Acoustic radiation from an elastic baffled rectangular plate covered by a decoupling coating and immersed in a heavy acoustic fluid

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Authors
  1. Foin, O.
  2. Berry, A.
  3. Szabo, J.
Corporate Authors
Defence Research Establishment Atlantic, Dartmouth NS (CAN)
Abstract
The vibroacoustic behavior of an elastic, simply supported rectangular plate covered by a locally reacting decoupling layer supporting thickness deformation is presented. The model simulates the vibration and acoustic response of the system immersed in water and subjected to a point force disturbance. A simplified version of the theory is derived in the limiting case of a large decoupling (low mechanical impedance of the layer/high frequency). An appropriate vibratory indicator, representative of the acoustic attenuation provided by the decoupling treatment, and independent of the structure dimensions, is also investigated from the perspective of small-scale laboratory characterization.
Keywords
Decoupling;Vibro-acoustics;Acoustic radiation;Acoustic intensity;Radiated noise;Decoupling coating;Resonant structures
Date of publication
01 May 1997
Number of Pages
13
DSTKIM No
CA010177
CANDIS No
514688
Format(s):
Hardcopy;Document Image stored on Optical Disk

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