To address the high-frequency and broadband requirements of the sonar system for the transducers,a high-frequency broadband transverse stacked-type transducer was developed.The transducer effectively extends the operating bandwidth of the transducer through various methods such as reducing the quality factor and multi-mode coupling.Simulation was carried out for the single-layer 1-3-2 composites and transverse stacked composites using finite element analysis software.The variation was obtained in resonance frequency and bandwidth of the single-layer 1-3-2 composites.The dimensions were also optimized for the transverse stacked composites based on the simulation results to ensure its operating frequency in the high-frequency range.The transverse stacked transducer was fabricated by a special preparation process.The tested transmitting voltage of the transducer is up to 158 dB,and the-3 dB bandwidth is up to 70 kHz,and the-3 dB beam opening angle is 11° at the resonant frequency.The transverse stacked transducer achieves the goal of high-frequency and broadband operating conditions.
关键词
水声换能器/高频宽带/横向叠堆/复合材料/有限元分析
Key words
hydroacoustic transducer/high frequency broadband/transverse stacking/composite materials/finite element analysis
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