high frequency composite transducers
Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers
... piezoelectric transducers requires a theoretical model that is computationally efficient so that a large number of iterations can be performed in the design op- ...incorporate frequency dependent elastic ...
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A theoretical investigation of 2-2 composite transducers with high shear attenuation in the passive phase
... incorporate frequency depen- dent, viscoelastic losses ...2-2 composite transducer and investigate the ef- fects of introducing high shear attenuation into the passive ...and high ...
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Harmonic analysis of lossy piezoelectric composite transducers using the plane wave expansion method
... active) composite transducers using finite element (FE) modelling [14, ...the high computational cost. FE modelling can be used in the frequency domain [16] but for the modelling of periodic ...
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Article PIN-PMN-PT Single Crystal 1-3 Composite-based 20 MHz Ultrasound Phased Array
... of high resolution imaging and precise manipulation, the operational frequency of biomedical ultrasound needs to be greater than 20 ...applications, high frequency ultrasound transducer, which ...
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Dual-frequency Ultrasound Transducers for Medical Imaging.
... both frequency range and imaging area depress the performance of the imaging ...the high frequency layer, the maximum number of element in each acquisition was set to 5 to eliminate the grating lobe ...
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Nonlinear Metamaterial Composite Structure with Tunable Tunneling Frequency
... metamaterial composite structure ...accordant frequency range. The passband of the DNM also emerges, and its frequency range is greater than the ENM and ...the composite structure ...
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Lexical Representation and Processing in Cross-Script Urdu-English Bilinguals: The Case of Frequency-Balanced and Frequency-Unbalanced Cognates and Noncognates
... orthographic frequency of up to 11 per million. High-frequency words had an orthographic frequency of 40 or more per ...mean frequency and word length in syllables for each of the ...
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Modal analysis of high frequency acoustic signal approach for progressive failure monitoring in thin composite plates
... Therefore the distance between source location and Sensor 2 can be determined using Eq. 4. The result is 8.7 cm; 12 % or 1.2 cm error compared to actual location (7.5 cm). Note that the error can be decreased if ...
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Intrinsic eigenvibration frequency in the resonant ultrasound spectroscopy: Evidence for a coupling vibration between a sample and transducers
... with high accuracy. One of its curious features is resonance frequency shift caused by modulation of clamp force for a sample, although its mechanism has not been clarified ...measured frequency to ...
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Frequency estimation of pre-stressed and composite floors
... 1.3 Objectives The research carried out consisted of in-situ dynamic monitoring of 29 long-span floor slabs of different structural configurations with the following objectives: i to exa[r] ...
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High Frequency Trading Turns to High Frequency Technology to Reduce Latency
... Financial markets have always been high-speed, high-return activities. The ability to execute a transaction before your competitors determines who gets the profit from a deal. But we are a long ways from ...
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High speed model implementation and inversion techniques for ferroelectric and ferromagnetic transducers
... sonar transducers, vibration sensors and actuators, ultrasonic sources, inkjet printers, and camera focusing ...Ferromagnetic transducers are typically bulkier than their ferroelectric counterparts, due to ...
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High Speed Model Implementation and Inversion Techniques for Smart Material Transducers
... Shape memory alloys (SMAs) exhibit additional effects which must be incorporated in consti- tutive models. SMAs are capable of recovering from much larger strains than ferroelectric or ferromagnetic actuators – for NiTi ...
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Optimum Design and Analysis of the Drive Shaft in Composite Material
... the composite material and changing both the number of layers and the orientation of the various layers are aligned to the axis of the shaft a graphite shaft manufacturer has the ability to control the torque ...
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Developing of Ultrasound Experimental Methods using Machine Learning Algorithms for Application of Temperature Monitoring of Nano-Bio-Composites Extrusion
... PP/MC composite, the beginning of the degradation temperature shifts toward the higher temperatures with adding MWCNT to the composite, 392 and 408 o C correspondingly for ...
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Design of High Voltage Integrated Class F Amplifier for Ultra Sound Transducers
... Class B operation determines signal dependent circuit parameters mandating further insight to assess closed loop stability conditions. Instability manifests itself as a relatively small signal superimposed to the desired ...
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Finite Element Analysis of High Pressure Composite Vessels
... shaped composite weight vessel is built up utilizing limited component programming ANSYS ...hollow composite weight vessel which is subjected to high inward weight ...the composite weight ...
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An Efficient Hybrid High-Frequency Solution for the Composite Scattering of the Ship on Very Large Two-Dimensional Sea Surface
... According to the linear accumulative theory, the wind-driven sea surface is modeled based on the JONSWAP spectrum [9], and the ship model can be designed with CAD tools. Then the comprehensive ship-sea model is obtained ...
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Accurate heat loss evaluation of water cooled electric motors using a differential ultrasonic calorimeter
... ultrasonic transducers; however, an amplifier provides only a very limited control over the sensor ...ultrasonic transducers feature several resonances at various ...
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Compact Representations by Finite State Transducers
... transducers can be transformed into sequential transducers by adding p new letters to the alphabet A, and by replacing the p final functions by transitions labeled with these new letters[r] ...
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