Anechoic tile has been widely used in the submarine as acoustic stealth equipment, which can reduce the reflection intensity of active sonar effectively. The intensive study on the absorption mechanisms of anechoic tile, which can be used for parameters optimization of material and structure, and anechoic tile type design for a specific region or band, has great significance in improving the survival rate and success rate of surprise attack of a submarine.
This paper aims at achieving an acoustic charac...