Sound absorption performance of underwater anechoic coating in plane wave normal incidence condition. (April 2019)

• Record Type: Journal Article
• Authors: Zhang, Z; Li, L; Huang, Y; Huang, Q
• Is Part Of: IOP conference series. Volume 522(2019)
• Publication Date: 2019-04
• Subjects: Materials science -- Periodicals; 620.1105
• DOI: 10.1088/1757-899X/522/1/012001
• Languages: English
• ISSNs: 1757-8981

Abstract

Abstract: On account of the theory of non-uniform waveguide and the wave propagation theory in layered media, a complete theoretical model is established for predicting the sound absorption performance of multi-layer underwater composite anechoic coating. Furthermore, the correctness of the theoretical calculation is verified by the finite-element simulation results. Then, the velocity nephograms corresponding the three absorption peak frequencies of the overburden are analyzed to reveal the sound-absorbing mechanism.