【摘要】 改进的1-3(1-3-2)型压电复合材料由1-3压电复合材料与陶瓷基底沿陶瓷极化方向串联而成,其不仅具有与1-3复合材料相同的优点,而且克服了1-3复合材料遇热和受压容易变形等缺点。利用改进的1-3型压电复合材料制作的圆柱型水声换能器在直径为70mm时,其谐振频率为72kHz;发射电压响应为139dB;在20～60kHz频率范围内接受电压灵敏度为-212(起伏±4dB)。换能器水平方向具有基本均匀的指向性,垂直方向波束宽度为12°。更多还原

【Abstract】 The modified 1-3 piezocomposites were prepared in order to improve the stability of underwater acoustic transducers.The composite consists of 1-3 ceramic/epoxy composite and ceramic plate with series pattern.The cylinder transducer array made of modified 1-3 composite was fabricated.The performance of the transducer was investigated.The resonance frequency is 72kHz when the diameter of the transducer is 85mm.The transmitting voltage response reached 139dB at 72kHz,the receiving sensitivity was(-212±4)dB in the frequency range of 20 to 60kHz,the directivity response was even in horizontal direction and the beam width was 12° in vertical direction.更多还原