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首页> 外文期刊>IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control >The investigation of three-dimensional vibration for piezoelectricrectangular parallelepipeds using the AF-ESPI method
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The investigation of three-dimensional vibration for piezoelectricrectangular parallelepipeds using the AF-ESPI method

机译：用AF-ESPI方法研究压电矩形平行六面体的三维振动

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Electronic speckle pattern interferometry (ESPI) is a powerfulntool for the full-field measurement of a deformed body. In this paper, anthree-dimensional vibrating block that couples the out-of-plane andnin-plane motions is investigated using the amplitude-fluctuation ESPIn(AF-ESPI). This method demonstrates the advantages of combining highnprocessing speed, such as in the subtraction method, with high fringensensitivity, such as in the time-averaged method. The optical system fornAF-ESPI is then employed to analyze the volume vibration ofnpiezoelectric material for a rectangular parallelepiped configuration.nBased on the fact that fringe patterns measured by the AF-ESPI methodnappear as a clear picture only at the resonant frequency, both thennatural frequencies and the out-of-plane and in-plane vibration modenshapes are successfully obtained in this study. Finally, the impedancenanalysis as well as the finite element method (FEM) withnthree-dimensional model are also conducted to compare with the resultnobtained by AF-ESPI. It is shown that the numerical calculation and thenexperimental result agree fairly well for both the resonant frequencynand the mode shape in three-dimensional configurations
机译：电子散斑干涉法（ESPI）是用于变形场全场测量的强大工具。本文利用振幅波动ESPIn（AF-ESPI）研究了平面外和平面内耦合的三维振动块。该方法展示了将高处理速度（如减法）与高边缘敏感度（如时间平均方法）相结合的优势。然后使用nAF-ESPI的光学系统分析矩形平行六面体结构的压电材料的体积振动.n基于AF-ESPI方法测量的条纹图案仅在谐振频率，自然频率和这项研究成功地获得了平面外和平面内的振型。最后，还进行了阻抗分析以及三维模型的有限元分析，与AF-ESPI得到的结果进行了比较。结果表明，在三维结构中，共振频率和振型的数值计算与实验结果吻合得很好。

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