Kusuma, Novanto Adisasmita (2018) Studi Pengaruh Jarak Antar Bilah Panel Difuser Berbahan Kayu Terhadap Pola Hamburan Dan Koefisien Absorbsi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Dalam ruangan sering dijumpai panel dengan bentuk unik yang biasanya menempel di dinding, atap dan digantung. Panel tersebut sering dikenal dengan material akustik yang berfungsi sebagai kontrol akustik ruang : absorbsi dan refleksi bunyi. Sifat absorbsi dan refleksi menjadi sangat penting dalam mengatasi cacat akustik. Pada penelitian dibuat panel berbahan kayu dengan variasi jarak dan lebar antar bilah 2 cm, 4 cm, 6 cm, 8 cm dan 10 cm. Parameter yang diukur pada penelitian ini antara lain pola hamburan dan koefisien absorbsi. Dari hasil pengukuran, perhitungan dan analisa data diperoleh nilai koefisien absorbsi panel dengan jarak 4 cm memiliki nilai 0,49 pada frekuensi 125 Hz. Nilai alfa pada panel 2 cm dengan frekuensi 125 Hz sebesar 0,18. Nilai tersebut lebih kecil dibandingkan dengan panel yang lainnya, karena bunyi mampu melewati celah yang lebih sempit. Panel dengan variasi jarak 6 cm, 8 cm dan 10 cm memiliki nilai alfa dan pola hamburan yang sama. Panel dengan variasai jarak 8 cm dan 10 cm memiliki pola hamburan yang merata untuk semua frekuensi.
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Indoors common panels with unique form which is usually stuck to the walls, roof and hung. The Panel is often known as acoustic material that serves as a control Acoustics: absorption and reflection of the sound. The absorption and reflection properties to be very important in overcoming the disability. On research-based panes made of wood with a variation of the distance between the bar and the width of 2 cm, 4 cm, 6 cm, 8cm and 10 cm. Parameters measured in this study, among others, the absorption coefficients and scattering patterns. From the results of the measurement, calculation and analysis of data obtained coefficient the absorption panel with
a distance of 4 cm has a value of 0.49 at 125 Hz. frequency of Alpha Values on the panel 2 cm with 125 Hz frequency of 0.18. The value is smaller than the other panel, because the sound is able to pass through a narrower gap. Panel with the variation of the distance of 6 cm, 8 cm and 10 cm alpha value and the same scattering patterns.
Panel variations with a distance of 8 cm and 10 cm has a scattering pattern which is equitable for all frequencies
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSFi 534 Kus s-1 3100018075082 |
| Uncontrolled Keywords: | material akustik; koefisien alfa; kayu; pola hamburan; acoustic material; coefficient alpha; timber; scattering pattern |
| Subjects: | Q Science > QC Physics Q Science > QC Physics > QC162 Adsorption and absorption |
| Divisions: | Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Novanto Adisasmita Kusuma |
| Date Deposited: | 04 Apr 2018 03:20 |
| Last Modified: | 15 Sep 2020 04:28 |
| URI: | http://repository.its.ac.id/id/eprint/50578 |
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