Textile Science and Engineering (한국섬유공학회지)

The Korean Fiber Society (한국섬유공학회)
권호 표지

Theoretical Modeling and Experimental Fitness on Sound Absorption Characteristics of Nonwoven Fabrics

부직포 흡음특성의 이론 모델링과 실험 적합성

  • 이윤응 (삼성정밀화학(주) 기술개발센터) ;
  • 주창환 (충남대학교 공과대학 섬유공학과)
  • Published : 2005.12.01
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Abstract

Nonwoven fabrics which have three dimensional microporous structure have been widely used for noise control in the civil and architecture fields. In this study, the sound absorption properties of the nonwoven fabrics produced by different manufacturing conditions were investigated using an impedance tube method. For the purpose of substitution of conventionally used sound absorber materials with polyester nonwovens, a theoretical model based on the microporous structure of nonwovens was established to predict the sound absorption coefficient(NAC) of nonwoven materials. In conclusion, it was found that the NAC significantly depended on the fiber fineness, web orientation and nonwoven thickness. The nonwovens composed of fine fiber, randomly oriented web and which have higher thickness showed definitely higher NAC than those of the opposite cases. Furthermore, the theoretical model established for the NAC of nonwovens was in good agreement with the experimental results, especially in the high frequency region.

Keywords

References

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