| 拖曳线列阵声纳护套用聚氨酯的声学性能及材料体系 |
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| 引用本文： | 张道礼,陈晓平,周东祥,龚树萍.拖曳线列阵声纳护套用聚氨酯的声学性能及材料体系[J].功能材料,2002,33(2):145-147,151. |
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| 作者姓名： | 张道礼 陈晓平 周东祥 龚树萍 |
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| 作者单位： | 华中科技大学电子科学与技术系,湖北,武汉,430074 |
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| 基金项目： | 国防科工委军品配套研制基金资助项目 (2 0 0 0 ) |
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| 摘 要： | 流噪声是影响拖曳线列阵声纳信噪比的一种主要自噪声。首先通过介绍湍流边界层脉动压力的产生及其对护套的作用方式，探讨了拖曳线列阵声纳护套内流噪声的产生机理；其次通过分析聚氨酯（PU）的透声和降噪机理，讨论了PU的声学性能；最后从PU单一体系和互穿聚合物网络（IPN）两个方面，分析比较了护套用PU的材料体系。
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| 关 键 词： | 拖曳线列阵声纳 护套 聚氨酯 声学性能 材料体系 流噪声 微相分离 |
| 文章编号： | 1001-9731(2002)02-0145-03 |
Acoustic properties and material systems of polyurethanefor use as towed linear sonar jacket |
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| ZHANG Dao li,CHEN Xiao ping,ZHOU Dong xiang,GONG Shu ping.Acoustic properties and material systems of polyurethanefor use as towed linear sonar jacket[J].Journal of Functional Materials,2002,33(2):145-147,151. |
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| Authors: | ZHANG Dao li CHEN Xiao ping ZHOU Dong xiang GONG Shu ping |
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| Abstract: | Flow noise is one of main self noise which has an importan effect on the signal to noise rate of towed linear sonar.At first the production mechanism of flow noise inside towed linear sonar jacket was studied by introductioning the production of turbulent boundary layer fluctuant pressure and its effect way on jacket. Then the acoustic properties were discussed by analyzing the mechanism of minimizing flow noise while maximizing transmission of signal. In the end the material systerms of PU were analyzed and compared by two sides of unitary system and interpenetrating polymer network of polyurethane. |
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| Keywords: | towed linear sonar flow noise polyurethance (PU) microphase separation |
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