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disc transducer
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  声波换能器
     Property Analysis of Disc Transducer for Ultrasonic Imaging Logging Tool,
     超声成象测井仪声波换能器的特性分析
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  “disc transducer”译为未确定词的双语例句
     A thin disc transducer polarized in thickness direction is widely used in ultrasonic imaging logging tool and CET logging tool.
     厚度方向极化的圆片状压电换能器已经广泛地被用到声波成象测井仪和 CET水泥胶结质量评价仪上。
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  相似匹配句对
     disc ventilation;
     制动盘通风散热性能研究;
短句来源
     Medical transducer
     医用传感器(一)
短句来源
     Research on Detective Transducer for Working Clearance of Winch Disc Brake
     绞车盘形闸工作间隙检测传感器的研究
短句来源
     Medical transducer
     医用传感器(三)
短句来源
     Property Analysis of Disc Transducer for Ultrasonic Imaging Logging Tool,
     超声成象测井仪声波换能器的特性分析
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  disc transducer
The PZT disc transducer behaviour was characterised by observing ultrasonic pulse echo trains reflected at the bottom surface of the Si substrate.
      
Subscripts, 1 and 2 denote radial directions of the circular disc transducer.
      


In this paper, we study the impulse response of thickness vibration of disc transducer. using mechanoelectronic equivalent circuit, Kirchoff's Iaw and courier's transformation. The formulas of admittance, transfer function and impulse response of thickness vibrating disc are obtained. By taking computation on HP-1000 computer with different backing and matching layers for ZNL-2 piezoelectric ceramic disc, we obtained the admittance transfer function and impulse response at such cases. At...

In this paper, we study the impulse response of thickness vibration of disc transducer. using mechanoelectronic equivalent circuit, Kirchoff's Iaw and courier's transformation. The formulas of admittance, transfer function and impulse response of thickness vibrating disc are obtained. By taking computation on HP-1000 computer with different backing and matching layers for ZNL-2 piezoelectric ceramic disc, we obtained the admittance transfer function and impulse response at such cases. At the same time, we study the idea, put forward by H.W.Person and C .H.Hertz, that the transducer is of Gaussian shape's transfer function, its impulse response is the best. When the impedance of matching layer is 4, 6(1e+6) kg/m2 s), the backing layer's 7. 5, 15. 5(1e+6) kg/m2. s ), and the thickness of matching layer 1. 12λ/4, the impulse response is better, and H.W .Person and C .H.Hertz' s idea is right. We measured some admittance of thickness vibrating disc transducers ultilizing HP-impedance analyser and 3033 X-Y recorder, so do the impulse response by impulse response measuring apparatus. The experimental result is agree with the theory, these result can be refered to in process of manufacturing in factory.

本文对厚度振动图片换能器的导纳、传递函数和脉冲响应进行了研究。利用换能器等效电路、基尔霍夫定律和傅里叶变换给出了导纳、传递函数和脉冲响应的表达式。通过在HP—1000微机上进行大量的计算,得到了ZNL—2压电陶瓷圆片换能器在不同匹配层和背衬层材料的导纳,传递函数和脉冲响应,得出了匹配材料声阻抗分别为4, 6( 106kg/m2· s)和背衬材料声阻抗分别为 7.5, 15.5(106kg/m2·时左右比较理想,然后用HP阻抗分析仪、X—Y3033记录仪和脉冲响应测试仪分别测出几个换能器的导纳和脉冲响应,从实验结果可知:理论和实验结果基本符合。所得结果可供工厂生产时参考。

A thin disc transducer polarized in thickness direction is widely used in ultrasonic imaging logging tool and CET logging tool.Many published literatures on coustic logging concentrated on propagation phenomena of the acoustic wave in the borehole and in the formation,with no account of the excitation of the source and the coupling with the surrounding medium.The transient response is analysed.Its equivalent circuit is set up and its source function is derived.There are three transmitting modes for the...

A thin disc transducer polarized in thickness direction is widely used in ultrasonic imaging logging tool and CET logging tool.Many published literatures on coustic logging concentrated on propagation phenomena of the acoustic wave in the borehole and in the formation,with no account of the excitation of the source and the coupling with the surrounding medium.The transient response is analysed.Its equivalent circuit is set up and its source function is derived.There are three transmitting modes for the transducer:over damped,critical damped and oscillatory modes.Only the oscillatory is practical application.The transmitting mode of the transducer is determined by the material property of the transducer,the machanical load of the surrounding coupling medium and the output impedance of the driving circuit.By changing these factors,the quality of the transmitted acoustic wave signal and acoustic imaging can be improved.

厚度方向极化的圆片状压电换能器已经广泛地被用到声波成象测井仪和 CET水泥胶结质量评价仪上。人们仅仅考虑了传播媒质对接收的声波信号的影响 ,而很少考虑声源对接收的声波信号的影响。文中分析了这种换能器的瞬态响应 ,建立了它的等效电路 ,推导出声波函数 ,并指出换能器在三种发射模式 :过阻尼、临界阻尼和振荡模式。只有振荡模式具有实际用途。换能器的发射模式由换能器的材料特性、周围耦合液体的机械负载和驱动电路的输出阻抗等因素决定。通过改变这些参数 ,可改变发射声波信号和声波成象的质量

 
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