Study on the Sound Absorbing Characteristics of Recycled Materials -Based on used Paper and Cigarette Filters-

재생 자원의 흡음특성에 관한 연구 -폐지와 담배필터를 중심으로-

  • 최창하 (선문대학교 환경공학과) ;
  • 조해용 (선문대학교 환경공학과) ;
  • 이주민 (선문대학교 환경공학과)
  • Published : 2001.02.01

Abstract

In this study, development of new sound absorbent which is safety, economical and efficient with using recycled materials is tried for substitution of commercial sound absorbent. The sound absorbents, used in this investigation, were made of used paper or filters of cigarette butts. With the variation of the material densities, sound absorptions of materials were measured. The impedance tube method is used for measuring sound absorption coefficient of the new sound absorbent materials. The measured frequency range was 250Hz to 4000Hz in 1/3 octave band. The sound absorption coefficient of the commercial materials and that of the materials synthesized in the our laboratory show almost same value.

Keywords

sound absorbent;recycled materials;impedance tube;sound absorption coefficient

References

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