• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >Vibration analysis of piezoelectric materials by optical methods
【24h】

Vibration analysis of piezoelectric materials by optical methods

机译：压电材料振动的光学方法分析

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

This study provides two noncontact and realtime optical measurement methods to assess the displacement, natural frequencies, and mode shapes of a vibrating piezoelectric material. The methods are carried out using amplitude-fluctuation electronic speckle pattern interferometry (AF-ESPI) and laser Doppler vibrometer (LDV), which are full-field and point-wise displacement measurement, respectively. Because the fringe patterns measured by AF-ESPI appear as a clear picture at the natural frequency, both natural frequencies and mode shapes of the vibrating material can be successfully obtained. In the LDV system, a swept-sine excitation signal from the function generator to the beam can result in a corresponding peak in frequency response curve at natural frequencies. From the frequency response curve, the natural frequencies are thus acquired. Measured results by both methods are seen to be in good agreement with theoretical predictions by the Galerkin method and finite element method.
机译：这项研究提供了两种非接触式和实时光学测量方法来评估振动压电材料的位移，固有频率和模式形状。这些方法是使用振幅波动电子散斑图干涉法（AF-ESPI）和激光多普勒振动计（LDV）进行的，它们分别是全场和逐点位移测量。因为通过AF-ESPI测量的条纹图案在固有频率下显示为清晰的图像，所以可以成功地获得振动材料的固有频率和振型。在LDV系统中，从函数发生器到波束的扫频正弦激励信号会导致在自然频率处的频率响应曲线出现相应的峰值。因此从频率响应曲线中获取固有频率。两种方法的测量结果被认为与Galerkin方法和有限元方法的理论预测非常吻合。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号