3D printed acoustic metamaterial for noise reduction

Noise pollution has always been a problem that situated in our daily lives especially area where unnecessary sound produces by traffic and Mass Rapid Transport (MRT) can cause irritation to the residents nearby. Helmholtz resonator is a largely use acoustic passive damper to help attenuate the acous...

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Main Author: Teo, Zue Kang
Other Authors: Zhou Yufeng
Format: Final Year Project
Language:English
Published: 2018
Subjects:
Online Access:http://hdl.handle.net/10356/75549
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Institution: Nanyang Technological University
Language: English
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spelling sg-ntu-dr.10356-755492023-03-04T18:37:25Z 3D printed acoustic metamaterial for noise reduction Teo, Zue Kang Zhou Yufeng School of Mechanical and Aerospace Engineering DRNTU::Engineering::Mechanical engineering Noise pollution has always been a problem that situated in our daily lives especially area where unnecessary sound produces by traffic and Mass Rapid Transport (MRT) can cause irritation to the residents nearby. Helmholtz resonator is a largely use acoustic passive damper to help attenuate the acoustic pressure wave to a certain frequency for sound damping purposes. In this report the author will present a simulation study and design of a 3D printed sound reduction panel which make use of a modified Helmholtz resonator neck by embedding a coplanar spiral tube in place of a Helmholtz resonator neck which will help reduce the overall thickness of the Helmholtz resonator yet keeping the acoustic damping properties as a Helmholtz resonator. The sound transmission loss characteristic of a coplanar spiral tube Helmholtz resonator are first studied from a frequency range of 20 hz to 10 Khz with varying geometry such as the cavity volume, spiral cross-sectional dimensions and spiral length. Design of the prototype will then be experimented base on the transmission loss plot from the simulation data. Discussion of the simulation results, design of the sound reduction panel, drawings of the prototype are presented in this report. Bachelor of Engineering (Mechanical Engineering) 2018-06-01T08:14:59Z 2018-06-01T08:14:59Z 2018 Final Year Project (FYP) http://hdl.handle.net/10356/75549 en Nanyang Technological University 57 p. application/pdf
institution Nanyang Technological University
building NTU Library
continent Asia
country Singapore
Singapore
content_provider NTU Library
collection DR-NTU
language English
topic DRNTU::Engineering::Mechanical engineering
spellingShingle DRNTU::Engineering::Mechanical engineering
Teo, Zue Kang
3D printed acoustic metamaterial for noise reduction
description Noise pollution has always been a problem that situated in our daily lives especially area where unnecessary sound produces by traffic and Mass Rapid Transport (MRT) can cause irritation to the residents nearby. Helmholtz resonator is a largely use acoustic passive damper to help attenuate the acoustic pressure wave to a certain frequency for sound damping purposes. In this report the author will present a simulation study and design of a 3D printed sound reduction panel which make use of a modified Helmholtz resonator neck by embedding a coplanar spiral tube in place of a Helmholtz resonator neck which will help reduce the overall thickness of the Helmholtz resonator yet keeping the acoustic damping properties as a Helmholtz resonator. The sound transmission loss characteristic of a coplanar spiral tube Helmholtz resonator are first studied from a frequency range of 20 hz to 10 Khz with varying geometry such as the cavity volume, spiral cross-sectional dimensions and spiral length. Design of the prototype will then be experimented base on the transmission loss plot from the simulation data. Discussion of the simulation results, design of the sound reduction panel, drawings of the prototype are presented in this report.
author2 Zhou Yufeng
author_facet Zhou Yufeng
Teo, Zue Kang
format Final Year Project
author Teo, Zue Kang
author_sort Teo, Zue Kang
title 3D printed acoustic metamaterial for noise reduction
title_short 3D printed acoustic metamaterial for noise reduction
title_full 3D printed acoustic metamaterial for noise reduction
title_fullStr 3D printed acoustic metamaterial for noise reduction
title_full_unstemmed 3D printed acoustic metamaterial for noise reduction
title_sort 3d printed acoustic metamaterial for noise reduction
publishDate 2018
url http://hdl.handle.net/10356/75549
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