The acoustic concealing performance is significant for navy submarines and has arisen a great deal of interest for a long time. It generally adds a layer of anechoic tile on a submarine’s surface to improve its concealing ability, which is an important technique and has been widely used. The key part of the anechoic tile is the underwater acoustic absorption material, which is generally a type of viscoelastic polymer containing various particles and/or macro acoustic structures. In this area, to imp...
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