A procedure to identify the noise reduction properties of panels by means of a single cabin test setup is discussed. The complexity of the sound pressure field that builds up in the acoustic volume requires the support of advanced numerical techniques allowing for the evaluation of noise and vibration performances. Numerical models are used to predict the structural dynamics and the vibro-acoustic behaviour of the tested panel. Both Finite Element and Boundary Element simulations are validated by means of the experimental tests. The proposed test methodology is mainly devoted to the case of medium and small sized lightweight panels, although generally applicable to a much wider set. An aluminium honeycomb core sandwich panel for aerospace application is investigated in the present work. Modal analyses and sound Insertion Loss tests are used to verify the structural model, which is afterwards implemented to predict the standard sound Transmission Loss of the analysed sample.
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