MICRO-PERFORATED PANELS AND SOUND ABSORPTION

被引：0

作者：

Stremtan, Florina-Anca ^{[1
]}

Garai, Massimo ^{[2
]}

Lupea, Iulian ^{[1
]}

机构：

[1] Tech Univ Cluj Napoca, Dept Mech Syst Engn, 103-105 Muncii Blvd, Cluj Napoca 400641, Romania

[2] Univ Bologna, Dept Energet Nucl & Environm Control Engn, I-40136 Bologna, Italy

来源：

ACTA TECHNICA NAPOCENSIS SERIES-APPLIED MATHEMATICS MECHANICS AND ENGINEERING | 2012年 / 55卷 / 03期

关键词：

impedance; micro-perforated panels; sound absorption; wood;

D O I：

暂无

中图分类号：

O3 [力学];

学科分类号：

08 ; 0801 ;

摘要：

Micro-perforated panels (MPP) are used more and more for sound absorption. The characteristics of micro-perforated panels have been studied widely by a lot of researchers and it is recognized that this kind of absorbers is the next generation acoustical materials due to fiber-free nature and attractive design. Helmholtz's principle is underlying MPP structures that present o series of advantages. In this study two kinds of wood MPP placed at different distances from the rigid back-plate are presented. Their sound absorption coefficient has been measured in the impedance tube and compared with the one that resulted from a mathematical model.

引用

页码：549 / 554

页数：6

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