学术论文

      1-1-3型压电复合材料的振动模态研究

      Vibration modes of 1-1-3 piezoelectric composites

      摘要:
      对1-1-3型压电复合材料进行了振动形态的分析.1-1-3型压电复合材料选用PZT-5H、硅橡胶和环氧树脂制备而成.从制备的两组样品的实验证明该复合元件相比传统的1-3型压电复合材料具有较高的机电耦合系数和较低的声阻抗.通过PSV-400型激光测振仪测量其振动形态,发现其中压电陶瓷柱的振动为主动振动,模态为电场平行于长度方向的纵向伸缩模态.该结构的复合元件充分发挥了压电柱本身的压电性能,进而提高了整个元件的压电性能,使得该复合元件更适合应用于水声换能器.
      Abstract:
      The vibration modes of 1-1-3 composites made from PZT-5H,silicone rubber and epoxy resin were analyzed.Two groups of experimental samples were prepared. It is found that the composites have higher electromechanical coupling coefficient and lower acoustic impedance.The PSV-400 type laser vibrometer was used to measure the vibration shape.The measured results show that the vibration amplitude of the piezoelectric ceramic column is much bigger than that of the silicone rubber and epoxy resin columns.The vibration mode of the piezoelectric ceramic column is the k33 mode.The composite material of the structure can fully exert the piezoelectric properties of the piezoelectric cylinder,improve the piezoelectric properties of the whole element,and the vibration mode is more favorable for the composite element to be used in the underwater transducer.
      Author: MI Xuhui QIN Lei LIAO Qingwei
      作者单位: 北京信息科技大学传感器重点实验室,北京,100101
      刊 名: 振动与冲击 ISTICEIPKU
      年,卷(期): 2018, 37(1)
      分类号: TH212 TH213.3
      在线出版日期: 2018年5月15日
      基金项目: 国家自然科学基金,北京市属高校青年拔尖人才项目