A novel in-plane mode rotary ultrasonic motor is designed in this *** Langevin type bending vibrators are placed separately around the ring shaped stator and used to excite an in-plane vibration mode of the ring *** t...
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ISBN:
(纸本)9781467348140
A novel in-plane mode rotary ultrasonic motor is designed in this *** Langevin type bending vibrators are placed separately around the ring shaped stator and used to excite an in-plane vibration mode of the ring *** tapered rotors are assembled to the inner ring of the stator and clamped together by screw nut.A thin cylindrical supporting is placed under the stator ring,which makes the motor more stable and convenient to *** ultrasonic motor has no bearings,which is good at operating in cryogenic and vacuum environment.
Wavefields excited by a dipole source with ampUtude mismatch are investigated through a 3D finite difference *** is revealed that the directional patterns of a dipole source mainly depend on the source frequency and t...
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ISBN:
(纸本)9781467348140
Wavefields excited by a dipole source with ampUtude mismatch are investigated through a 3D finite difference *** is revealed that the directional patterns of a dipole source mainly depend on the source frequency and the ampUtude ratio of the two monopoles combining the transmitter.A mismatched dipole will not generate the non-dipole components in the borehole as long as the dipole receivers are ideally *** both the transmitter and receivers are mismatched,the Stoneley mode with strong amplitudes appears in the in-line and cross-line components of the cross-dipole sonic logging *** would probably lead to incorrect evaluations of shear velocity and azimuthal anisotropy of the formation.
The 2012 Symposium on Piezoelectricity,Acoustic Waves,and Device Applications(SPAWDA 2012)was held at Shanghai with the enthusiastic participations of engineers,professors,students,and business leaders all over China ...
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The 2012 Symposium on Piezoelectricity,Acoustic Waves,and Device Applications(SPAWDA 2012)was held at Shanghai with the enthusiastic participations of engineers,professors,students,and business leaders all over China and preeminent researchers in this industry from China,Singapore and the United *** again,we
In this paper,a new structure with a perforated electrode design in free-flooded 33-mode ring transducer is *** FEM is utilized to simulate the performance of the transducer,and several design parameters are optimized...
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In this paper,a new structure with a perforated electrode design in free-flooded 33-mode ring transducer is *** FEM is utilized to simulate the performance of the transducer,and several design parameters are optimized to achieve higher output power over a wider *** tested performance of the manufactured transducers verify the validity of the *** influence of different shape openings of transducer on its performance is also studied experimentally.
In this paper,the physical mechanism of ultrasonic treatment and its applications in medicine are ***,the biological effect of medical ultrasound in ultrasonic therapy is elaborated,and its action in treating some rel...
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In this paper,the physical mechanism of ultrasonic treatment and its applications in medicine are ***,the biological effect of medical ultrasound in ultrasonic therapy is elaborated,and its action in treating some related diseases is *** newly-developed ultrasonic therapy technologies and devices are stressed;the future developing trend of ultrasonic therapy is analyzed and predicted.
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