Pamungkas, Awang Krisnha Tirta (2017) Studi Panel Diffuser Dengan Dan Tanpa Lubang Berbentuk Square Mozaik Berbahan Dasar Tempurung Kelapa Muda. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Telah dilakukan penelitian terhadap panel diffuser dengan variasi tanpa lubang dan pemberian lubang berbentuk square mozaik berbahan dasar tempurung kelapa muda untuk mengetahui nilai koefisien absorbsi, pola sebaran dan frekuensi resonansi. Pengukuran dilakukan di laboratorium Instrumentasi Akustik Fisika ITS dengan menggunakan tabung impedansi dan ruang mati. Dari hasil analisa data dan perhitungan diperoleh bahwa tempurung kelapa muda dapat menyerap bunyi dengan baik pada frekuensi rendah dibandingkan pada frekuensi tinggi. Nilai koefisien absorbsi yang didapatkan pada frekuensi 250 Hz adalah 0,42 untuk panel tidak diberi lubang, sedangkan pada variasi pemberian lubang pada panel didapatkan nilai koefisien absorbsi 0,53. Tempurung kelapa muda juga memiliki frekuensi resonansi pada frekuensi tinggi (2000 Hz).
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Has been done research on panel diffuser with variations without holes and delivery of shaped hole square mozaik based coconut shell to know the absorption value, the scatter and frequency resonance. The experiment done in the ITS Physics Instrumentation Acoustics laboratory using a tube impedance and the anechoic room. From the data analysis and calculation obtained that young kneecap coconut able to absorb the fine at low frequency than in high frequency .The absorption coefficient a raid at the frequency of 250 hz is 0,42 to panel will not be holes , while in the hole variation on panel found the absorption 0,53 value. Coconut shell also having frequencies resonance at high frequencies ( 2000 Hz ).
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSFi 530.475 Pam s |
| Uncontrolled Keywords: | diffuser, square mozaik, tempurung kelapa, koefisien absorbsi, frekuensi resonansi. |
| Subjects: | Q Science > QC Physics |
| Divisions: | Faculty of Mathematics and Science > Physics > 45201-(S1) Undergraduate Thesis |
| Depositing User: | Awang Krisnha Tirta Pamungkas |
| Date Deposited: | 02 Feb 2018 02:43 |
| Last Modified: | 08 Mar 2019 02:29 |
| URI: | http://repository.its.ac.id/id/eprint/46557 |
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