Determination of Young’s modulus of the reduced layer of a piezoelectric RAINBOW actuator
Determination of Young’s modulus of the reduced layer of a piezoelectric RAINBOW actuator
复制标题
压电 RAINBOW 执行器还原层杨氏模量的测定
DOI：
10.1063/1.367364
复制
发表时间：
1998
影响因子：
3.2
通讯作者：
L. Cross
中科院分区：
文献类型：
--
作者：
Qing;L. Cross
减少内偏压氧化物晶片(彩虹)驱动器是一种新型的单片式压电式弯曲器件，它由一个简化的机电被动层和一个未简化的压电层组成。减阻层弹性性能的确定对于优化驱动器的性能是很重要的。本文利用组合梁理论推导了悬臂式彩虹作动器弯曲共振频率的解析表达式。然后介绍了一种确定彩虹致动器简化层杨氏模数的共振法。作为一种压电弯曲驱动器，彩虹可以通过其机电活性的PZT层来激励，而不需要任何外部激励方法。杨氏模数可以通过测量其谐振频率、样品几何形状和部件的密度来计算。为了进行比较，还通过测量带有外部声激励的完全简化板的共振频率来确定杨氏模数。
The reduced and internally biased oxide wafer (RAINBOW) actuator, a new type of monolithic piezoelectric bending device, is composed of a reduced electromechanically passive layer and an unreduced piezoelectric layer. The determination of the elastic properties of the reduced layer is important for optimizing actuator performance. In this paper, an analytical expression for bending resonant frequency is derived for the cantilever RAINBOW actuator by using composite beam theory. A resonance method is then described for determining Young’s modulus of the reduced layer of RAINBOW actuator. As a piezoelectric bending actuator, RAINBOW can be excited by its electromechanically active PZT layer without using any external excitation method. Young’s modulus can be calculated by measuring its resonant frequency, sample geometry, and densities of component parts. For comparison, the Young’s modulus is also determined by measuring the resonant frequency of a completely reduced plate with an external acoustic excitat...