dilakukan penelitian untuk mengetahui karakteristik koefisien serap bunyi papan partikel dari bahan dasar serbuk kayu kelapa. Papan partikel dibuat dengan mencampur serbuk kayu kelapa dengan tepung kanji, dicetak, dan dikeringkan. Sampel berbentuk silinder, dibuat sebanyak 4 buah dengan tebal : (1,15 cm), (1,95 cm), (2,95 cm) dan (4,05 cm). Nilai koefisien serap bunyi sampel diukur menggunakan alat ukur koefisien serap bunyi. Hasil penelitian menunjukkan, ketebalan sampel mempengaruhi nilai koefisien serap bunyi (α) yaitu pada frekuensi 600 Hz. Koefisien serap bunyi (α) semakin menurun dengan bertambahnya ketebalan papan partikel (sampel penyerap).The research had been doing to know characteristic sound absorption coefficient of particle board which made from base material coconut wood dust. The particle board made by mix of coconut wood dust with cornstarch then pressed and dried. The particle board as a sample is cylinder with diameter 8,5 cm. The thick of four samples are 1,15 cm, 1,95 cm, 2,95 cm, and 4,15 cm. The sound absorption coefficient have measured by sound absorption coefficient instruments. The result is sample thickness has influence to sound absorption coefficient values such as at 600 Hz frequencies. Sound absorption coefficients is decreasing to the increasing of the particle board thickness (absorber sample).

The Effectiveness of Styrofoam Mixtures in Lightweight Concrete Walls

“…The utilization of smartphones for environmental noise measurement, though in its initial phases, holds considerable promise for future applications, particularly in monitoring crowd-generated noise [44]. The first aspect is that these devices represent an affordable yet robust sensor network, widely used and capable of operating on a large scale.…”

Pengujian Kerapatan Dan Kadar Air Serta Pengujian Koefisien Absorbsi Untuk Mengetahui Pengaruh Variasi Ketebalan Dan Frekuensi Terhadap Papan Akustik Berbahan Dasar Daun Pandan Duri (Pandanus Tectorius)

“…Penelitian oleh Ulfayanti (2016) dengan menggunakan bahan sandwich kertas koran dan gabus dengan perekat sagu, diperoleh nilai koefisien absorbsi yaitu 0,1. Penelitian yang dilakukan oleh Suhaemin, dkk (2013), menggunakan bahan dasar serbuk kayu kelapa dalam pembuatan papan partikel dan diperoleh nilai koefisien yaitu 0,1.…”

Potential of Soundproof Wallpaper Based on Indigenous Materials

“…Although the optimum value for dried banana midrib is obtained from the composition of 100% banana midrib, the silencer from the combination of banana midrib and soybean dregs has the advantage of providing high economic value for people who use this material as a sound absorber. Not only that because of its application on the walls of the room, the artistic aspect of a room is also considered (Thamrin et al, 2013). The presence of soybean pulp in this composite wallpaper gives a better appearance to the final product because it looks smoother or smoother than the composition of 100% banana midrib fiber.…”

“…One method to reduce noise in a room is to install acoustic panels or sound-absorbing material on the partition wall and ceiling (Thamrin et al, 2013). Materials that are often used today are those derived from synthetic materials such as glasswool.…”