概述了水下吸声机理,综述了常用的吸声材料和吸声结构以及国内外水下吸声材料的研究和应用现状.归纳出水下吸声材料的3个发展方向,即理论计算指导材料设计、提高材料低频吸声性能和增加频宽及提高材料耐水压和耐蚀性.指出具有高强度、高耐热性、高耐蚀性和良好吸声效果的金属多孔材料,特别是夹心复合吸声结构具有良好的发展前景.
The acoustic absorbing principle is introduced in this paper. Research and application development of the underwater sound absorbing materials and structures at home and abroad are summarized. The development of underwater sound absorbing materials aims at three directions: theoretical calculation guiding materials design, higher low frequency sound absorbing performance and wide frequency hand, higher water-pressure and corrosion resistance.Porous metal materials, especially sandwich composite structure with high strength, heat resistance, corrosion resistance as well as nice sound absorbing performance will have extensive prospect.
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