2003-08-012024-05-18https://scholars.lib.ntu.edu.tw/handle/123456789/713256摘要：本計畫將探討應用性頗廣的壓電陶瓷材料的振動問題，國內近十年來也投入大量的研究人力及經費作相關的研發工作，而大部分的研究皆僅在於純理論及數值計算，本研究計畫將整合且有系統地包含理論建立，數值計算以及實驗量測，針對壓電陶瓷材料板在不同電極條件下作完整的探究，以便理論、數值及實驗能互相驗證。實驗主要以電子斑點干涉術的實驗方法對壓電材料板作全域性的面外及面內振動模態以及共振頻率量測，並配合阻抗分析的結果作深入之探討，除此之外亦將應用有限元素數值計算作相關問題的理論研究並與實驗結果作比較。本研究計畫為兩年期計畫，第一年主要探討方形板之問題而第二年則為圓形板。<br> Abstract: The experimental measurement of resonant frequencies for the piezoceramic plate is generally performed by the impedance analysis. In the paper we employ an optical interferometry method called the amplitude-fluctuation electronic speckle pattern interferometry (AF-ESPI) to investigate the vibration characteristics of partially-electrode piezoceramic plates. As compared with the film recording and optical reconstruction procedures used for holographic interferometry, the interferometric fringes of AF-ESPI are produced instantly by a video recording system. Based on the face that clear fringe patterns measured by the AF-ESPI method will be shown only at resonant frequencies, both the resonant frequencies and corresponding mode shapes are obtained experimentally at the same time. The out-of-plane and in-plane vibration modes of piezoceramic plates will be discussed in this project. The numerical finite element calculations are also performed, and the results will be compared with the experimental measurements. This is a two-year project, the first year is focused on square plates and the second year investigates circular plates.電子斑點干涉術部分電極壓電陶瓷板共振頻率模態ESPIpartially-electrodepiezoceramic plateresonant frequencymode shape.