Evaluation of the mechanical quality factor under high power conditions in piezoelectric ceramics from electrical power
Evaluation of the mechanical quality factor under high power conditions in piezoelectric ceramics from electrical power
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DOI：
10.1016/j.jeurceramsoc.2014.08.038
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发表时间：
2015-02-01
影响因子：
5.7
通讯作者：
Uchino, K.
中科院分区：
文献类型：
--
作者：
Shekhani, H. N.;Uchino, K.
在大功率谐振条件下测量压电陶瓷机械品质因数的方法主要有电阻抗法和瞬态法。由于测量必须发生的条件，这些方法从应用角度提供相关数据的能力有限。在这项研究中，一个独特的方法来表征在压电材料的机械品质因数已被开发。该方法允许从单个频率的数据计算品质因数，这是其他方法无法实现的。这种技术已被应用到一个硬PZT材料的振动条件范围从反共振到共振在100 mm/s RMS的振动速度。阻抗数据的品质因数测量结果与新方法的测量结果相比，
The main methods used to measure the mechanical quality factor in piezoelectric ceramics under high power resonance conditions are the electrical impedance method and the transient method. These methods are limited in their ability to provide relevant data from an application perspective because of the conditions under which the measurements must occur. In this research, a unique approach for characterizing the mechanical quality factor in piezoelectric materials has been developed. This method allows for the calculation of the quality factor from data at a single frequency, which is not possible with other methods. This technique has been applied to a hard PZT material for vibration conditions ranging from antiresonance to resonance at a vibration velocity of 100 mm/s RMS. Results from the quality factor measurement from impedance data and from the new method have a deviation of