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一种改进型1-3-2压电复合材料的研究

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高质量的压电换能器需要具备较高的机电耦合系数和灵敏度.该文在传统型 1-3-2 压电复合材料的基础上提出了一种改进型 1-3-2 压电材料,提高了压电换能器的机电耦合系数和换能器的接收灵敏度.通过有限元仿真分析了不同间距对改进型 1-3-2 压电材料敏感元件的谐振频率、反谐振频率及机电耦合系数的影响,并与传统 1-3-2 型压电复合材料进行了对比.结果表明,与传统型 1-3-2 压电复合材料相比,在相同间距条件下,改进型压电材料的机电耦合系数约大 0.03.制做的 3 种不同间距改进型压电材料表明,间距为 1 mm的改进型压电材料的机电耦合系数较大,约为 0.68.
Study of an Improved 1-3-2 Type Piezoelectric Composite Material
High-quality piezoelectric transducers require high electromechanical coupling coefficients and sensitiv-ity.Based on the conventional 1-3-2 type piezoelectric composite material,an improved 1-3-2 type piezoelectric mate-rial is proposed to enhance the electromechanical coupling coefficient and receiving sensitivity of the piezoelectric transducer.The effects of different spacings on the resonance frequency,anti-resonance frequency,and electrome-chanical coupling coefficient of the sensitive elements of the improved 1-3-2 piezoelectric material are analyzed by fi-nite-element simulation and compared with those of the traditional 1-3-2 piezoelectric composite material.The results show that the electromechanical coupling coefficient of the improved piezoelectric material is larger than that of the traditional 1-3-2 piezoelectric composite material with same spacing by approximately 0.03.Three improved piezoe-lectric materials with different spacings were fabricated.The results show that the improved piezoelectric material with a spacing of 1 mm has a large electromechanical coupling coefficient of about 0.68.

different spacing 1-3-2 type piezoelectric composite materialimproved typeresonant frequencyan-ti-resonant frequencyelectromechanical coupling coefficient

井苏杰、于肇贤、王宏伟

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北京信息科技大学 理学院,北京 100192

不同间距 1-3-2型压电复合材料 改进型 谐振频率 反谐振频率 机电耦合系数

国家自然科学基金北京市教委科研项目科技重点基金

61771060KZ202111232050

2024

10.11977/j.issn.1004-2474.2024.02.016

压电与声光
四川压电与声光技术研究所

压电与声光

CSTPCD北大核心
影响因子：0.357
ISSN：1004-2474
年,卷(期)：2024.46(2)
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