Sari, Rista Dwi Permana (2010) Studi Tentang Pengaruh Prosentase Lubang Pada Panel Terhadap Daya Absorpsi Bunyi. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Seringkali dalam ruang-ruang tertutup digunakan bahan absorpsi
yang melapisi dinding-dinding ruang, tripleks adalah salah satu
diantaranya. Untuk meningkatkan daya absorpsi tripleks biasanya
diperforasi. Pada tugas akhir ini dilakukan pengujian terhadap tripleks
dengan ketebalan 6 mm dengan berbagai persentase lubang. Pengujian
pertama dilakukan untuk tripleks tanpa perforasi dengan diberi jarak 4
cm dari lantai, kemudian tripleks di beri lubang dengan persentase
lubang 1 % dengan diameter lubang 5 mm dan 10 mm. Selanjutnya
tripleks diperforasi dengan prosentase lubang 3 % dengan diameter
lubang 10 mm. Perlakuan selanjutnya adalah memberi rockwool di
antara tripleks yang telah diperforasi dengan lantai. Dari hasil
pengukuran diperoleh bahwa nilai koefisien absorpsi tripleks meningkat
apabila tripleks tersebut diperforasi. Begitu pula apabila persen
perforasi pada tripleks ditingkatkan, maka nilai koefisien absorpsi
tripleks akan membesar. Selain itu diperoleh pula bahwa tidak hanya
persen perforasi saja yang mempengaruhi nilai koefisien absorpsi
tripleks tetapi dipengaruhi juga oleh diameter lubang.
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It is frequent that absorption materials are used to coat
room walls. One of them is plywood. To increase the power of
absorption, the plywood is usually perforated. At this last term
task, an experiment to plywood with the thickness 6 mm in variety
of perforation percentages is carried out. The first experiment
was conducted to the plywood without perforation in the distance
4 cm from the floor. The plywood is perforated at 1% with the
perforation diameter 5 mm and 10 mm. Then it is perforated at
3% with the perforation diameter 10 mm. The next step is to put
rockwool between the perforated plywood and the floor. The
result of measuring shows that the value of plywood absorption
coefficient increased when the plywood is perforated. Also when
the percentage of plywood perforation is increased\ the value of
plywood absorption coefficient will increase. In addition, it is
proved that not only perforation percentage influence the value of
plywood absorption coefficient but also perforation diameter
does.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Additional Information: | RSFi 534 Sar s |
| Uncontrolled Keywords: | Koefisien absorpsi, Perforasi, Tripleks, Waktu dengung, Sabine, Eyring |
| Subjects: | Q Science > QC Physics > QC162 Adsorption and absorption Q Science > QC Physics > QC221 Acoustics. Sound |
| Depositing User: | Mr. Tondo Indra Nyata |
| Date Deposited: | 04 Feb 2022 02:42 |
| Last Modified: | 04 Feb 2022 03:19 |
| URI: | http://repository.its.ac.id/id/eprint/92804 |
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