Experimental study of the absorption characteristics of some porous fibrous materials

被引：151

作者：

Wang, CN ^{[1
]}

Torng, JH ^{[1
]}

机构：

[1] Natl Taiwan Univ, Dept Naval Architecture & Ocean Engn, Taipei, Taiwan

来源：

APPLIED ACOUSTICS | 2001年 / 62卷 / 04期

关键词：

D O I：

10.1016/S0003-682X(00)00043-8

中图分类号：

O42 [声学];

学科分类号：

070206 ; 082403 ;

摘要：

The sound absorption characteristics of a porous fibrous material, that is manufactured and used in Taiwan, is investigated. The flow resistivity and the absorption coefficient are the important parameters that are determined. The measured flow resistivity of the glass and rock wool samples were scattered in a wider range and usually greater than previously reported in the literature. This means that the manufacturing quality control needs further improvement. Additionally, the characteristic impedance of the porous material is estimated by the model of Allard et al and consequently the normal impedance and sound absorption coefficient is obtained. (C) 2001 Elsevier Science Ltd. All rights reserved.

引用

页码：447 / 459

页数：13

共 15 条

[1]

Allard J.F., 1993, Propagation of sound in porous media, DOI [10.1002/9780470747339, DOI 10.1002/9780470747339]

[2] ACOUSTICAL PROPERTIES OF PARTIALLY RETICULATED FOAMS WITH HIGH AND MEDIUM FLOW RESISTANCE [J].

ALLARD, JF ;

AKNINE, A ;

DEPOLLIER, C .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1986, 79 (06) :1734-1740

[3] NEW EMPIRICAL EQUATIONS FOR SOUND-PROPAGATION IN RIGID FRAME FIBROUS MATERIALS [J].

ALLARD, JF ;

CHAMPOUX, Y .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1992, 91 (06) :3346-3353

[4] ACOUSTICAL CHARACTERISTICS OF RIGID FIBROUS ABSORBENTS AND GRANULAR-MATERIALS [J].

ATTENBOROUGH, K .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1983, 73 (03) :785-799

[5] FLOW RESISTANCE INFORMATION FOR ACOUSTICAL DESIGN [J].

BIES, DA ;

HANSEN, CH .

APPLIED ACOUSTICS, 1980, 13 (05) :357-391

[6] THEORY OF PROPAGATION OF ELASTIC WAVES IN A FLUID-SATURATED POROUS SOLID .2. HIGHER FREQUENCY RANGE [J].

BIOT, MA .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1956, 28 (02) :179-191

[7] DYNAMIC TORTUOSITY AND BULK MODULUS IN AIR-SATURATED POROUS-MEDIA [J].

CHAMPOUX, Y ;

ALLARD, JF .

JOURNAL OF APPLIED PHYSICS, 1991, 70 (04) :1975-1979

[8] TRANSFER-FUNCTION METHOD OF MEASURING IN-DUCT ACOUSTIC PROPERTIES .1. THEORY [J].

CHUNG, JY ;

BLASER, DA .

JOURNAL OF THE ACOUSTICAL SOCIETY OF AMERICA, 1980, 68 (03) :907-913

[9]

Delany M. E., 1970, Applied Acoustics, V3, P105, DOI 10.1016/0003-682X(70)90031-9

[10] THEORY OF DYNAMIC PERMEABILITY AND TORTUOSITY IN FLUID-SATURATED POROUS-MEDIA [J].

JOHNSON, DL ;

KOPLIK, J ;

DASHEN, R .

JOURNAL OF FLUID MECHANICS, 1987, 176 :379-402

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