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Tuesday, July 9 • 10:30 - 13:00
RESEARCH ON THE CONDITION CLUSTERING FOR UNDERWATER RADIATION NOISE EVALUATION OF DOUBLE-RIBBED CYLINDRICAL SHELL

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To reduce the error while evaluating the radiation noise of ship with operational transfer path analysis method, an optimized method of ships' vibration transfer path analysis that based on condition clustering is proposed. Firstly, it constructs a complete acoustical clustering feature space with wavelet packet energy coefficient ratio, which can express good local property of noise in both time and frequency domains. This paper identifies and classifies the working condition through clustering analysis, establishes the transfer function database, thus evaluat-ing radiation noise by selecting the matched transfer feature function after matching working condition. Experiments with scaled cabin model show that the evaluation error of 1/3 octave radiation noise is less than 3dB, and verify the feasibility of operational transfer path analysis based on condition clustering.


Tuesday July 9, 2019 10:30 - 13:00 EDT
St-Laurent 3, Board 07-A
  T01 Ac. meas. & instrum., SS01 Snd & vibr measur & analys

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