Targeted sound attenuation capacity of 3D printed noise cancelling waveguides
Targeted sound attenuation capacity of 3D printed noise cancelling waveguides
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DOI：
10.1016/j.apacoust.2019.03.008
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发表时间：
2019-08-01
影响因子：
3.4
通讯作者：
Arjunan, Arun
中科院分区：
文献类型：
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作者：
Arjunan, Arun
该研究探索了3D打印声音消除波导的创建，可以根据几何形状为选定的频率进行定制。这些波导中的衰减潜力通过实验测量的吸声（α）和传输损耗（TL）来表征。这样做是为了评估在被动声消除结构的发展中的几何控制波导的潜力。利用Herschel-Quincke-Arjunan（HQA）波导模型，采用选择性激光熔化（SLM）在尼龙-12中制造几何复杂波导。将波导的衰减与散装尼龙-12材料进行比较，以隔离基于材料的影响。结果表明，HQA波导的性能可以作为长度，直径和波导弯曲度的函数进行控制。因此，在正确的参数下，在设计频率下可以实现α（0.96、0.80、0.61和0.98）和TL（65.59%、30.15%、53.36%和95.28%）的显著改善。所提出的方法可用于开发可定制的波导，利用声波干涉的原理，用于一系列应用，包括建筑物墙壁，隔音屏障和吸收面板。(C)2019爱思唯尔有限公司版权所有。
The study explores the creation of 3D printed sound cancelling waveguides that can be customised for selected frequencies as a function of geometry. The potential for attenuation in these waveguides is characterised through experimentally measured acoustic-absorption (alpha) and Transmission Loss (TL). This was done to evaluate the potential of geometry-controlled waveguides in the development of passive sound cancelling structures. Geometrically complex waveguides to exploit the Herschel-Quincke-Arjunan (HQA) waveguide model manufactured in Nylon-12 using Selective Laser Melting (SLM) are presented. The attenuation of the waveguides was compared to the bulk Nylon-12 materials to segregate the material-based influence. The results showed that the performance of HQA waveguides can be controlled as a function of length, diameter and waveguide-tortuosity. Accordingly, under right parameters significant improvement in alpha (0.96, 0.80, 0.61 and 0.98) and TL (65.59%, 30.15%, 53.36% and 95.28%) can be achieved at the design frequency. The proposed methodology can be used to develop customisable waveguides exploiting the principles of acoustic wave interference for a range of application including building walls, noise barriers and absorptive panels. (C) 2019 Elsevier Ltd. All rights reserved.