一种改进型1-3-2压电复合材料的研究  

Study of an Improved 1-3-2 Type Piezoelectric Composite Material

作　　者：井苏杰 于肇贤[1] 王宏伟[1] JING Sujie;YU Zhaoxian;WANG Hongwei(College of Science,Beijing University of Information Science and Technology,Beijing 100192,China)

机构地区：[1]北京信息科技大学理学院,北京100192

出　　处：《压电与声光》2024年第2期223-226,共4页Piezoelectrics & Acoustooptics

基　　金：国家自然科学基金资助项目(61771060);北京市教委科研计划科技重点基金资助项目(KZ202111232050)。

摘　　要：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。High-quality piezoelectric transducers require high electromechanical coupling coefficients and sensitivity.Based on the conventional 1-3-2 type piezoelectric composite material,an improved 1-3-2 type piezoelectric material 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 electromechanical coupling coefficient of the sensitive elements of the improved 1-3-2 piezoelectric material are analyzed by finite-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 piezoelectric 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.

关 键 词：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 

分 类 号：TN384[电子电信—物理电子学] TB565.1[交通运输工程—水声工程]