http://chineseinput.net/에서 pinyin(병음)방식으로 중국어를 변환할 수 있습니다.
변환된 중국어를 복사하여 사용하시면 됩니다.
- 中文 을 입력하시려면 zhongwen을 입력하시고 space를누르시면됩니다.
- 北京 을 입력하시려면 beijing을 입력하시고 space를 누르시면 됩니다.
RISS 인기검색어
- 검색키워드
- 저자 : 홍석윤(Suk-Youn Hong) (검색결과 2 건)
- 무료
- 기관 내 무료
- 유료
-
고부가가치선 선실의 소음 저감용 복합패널의 차음특성 해석
권현웅(Hyun-Wung Kwon),홍석윤(Suk-Youn Hong),길현권(Hyun-Gwon Kil),김화묵(Hwa-Muk Kim),송지훈(Jee-Hun Song) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.3
Recently, as the importance of the interior noise in a ship cabin has risen, ship builders have becomeconcerned about the use of noise reduction panels to reduce cabin noise. The results of previous researches have been based on analytical and experimental methods using simple sandwich panels. However, panel structures are becoming more complex to improve the transmission loss. Thus, researches that analyze the transmission loss of a panel are reaching the limit of study. This paper reports on research that was performed to determine the sound transmission characteristics of multi-complex panels applicable to high value-added vessels. It presents comparisons between analytical methods and experimental results by using a mini-reverberant chamber with components of sound attenuation panels, including the core and surface materials. The sound transmission loss of multi-complex panels are also analyzed in terms of the influences of the inside perforate plates and air gap thickness on the attenuation. Finally, the multi-complex panel with the highest noise attenuation is proposed based on the analysis results and experimental results in mini-reverberant chamber, which wereverified using a real-size reverberant chamber.
-
권현웅(Hyun-Wung Kwon),홍석윤(Suk-Youn Hong),송지훈(Jee-Hun Song) 한국해양공학회 2012 韓國海洋工學會誌 Vol.26 No.4
Recently, the underwater radiated noises generated from large commerical ships have become a globally important issue. Countries with large ports and environmental protection organizations demand strict safety guidelines in relation to underwater radiated noise. In this paper, the coupled PFFE/PEBE method in used to investigate the vibration and underwater radiated noise of a commercial ship. PFFEM is employed to analyze the vibrational responses of the commercial ship, and PFBEM is applied to analyze the underwater radiation noise. The vibrational energy of the structure is treated as an acoustic intensity boundary condition of PFBEM to calculate the underwater radiation noise. Numerical simulations are presented for the commercial ship under various frequencies, and reliable results are obtained.
DBpia연관 검색어 추천
이 검색어로 많이 본 자료
활용도 높은 자료
