Sound Radiation Characteristics of A Cracked Rectangular Vibrating Plate

균열을 갖는 직사각형 진동평판의 음향 방사특성

  • 김태진 (인하대학교 대학원 기계공학과) ;
  • 박종환 (인하대학교 대학원 기계공학) ;
  • 이우식 (인하대학교 기계공학과)
  • Published : 2003.09.01


This paper considers the sound radiation characteristics of a cracked rectangular vibrating plate, varying the orientation angle of a line crack. The vibration response of the cracked vibrating plate is obtained by using ANSYS, the acoustic theory based on the lumped parameter model is used to calculate radiated sound power. The radiated sound powers are computed with varying the orientation angle of the crack: i.e, 0$^{\circ}$, 45$^{\circ}$, and 90$^{\circ}$. It is found that characteristics of the radiated sound power are very closely related to the crack orientation, vibration mode and crack location.


  1. Gade, S., Ginn. K. B., Roth, O. and Brock, M.1, 'Sound Power Determination in Highly Reactive Environments Using Sound Intensity Measurements,' Proc. INTER-NOISE 83, pp. 1047-1054, 1993
  2. 이준서, 차경옥, '굴림 베어링 요소의 결함 검출시 음향 인텐시티 기술 저용에 관한 실질적인 연구,' 한국박용기관학회지, Vol. 23, No. 4, pp. 473-479, 1998
  3. 황준석, 송준영, 김승조, '타격음을 이용한 복합재료 구조물의 손상탐지법의 개발,' 한국복합재료학회, 춘계학술대회논문집, pp. 171-174, 2000
  4. Fahnline, J. B. and Koopmann, G. H., 'Numerical Implementation of the Lumped Parameter Model for the Acoustic Power Output of a Vibrating Structure,' Journal of Acoustical Society of America, Vol. 102, pp. 179-191, 1997