摘要
对声波损耗机理及聚氨酯(PUR)水声吸声材料的吸声机理进行了分析,综述了PUR水声吸声材料体系和声学结构设计的研究进展和应用,其中重点介绍了传统PUR水声吸声材料、微粒增强PUR水声吸声材料、发泡PUR水声吸声材料、空腔共振式吸声结构、阻抗渐变式吸声结构和耐压式吸声结构,最后指出了目前PUR水声吸声材料存在的不足并展望了其在未来的发展趋势。
The mechanism of sound wave loss and the acoustic absorption mechanism of polyurethane underwater soundabsorbing materials were analyzed. The research progress and application of polyurethane underwater sound-absorbing material system and acoustic structure design were summarized. The traditional polyurethane underwater sound-absorbing material,particleenhanced polyurethane underwater sound-absorbing material,foaming polyurethane underwater sound-absorbing material,air cavity-resonance sound-absorbing structure,impedance-graded sound-absorbing structure and pressure-resistance sound-absorbing structure were mainly introduced. Finally,the problems and development directions of polyurethane underwater sound-absorbing material were pointed and summarized.
引文
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