배관의 표면진동을 이용한 소음예측기법 연구

This study is on the experiment of the pipe noise due to the internal fluid. The straight pipe, the 90 0 mitred pipe, rounded 90 0 and 135 0 pipe were tested and measured the vibration and noise. In the experiment, the vibration and noise level of the straight pipe and rounded pipes show that the vibration and noise level are almost same. The 90 0 mitred pipe shows the high vibration and noise level. In the prediction of noise due to the internal flow, the use of pipe surface vibration and radiation efficiency shows good agreement with experiment result.