未找到相关数据
ACOUSTIC CHARACTERISTICS OF HIGH-POROSITY PERMEABLE CELLULAR MATERIALS
被引：1
作者：
BELOV, SV
ANTSIFEROV, VN
TEREKHIN, AS
BALANTSEV, SK
BEKLEMYSHEV, AM
KUNEVICH, AP
机构：
[1] Moscow High Technical Coll, USSR, Moscow High Technical Coll, USSR
来源：
SOVIET POWDER METALLURGY AND METAL CERAMICS
|
1986年
/
25卷
/
11期
关键词：
CERAMIC MATERIALS - Applications - POWDER METAL PRODUCTS - Applications - POWDER METALLURGY - Copper;
D O I：
10.1007/BF00795318
中图分类号：
TQ174 [陶瓷工业];
TB3 [工程材料学];
学科分类号：
0805 ;
080502 ;
摘要：
Experiments were carried out on specimens of various materials (copper, nickel, and a ceramic) having porosities of 0. 84, 0. 89, and 0. 96. The high-porosity permeable cellular materials are comparable in their acoustic properties to glass fiber and foam polyurethane. The key role in sound absorption is played by their structure (pore size and porosity). At a porosity of 0. 85-0. 9 the optimum pore size lies in the range 0. 5-0. 7 mm. The values of wave parameters determined in the frequency range 200-6000 Hz can be employed in calculations of sound-absorbing constructions.
引用
收藏
页码：891 / 893
页数：3
相关论文