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评定复合材料的超声换能器的研制
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作者 陈玉宝 章立新 《南昌航空工业学院学报》 CAS 2000年第2期76-79,共4页
由于复合材料结构的特殊性 ,对检测用的超声换能器提出了较高要求。论文系统分析了换能器的振动等效电路和振动方程 ,详细讨论了影响换能器性能的主要因素 。
关键词 复合材料 超声检测 超声换能器 振动等效电路
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Electrode Location Efficiency and Equivalent Circuit for Flexure Vibration of Piezoelectric Beam
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作者 贾玉斌 孙雨南 秦秉坤 《Journal of Beijing Institute of Technology》 EI CAS 1999年第4期410-415,共6页
Aim To provide technical parameters for development of quartz gyro. Methods Theory of elastic beam was applied to piezoelectric beam. Based on the concept of equivalent volume force and energy conservation, the f... Aim To provide technical parameters for development of quartz gyro. Methods Theory of elastic beam was applied to piezoelectric beam. Based on the concept of equivalent volume force and energy conservation, the formula of electrode location efficiency was derived. And the electric system was compared with the dynamic one according to the principle of equivalent circuit for piezoelectric crystal, and the general formulae of the parameters for the equivalent circuit, R n L n C n , were derived. Results and Conclusion Optimum electrode location is chosen, and the derived equivalent circuit parameters are the theoretical base of the circuit design for quartz gyro. 展开更多
关键词 quartz Gyro vibration of piezoelectric beam electrode location efficiency equivalent circuit resonance frequency
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