Transducer Design

2021 ◽  
pp. 285-337
Author(s):  
Akis P. Goutzoulis ◽  
William R. Beaudet
Keyword(s):  
Transducer Design

A light lithium niobate transducer design and ultrasonic de-icing research for aircraft wing

Energy ◽  
2015 ◽  
Vol 87 ◽  
pp. 173-181 ◽  
Author(s):  
Zhenjun Wang ◽  
Yuanming Xu ◽  
Yuting Gu
Keyword(s):  
Lithium Niobate ◽  
Aircraft Wing ◽  
Transducer Design

scholarly journals Metal rings and discs Matlab/Simulink 3D model for ultrasonic sandwich transducer design

2012 ◽  
Vol 44 (3) ◽  
pp. 287-298 ◽  
Author(s):  
I. Jovanovic ◽  
D. Mancic ◽  
V. Paunovic ◽  
M. Radmanovic ◽  
V.V. Mitic
Keyword(s):  
Resonance Frequency ◽  
3D Model ◽  
Mechanical Impedance ◽  
Analytical Models ◽  
Resonant Frequencies ◽  
Matlab Simulink ◽  
Simulink Model ◽  
Metal Rings ◽  
Resonant Modes ◽  
Transducer Design

Metal-endings are integral part of different ultrasonic sandwich transducers. In this paper a new Matlab/Simulink 3D model of the finite metal rings and discs of various dimensions is realized. With this model, which describes both the thickness and the radial resonant modes, and the coupling between them, mechanical impedance of the sample can be easily computed. Resonance frequency-length curves for rings and disks with various materials and for different selected dimensions are given. Also, comparisons of the different approaches in determining of their resonant frequencies are shown. The proposed Matlab/Simulink model requires simpler implementation than other analytical models. That enabled modifying of 1D theory and simplified modelling and projecting of the ultrasonic sandwich transducers with short-endings. Finally, the computed and experimental results are compared.

High Efficiency Single Wafer Cleaning for Wafer Bonding-Based 3D Integration Applications

2012 ◽  
Vol 187 ◽  
pp. 269-272 ◽  
Author(s):  
Don Dussault ◽  
F. Fournel ◽  
V. Dragoi
Keyword(s):  
Removal Efficiency ◽  
Wafer Bonding ◽  
High Efficiency ◽  
Current Work ◽  
Particle Removal ◽  
3D Integration ◽  
Production Scale ◽  
Megasonic Cleaning ◽  
Wafer Cleaning ◽  
Transducer Design

Current work describes development, testing and verification of a single wafer megasonic cleaning method utilizing a transducer design that meets the extreme particle neutrality, Particle Removal Efficiency (PRE), and repeatability requirements of production scale wafer bonding and other applications requiring extremely low particle levels.

An Analysis of Laminated Piezoelectric Infinite Plate for Broadband Biomedical Ultrasound Transducer Design

2007 ◽  
Author(s):  
Daniel H. Cortes ◽  
Sam M. Mukdadi
Keyword(s):  
Boundary Conditions ◽  
Frequency Spectrum ◽  
Infinite Plate ◽  
Ultrasound Transducers ◽  
Contrast Imaging ◽  
Element Analysis ◽  
Frequency Spectra ◽  
Waveguide Modes ◽  
Transducer Design ◽  
Zero Group

This work investigates the use of frequency spectrum analysis of waveguide propagation in multi-layered anisotropic piezoelectric transducers. A semi-analytical finite-element analysis (SAFE) is used to model the transducer as a piezoelectric infinite plate. Dispersion curves, group velocities and displacement frequency spectra can be obtained for any multilayered piezoelectric plate. Stress-free boundary conditions were assumed for all analyses. Results for open and closed circuit boundary conditions were analyzed. Zero-Group-Velocity (ZGV) frequencies of high-order waveguide modes were observed to provide multi-resonant displacement frequency spectrum. Comparison of numerical and experimental results shows a good agreement between peak and off-peak values of the displacement spectrum. Results showed that optimization of layered structure may provide an efficient means for generating multi-thickness (ZGV) waveguide modes, thus increasing the bandwidth of harmonic ultrasound transducers for contrast imaging.

scholarly journals Design and Analysis of Two Piezoelectric Cymbal Transducers with Metal Ring and Add Mass

Sensors ◽  
2019 ◽  
Vol 19 (1) ◽  
pp. 137 ◽  
Author(s):  
Wenjie Wang ◽  
Weihao Shi ◽  
Peter Thomas ◽  
Mingsui Yang
Keyword(s):  
Simulation Analysis ◽  
Low Frequency ◽  
High Strength ◽  
Structural Parameter ◽  
Metal Ring ◽  
Cavity Structure ◽  
Good Consistency ◽  
Frequency Transducer ◽  
Detailed Simulation ◽  
Transducer Design

Based on traditional sandwich structure, two piezoelectric transducers were designed to meet the strict underwater application backgrounds such as high pressure, corrosion resistance, and high strength. Both transducers integrated most of previous researches while one transducer has a multilayer cavity structure which is different from the other structure and previous transducer structures. After a detailed simulation analysis of every structural parameter, key parameters were pointed out to have an obvious influence on its performance. Then, two models were constructed and compared with chosen sets of geometry parameters and manufacturing process, which can also provide a reference for low-frequency transducer design. The simulation results and experimental results of our transducers show a good consistency which indicates the cavity structure can reduce the resonance frequency.

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