함정 윙브릿지 과소음 현상에 대한 폐기관 연돌 소음의 영향성 연구
Study on Influence of Exhaust Pipe Funnel Noise on Wing Bridge in Naval Vessel
0
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
The aim of this study was to investigate the influence of diesel engine exhaust pipe system's noise on the wing bridge's loud noise phenomenon. In wing bridge, exhaust noise is considered the major noise source than wall transmitted noise. However, low frequency band noise is considered to be generated by structure's vibration, which is transmitted from diesel engine and exhaust pipe system. To mitigate such noise phenomenon, first, the allowable limit of exhaust noise (or noise limit on wing bridge area) is to be established. In addition, a silencer with enough noise attenuating performance is to be designed according to the allowable limit. Second, funnel walls and structures are to be reinforced robustly to avoid easy-to-vibrate condition. Lastly, proper vibration isolation methods are to be applied to all supporting points of the exhaust system without missing any points.
Abstract
The aim of this study was to investigate the influence of diesel engine exhaust pipe system's noise on the wing bridge's loud noise phenomenon. In wing bridge, exhaust noise is considered the major noise source than wall transmitted noise. However, low frequency band noise is considered to be generated by structure's vibration, which is transmitted from diesel engine and exhaust pipe system. To mitigate such noise phenomenon, first, the allowable limit of exhaust noise (or noise limit on wing bridge area) is to be established. In addition, a silencer with enough noise attenuating performance is to be designed according to the allowable limit. Second, funnel walls and structures are to be reinforced robustly to avoid easy-to-vibrate condition. Lastly, proper vibration isolation methods are to be applied to all supporting points of the exhaust system without missing any points.
참고문헌 (7)
- Choong-Young Choi, "Development of silencer for low frequency exhaust noise", Proc. of Korean Soc. for Noise and Vibration Engineering Spring Conference, pp.596~597 (2011)
- 박성종, "종단 반사 효과를 이용한 중속 엔진 저주파수 배기음의 소음 저감", 대한기계학회논문집 A, 45(7), pp.615~621 (2021), 대한기계학회
- International Maritime Organization, "Adoption of the code on noise levels on board ships", IMO MSC, 337(91), pp.17~ (2012)
- Korean Register, "소음 및 진동 지침", 7~ (2017)
- American Bureau of Shipping, "Guidance notes on onboard ship noise analysis", 19~ (2018)
- Lloyd's Register, "Rules and Regulations for the Classification of Naval Ships, Vol.3 Pt.2 Ch.1", 2~ (2011)
- Kuk-Su Kim, "Study on noise reduction of living quarter due to exhaust gas pipe of the diesel engine of offshore plant", Proc. of the Korean Society for Noise and Vibration Engineering Conference, pp.189~190 (2014)