MULTIPLE-LEAF SOUND ABSORBERS WITH MICROPERFORATED PANELS: AN OVERVIEW
MULTIPLE-LEAF SOUND ABSORBERS WITH MICROPERFORATED PANELS: AN OVERVIEW
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发表时间：
2010-08
影响因子：
1.7
通讯作者：
K. Sakagami;Motoki Yairi;M. Morimoto
中科院分区：
文献类型：
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作者：
K. Sakagami;Motoki Yairi;M. Morimoto
自从Maa的开创性工作以来，已经研究了具有不同材料的各种配置的多叶微穿孔板（MPP）吸声器。多叶结构主要用于获得宽带吸声。提出了一种由两个微穿孔板和一个位于其间的空气腔组成的无后壁的双层微穿孔板空间吸声结构。DLMPP是一种宽带吸声器，在低频下也有效。然而，MPP仍然很昂贵。如果这种结构中的MPP之一可以用另一种材料（例如渗透膜）代替，则它可以是有效的并且也是经济的。因此，作者一直在探索各种多叶结构，包括MPP和渗透膜。本文综述了我们在多叶多点吸声结构方面的研究工作，包括DLMPP、三叶MPP空间吸声体、MPP与渗透膜组合的空间吸声体。它还包括一个多叶结构与MPP和膜支持的刚性墙。
Since the pioneering work by Maa, multiple-leaf microperforated panel (MPP) sound absorbers of various configurations with different materials have been studied. Multiple-leaf structures are primarily employed to obtain wideband sound absorption. The authors have proposed double-leaf microperforated panel space absorbers (DLMPP), which consist of two MPPs and an air-cavity in-between, without a back wall. A DLMPP is a wideband sound absorber, which is also effective at low frequencies. However, an MPP is still expensive. If one of the MPPs in such a structure can be substituted with another material, such as a permeable membrane, it can be effective and also economical. The authors, therefore, have been exploring various multiple-leaf structures including both MPPs and permeable membranes. This paper gives an overview of our studies on such multiple-leaf sound absorbing structures with MPPs, including a DLMPP, a triple-leaf MPP space absorber, a space sound absorber consisting of an MPP and a permeable membrane. Also it includes a multiple-leaf structure with MPPs and membranes backed by a rigid wall.