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Preliminary study on absorption characteristic of a human body according to the amount of clothing worn for developing standard test dummy

표준더미 개발을 위한 착의량에 따른 인체의 흡음특성 기초연구

Yong-Hee Kim1
,
Sung-Chan Lee2*
김 용희1
,
이 성찬2*
1한국건설생활환경시험연구원 건축환경재료센터
2영산대학교 건축플랜트학과
*교신저자. *Corresponding Author. 
31 July 2017. pp. 254-260
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Abstract

The purpose of this study is to evaluate the sound absorption characteristics of a human body according to the amount of clothing worn by using reverberation method measurement method for developing standard test dummy, which can be used for testing absorption of occupied audience chair. Test method was based on the previous study (Conti et al., 2004), each experiment is conducted in the reverberation room and a subject wearing clothes is standing in that chamber. In this experiment, the sound absorption area of each frequency band according to the wearing of various material clothing was measured. As a result of measurements, the average sound absorption area of the whole frequency band was 0.25 m2 - 0.48 m2 in case of a subject not wearing outer clothes, and 0.38 m2 - 0.98 m2 in case of wearing of outerwear. Polyester tops by showing the maximum value, the highest characteristics in the 800 Hz to 1 kHz band among the rest of fiber materials. The outer jacket made of the wool and cotton materials show a higher absorption area as the frequency increases to the higher frequency band. The change of the sound absorption area according to the clothing amount was divided by the thermal resistance (clo) of the worn clothes and the weight per body surface area.

Keywords
Sound absorption performance
Human body absorption
Auditorium seat
Standard dummy
Amount of cloth

본 연구는 만석 객석의자 등의 흡음특성 시 활용될 수 있는 표준더미 개발을 위한 기초연구로서 착의량에 따른 인체의 흡음특성을 잔향실법 측정방법을 이용하여 평가하였다. 측정방법은 기존 연구(Conti et al., 2004)에 따라 잔향실 중앙에 1인의 피험자가 서 있는 조건에서, 다양한 소재의 의복착용에 따른 주파수 대역별 흡음면적을 측정하였 다. 측정 결과, 겉옷을 제외한 상하의를 착용하였을 때 전주파수대역 평균 흡음면적은 피험자에 따라 0.25 m2 - 0.48 m2 의 분포를 보였고, 외투 착용에 따라 0.38 m2 - 0.98 m2의 분포를 보였다. 섬유소재에 따라 폴리에스터 류의 겉옷은 800 Hz - 1 kHz 대역에서 피크 특성을 보였고, 모나 면 소재의 겉옷은 고주파수 대역으로 갈수록 흡음면적이 높아지는 특성 을 보였다. 착의량에 따른 흡음면적의 변화는 착용한 의복의 열저항(clo)과 체표면적당 무게로 구분하여 비교하였다.

키워드
흡음성능
인체흡음
공연장 객석
표준더미
착의량
References
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 36
  • No :4
  • Pages :254-260
  • Received Date : 2017-02-21
  • Revised Date : 2017-03-16
  • Accepted Date : 2017-07-31
  • DOI :https://doi.org/10.7776/2017.36.4.254
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