| 党长久,杨玉瑞,李明轩.扭转压电复合材料及其应用[J].,1997,16(2):7-13 |
| 扭转压电复合材料及其应用 |
| Torsional piezocomposite materials and their applications |
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| 中文摘要: |
| 本文描述了轴向-切向连通的圆柱2－2型压电复合材料．用PZT／环氧树脂制作的普通2－2型压电复合材料可以拼接成一种具有扭转振动的压电复合材料．这种压电复合材料可以作为圆柱2－2型压电复合材料的近似．本文还给出两组这种拼接型压电材料晶片的参数，用这种压电材料制作了产生扭转振动的换能器，测试了换能器的波形、频谱特性和偏振特性，指出了使用适当的高通滤波器可以抑制横波中的径向模，分析了接收波列中纵波抑制较强的原因． |
| 英文摘要: |
| A cylindrical 2-2 piezocomposite with axial and tangential connectivity is de scribed. The torsional piezocomposite materials, which approximate the cylindrical 2-2 piezocomposites, are made by piecing together the ordinary 2-2 piezocomposite of PZT/e-poxy. Two such blocks are fabricated, and their characteristics are measured. From them, transducers with torsional modes are then built, of which the waveforms, spectra and acoustic polarization are tested. A proper high-pass filter is used to eliminate the radi al mode in the transverse waveform. The reason for the weakness of the compressional wave in the received waveform is analyzed. |
| DOI：10.11684/j.issn.1000-310X.1997.02.003 |
| 中文关键词: 压电复合材料 超声换能器 横波换能器 扭转切变模 |
| 英文关键词: Piezocomposites Ultrasonic transducers Transverse wave transducers Torsional shear modes |
| 基金项目:国家自然科学基金 |
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