ACOUSTIC-IMPEDANCE AND ABSORPTION-COEFFICIENT MEASUREMENTS OF POROUS MATERIALS USED IN THE AUTOMOTIVE INDUSTRY

被引：13

作者：

SOTO, PF ^{[1
]}

HERRAEZ, M ^{[1
]}

GONZALEZ, A ^{[1
]}

DESAJA, JA ^{[1
]}

机构：

[1] UNIV VALLADOLID,ACUST & VIBRACIONES LAB,E-47011 VALLADOLID,SPAIN

来源：

POLYMER TESTING | 1994年 / 13卷 / 01期

关键词：

D O I：

10.1016/0142-9418(94)90042-6

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A comparative study of the acoustic impedance (Z(0)), the absorption coefficient (a) and the reflection coefficient (R) of sever al thermoplastic porous compounds is presented. Seven closed cell crosslinked polyolefin foams and a carpet of polypropylene staple fibres were analysed. Measurements of the commonly used polyurethane foams were also recorded to compare them with the results obtained with the above recycleable materials. The behaviour of the sound absorption in terms of the mean pore size and the type of cell (closed or open) is considered for the analysed samples.

引用

页码：77 / 88

页数：12

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