An experimental work by using statistical energy analysis is performed to identify the magnitude of vibrational input power injected to a structural element in high frequency region. In addition, transmission paths of vibrational power flow between source and receiver structures are identified and rank-ordered through SEA. Re-estimated and measured input power is compared with each other and error analyses of estimated values are carried out with respect to frequency, bandwidth, and energy of subsystems. The transmission paths of a test model are analyzed by the proposed path analysis concept and compared with previous path analysis method. The results show that SEA can be successfully applied in getting source input information on condition that prerequisites of SEA are satisfied, and the validity of re-estimation technique of power input should be based on the experimental error analysis for involved structures. The proposed path analysis technique gives information on major power transmission paths and it would be used as a promising tool for noise control in vibro-acoustic systems.
