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Catharina Risti Indriyani Catharina Risti Indriyani
Department of Physics, Institut Teknologi Sepuluh Nopember, Kampus ITS-Sukolilo Surabaya
Physics

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Pengaruh Sudut Lubang pada Sonic Crystal terhadap Atenuasi dengan Bahan Pipa PVC: Gontjang Prajitno, Catharina Risti Indriyani, Suyatno Suyatno Gontjang Prajitno Gontjang Prajitno; Catharina Risti Indriyani Catharina Risti Indriyani; Suyatno Suyatno
Jurnal Fisika dan Aplikasinya Vol 16 No 1 (2020): January 2020 Edition
Publisher : Lembaga Penelitian dan Pengabdian Kepada Masyarakat, LPPM-ITS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.12962/j24604682.v16i1.6211

Abstract

In this sonic crystal research, a 1.5 " diameter and 1.1 meters long PVC pipe was used. The panel was designed to have a 3-row square configuration with a filling ratio of 0.5, several pipes are 16 for each row and each pipe was given a hole (perforation) with a radius of holes are 6 mm. The study was conducted with variations in the number of holes 2, 4, 6 and 8 holes and the direction of the angle of the sound source with holes 0, 30, 90, 150, and 1800 . optimal, where the attenuation average is -10.66 dB, while the average attenuation at 00 is -4.0 dB, at 900 is -6.7 dB, at 1500 is -4.0 dB and at an angle of 1800 of -4.4 dB. Besides, the number of holes in this study affects the attenuation of sound and shifting the frequency of resonance, the more holes in the pipe, the greater the decrease in SPL.
Co-Authors Gontjang Prajitno Gontjang Prajitno Suyatno Suyatno