Physical Characteristics of and Transient Response from Thin Cylindrical Piezoelectric Transducers Used in a Petroleum Logging Tool

• Published in: Micromachines (Basel) Vol. 10; no. 12; p. 804
• Main Authors: Fa, Lin, Tu, Nan, Qu, Hao, Wu, Yingrui, Sun, Ke, Zhang, Yandong, Liang, Meng, Fang, Xiangrong, Zhao, Meishan
• Format: Journal Article
• Language: English
• Published: Switzerland MDPI AG 22-11-2019; MDPI
• Subjects: Acoustics; center-frequency; Directivity; Engineering; experimental-measurement; petroleum acoustical-logging; Physical properties; piezoelectric cylindrical-shell transducer; Piezoelectric transducers; Radiation; Spherical shells; Transient response; Vibration; Viscosity; center-frequency; experimental-measurement; petroleum acoustical-logging; piezoelectric cylindrical-shell transducer
• ISSN: 2072-666X; 2072-666X
• DOI: 10.3390/mi10120804

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.