Composites Research

  • 제25권5호
  • /
  • Pages.154-158
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  • 2012
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  • 2288-2103(pISSN)
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  • 2288-2111(eISSN)
한국복합재료학회 (The Korean Society for Composite Materials)
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복합시트의 구조가 흡·차음성에 미치는 영향

Effect of Structure on the Sound Absorption and Sound Transmission Loss of Composite Sheet

  • 이병찬 (한국교통대학교 환경공학과) ;
  • 김성룡 (한국교통대학교 나노고분자공학과)
  • 투고 : 2012.07.26
  • 심사 : 2012.10.24
  • 발행 : 2012.10.31
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초록

복합시트의 구조를 변화시켜 흡 차음성에 미치는 영향을 연구하였다. 폴리프로필렌 보드의 표면과 배면에 폴리에틸렌테레프탈레이트 부직포를 핫 프레스로 융착하여 복합시트를 제조하였다. 면밀도가 $0.64kg/m^2$인 부직포를 사용하여 제조한 복합시트의 흡음률은 0.1-0.2의 값을 나타내어 폴리프로필렌 보드의 흡음률에 비해 약 100~400%의 증가를 나타내었다. 폴리프로필렌 보드의 면밀도를 증가시키거나 복합시트 위에 반구형의 홈을 포함하는 경우에 복합시트의 투과손실이 증가하였다. 평판 복합시트와 사인 파형을 가지는 복합시트의 구조를 변화시켜 만든 2가지 복합시트 구조에 따른 흡음률과 차음도의 변화를 조사하였다.

The effect of structure on the sound absorption and sound transmission loss of composite sheet was investigated. A sheet of polypropylene was bonded by hot press with nonwoven fabric sheets of polyethylene terephthalate on the top side and the back side. Absorption coefficient of composite sheet using nonwoven fabric with surface density of $0.64kg/m^2$ was 0.1-0.2. It is 100-400% improvement compare to that of polypropylene sheet. The transmission loss of composite sheet was increased with surface density of polypropylene board and introduction of hemisphere hole on the surface of sheet. Two types of composite sheet were made using flat sheet and sine wave shaped sheet and the effect of sheet structure on the transmission loss was investigated.

키워드

참고문헌

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피인용 문헌

  1. Effect of Graphite Intercalation Compound on the Sound Absorption Coefficient and Sound Transmission Loss of Epoxy Composites vol.28, pp.6, 2015, https://doi.org/10.7234/composres.2015.28.6.389