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Physical Characteristics of and Transient Response from Thin Cylindrical Piezoelectric Transducers Used in a Petroleum Logging Tool
oleh: Lin Fa, Nan Tu, Hao Qu, Yingrui Wu, Ke Sun, Yandong Zhang, Meng Liang, Xiangrong Fang, Meishan Zhao
Format: | Article |
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Diterbitkan: | MDPI AG 2019-11-01 |
Deskripsi
We report on a transient response model of thin cylindrical piezoelectric transducers used in the petroleum logging tools, parallel to a recently established transient response model of thin spherical-shell transducers. Established on a series of parallel-connected equivalent-circuits, this model provides insightful information on the physical characteristics of the thin cylindrical piezoelectric transducers, i.e., the transient response, center-frequency, and directivity of the transducer. We have developed a measurement system corresponding to the new model to provide a state-of-the-art comparison between theory and experiment. We found that the measured results were in good agreement with those of theoretical calculations.