음향창 박리에 따른 음향투과특성 연구
Study on Sound Transmission Characteristics by the Delamination of Acoustic Window
1
조회
0
다운로드
0
인용
0
참고문헌
키워드
초록
This paper investigated sound characteristics by the delamination of an acoustic window. In detail, acoustic scattering and transmission characteristics on the delaminated acoustic window were estimated using an experimental and numerical approach. The experiment results showed that acoustic wave could lose its amplitude and take phase delay when it propagates the delaminated acoustic window. The numerical results showed that scattering phenomena occur on the delamination surface. The scattering characteristics presented differently according to the delamination size in the acoustic window. It also showed that transmitted sound distortion due to delamination could cause a direction detection error of SONAR by changing the position of the main lobe and the magnitude of the side lobe. In conclusion, the delamination has to be managed during the manufacturing process of acoustic windows.
Abstract
This paper investigated sound characteristics by the delamination of an acoustic window. In detail, acoustic scattering and transmission characteristics on the delaminated acoustic window were estimated using an experimental and numerical approach. The experiment results showed that acoustic wave could lose its amplitude and take phase delay when it propagates the delaminated acoustic window. The numerical results showed that scattering phenomena occur on the delamination surface. The scattering characteristics presented differently according to the delamination size in the acoustic window. It also showed that transmitted sound distortion due to delamination could cause a direction detection error of SONAR by changing the position of the main lobe and the magnitude of the side lobe. In conclusion, the delamination has to be managed during the manufacturing process of acoustic windows.
참고문헌 (9)
- Allan, D. P, "Acoustics – an introduction to its physical principles and applications" (2019), Springer Nature
- rekhovskikh, L.M, "Waves in layered media" (1980), Academic Press
- eph. L.R, "Ultrasonic waves in solid media" (1999), Cambridge University Press
- 정우진, "소나 돔 음향창 시편 투과손실 측정", 분석 방법 고찰, 2006, pp.16(7), 729~738[DOI]
- Kerr, F. H, "The scattering of a plane wave by spherical elastic inclusion", International Journal of Engineering Science, 30(2), pp.169~186 (1992)
- Lester, W.S, "Fundamentals of ultrasonic nondestructive evaluation – a modeling approach" (2016), Springer International
- 서영수, "FRP 음향창의 음향성능 설계기법 연구", 한국소음진동공학회논문집, 21(10), pp.890~896 (2011), 한국소음진동공학회
- 신구균, "소나 음향창의 설계 인자가 난류 유동 유기 자체 소음의 전달 함수에 미치는 영향 해석", 한국소음진동공학회논문집, 23(1), pp.56~64 (2013), 한국소음진동공학회[DOI]
- Skelton, E. A, "Theoretical acoustics of underwater structures" (1997), Imperial College Press