CAJ | 학술논문

通过阻抗管声学分析仪测试针刺非织造材料的吸声性能,探讨了纤维种类及细度、厚度、容重、空腔对材料吸声性能的影响,以及吸声性能与透气性的关系.结果表明,材料厚度与容重是影响吸声性能的主要因素.材料厚度与吸声系数成正线性相关,容重与吸声系数呈现明显的二次曲线变化规律.其它因素对吸声效果也有一定影响.
통과조항관성학분석의측시침자비직조재료적흡성성능,탐토료섬유충류급세도、후도、용중、공강대재료흡성성능적영향,이급흡성성능여투기성적관계.결과표명,재료후도여용중시영향흡성성능적주요인소.재료후도여흡성계수성정선성상관,용중여흡성계수정현명현적이차곡선변화규률.기타인소대흡성효과야유일정영향.
Several needle-punched nonwoyen samples are tested through impedance tube methods and some factors affecting the sound absorption properties are discussed,such as fiber type,fiber size,thickness,bulk density,air gap and air permeability.The research results indicate that the thickness and bulk density play more important roles.The relation between thickness and sound absorption coefficient is a positive linear correlation and that between bulk density and sound absorption coefficient is a quadratic correlation under different frequencies.