Abstract
A purpose of this research is to explain the relation of the sound and vibration mode by experimental modal analysis. A cylindrical shell that has clipping in the center part is used as test piece in this experiment. The natural frequencies and vibration mode of the test piece are obtained from impact hammer testing. When an impact point is a node of vibration mode, it decreases the sound pressure level of corresponding peak frequency. As the results, it is clear that the vibration mode correlates with the radiated sound.
