插入微孔板的双叶隔板声传输损失的正常发生率

Q2 Physics and Astronomy

Advances in Acoustics and Vibration Pub Date : 2013-09-04 DOI:10.1155/2013/216493

A. Putra, A. Y. Ismail, R. Ramlan, R. Ayob

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引用次数: 18

摘要

双叶隔板以其机械强度和轻质等优点在工程结构中得到了广泛的应用。在噪声控制方面，双层叶片也是一种有效的噪声屏障。不幸的是，在低频时，由于面板和面板之间的空气之间的耦合，声音传输损失显著减少。本文研究了在双叶隔板内插入微孔板对系统传声损失性能的影响。提出了MPP的插入，以提供一种卫生的双叶隔音材料，取代板间传统的磨料多孔材料。研究发现，在质量-空气-质量谐振频率处，如果MPP靠近实心面板，传输损耗会有所改善。推导了声载荷法向入射的数学模型。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Normal Incidence of Sound Transmission Loss of a Double-Leaf Partition Inserted with a Microperforated Panel

A double-leaf partition in engineering structures has been widely applied for its advantages i.e. in terms of its mechanical strength as well as its lightweight property. In noise control, the double-leaf also serves to be an effective noise barrier. Unfortunately at low frequency, the sound transmission loss reduces significantly due to the coupling between the panels and the air between them. This paper studies the effect of a micro-perforated panel (MPP) inserted inside a double-leaf partition on the sound transmission loss performance of the system. The MPP insertion is proposed to provide a hygienic double-leaf noise insulator replacing the classical abrasive porous materials between the panels. It is found that the transmission loss improves at the troublesome mass-air-mass resonant frequency if the MPP is located closer to the solid panel. The mathematical model is derived for normal incidence of acoustic loading.

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来源期刊

Advances in Acoustics and Vibration ACOUSTICS-

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期刊介绍： The aim of Advances in Acoustics and Vibration is to act as a platform for dissemination of innovative and original research and development work in the area of acoustics and vibration. The target audience of the journal comprises both researchers and practitioners. Articles with innovative works of theoretical and/or experimental nature with research and/or application focus can be considered for publication in the journal. Articles submitted for publication in Advances in Acoustics and Vibration must neither have been published previously nor be under consideration elsewhere. Subject areas include (but are not limited to): Active, semi-active, passive and combined active-passive noise and vibration control Acoustic signal processing Aero-acoustics and aviation noise Architectural acoustics Audio acoustics, mechanisms of human hearing, musical acoustics Community and environmental acoustics and vibration Computational acoustics, numerical techniques Condition monitoring, health diagnostics, vibration testing, non-destructive testing Human response to sound and vibration, Occupational noise exposure and control Industrial, machinery, transportation noise and vibration Low, mid, and high frequency noise and vibration Materials for noise and vibration control Measurement and actuation techniques, sensors, actuators Modal analysis, statistical energy analysis, wavelet analysis, inverse methods Non-linear acoustics and vibration Sound and vibration sources, source localisation, sound propagation Underwater and ship acoustics Vibro-acoustics and shock.