| 聚（偏二氟乙烯-三氟乙烯）压电圆管水听器 |
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| 引用本文： | 周利生, 许欣然. 聚（偏二氟乙烯-三氟乙烯）压电圆管水听器[J]. 声学学报, 2021, 46(6): 1250-1259. DOI: 10.15949/j.cnki.0371-0025.2021.06.045 |
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| 作者姓名： | 周利生 许欣然 |
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| 作者单位： | 声纳技术重点实验室 杭州 310023;杭州应用声学研究所 杭州 310023 |
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| 摘 要： | 提出了高灵敏度压电共聚物圆管水听器设计方法,论述了聚(偏二氟乙烯-三氟乙烯)[P (VDF-TrFE)]材料结构与压电特性的关系,利用解析法和有限元法,分析了多振动模式耦合特性对压电共聚物圆管水听器灵敏度响应的影响规律,仿真分析了圆管水听器的耐静水压特性和噪声特性,与相同结构的压电陶瓷和压电均聚物水听器相比,压电共聚物圆管水听器低频段灵敏度分别可提高20 dB和5 dB以上,研制了尺寸为Φ14 mm × 55 mm的压电共聚物圆管水听器样品,经测试,在10 Hz~1 kHz频段内水听器灵敏度响应达到-181.8 dB±1 dB,等效自噪声压低于零级海况海洋环境噪声,与理论模型结果有良好的一致性。结果表明,该设计显著提升了圆管水听器的低频接收灵敏度,并为其耐静水压性能提升提供了思路。
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| 关 键 词： | 压电共聚物 P (VDF-TrFE) 圆管水听器 灵敏度响应 低自噪声特性 |
| 收稿时间： | 2021-09-29 |
| 修稿时间： | 2021-10-20 |
A piezoelectric P(VDF-TrFE) cylindrical hydrophone |
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| ZHOU Lisheng, XU Xinran. A piezoelectric P(VDF-TrFE) cylindrical hydrophone[J]. ACTA ACUSTICA, 2021, 46(6): 1250-1259. DOI: 10.15949/j.cnki.0371-0025.2021.06.045 |
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| Authors: | ZHOU Lisheng XU Xinran |
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| Affiliation: | 1. Science and Technology on Sonar Laboratory, Hangzhou 310023;2. Hangzhou Applied Acoustics Research Institute, Hangzhou 310023 |
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| Abstract: | The design method of high-sensitivity piezoelectric copolymer cylindrical hydrophone was presented.The relationship between the material structure of poly(vinylidene fluoride-co-trifluoroethylene)[P(VDF-TrFE)] and its piezoelectric characteristics was discussed.Utilizing analytic method and finite element method,the influence of the multimode coupling properties on the sensitivity response of the piezoelectric copolymer cylindrical hydrophone was analyzed,while the hydrostatic pressure resistance and noise characteristics were simulated and analyzed.The piezoelectric copolymer cylindrical hydrophone outperformed the piezoelectric ceramic hydrophone and the piezoelectric homopolymer hydrophone of the same structure in sensitivity in low frequency range by 20 dB and 5 dB,respectively.The piezoelectric copolymer hydrophone sample with the dimension of Φ14 mm ×55 mm was eventually fabricated.The pressure sensitivity response of the copolymer cylindrical hydrophone was measured to be as high as-181.8 dB ± 1 dB in the frequency range of 10 Hz~1 kHz.Moreover,in this frequency range its equivalent self-noise pressure was lower than the sea ambient noise at zero level sea state.The measured results matched well with the theoretical model.The results revealed that this design significantly improved the receiving sensitivity of cylindrical hydrophones in low frequency range,and provided ideas to enhance their hydrostatic pressure resistance. |
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| Keywords: | Piezoelectric copolymer P(VDF-TrFE) Cylindrical hydrophone Sensitivity response Low self-noise characteristic |
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