Results 101 to 110 of about 4,777 (211)

Characterisation of Nitinol for the Design of Tuneable Transducers [PDF]

, 2014
No abstract ...
Feeney, Andrew, Lucas, Margaret
core  

Mathematical Modeling the Electrical Impedance of Piezoceramic Disk Oscillating in Wide Frequency Range (Part 2. Medium Frequencies)

Vìsnik Nacìonalʹnogo Tehnìčnogo Unìversitetu Ukraïni Kììvsʹkij Polìtehnìčnij Ìnstitut: Serìâ Radìotehnìka, Radìoaparatobuduvannâ
This paper presents further developments in mathematical modeling of the electrical impedance of a piezoceramic disk in a wide frequency range, specifically focusing on the mid-frequency range, i.e., when the elastic wavelength becomes commensurate with
C. V. Bazilo, E. V. Faure, L. M. Usyk, V. V. Tuz, A. M. Chornii   +4 more
doaj   +1 more source

HOLOGRAPHIC VISUALIZATION OF CYLINDRICAL PIEZOCERAMIC TRANSDUCERS VIBRATIONS

Приборы и методы измерений, 2015
The piezomaterial used in cylindrical piezoceramic transducers vibrations requiring high precision displacements indicates that accuracy depends on design and technological factors. The analyzed criteria have made possible to choose the piezomaterial for
R. Vasiliauskas, K. Ragulskis, L. Patašien, A. Fedaravičius   +3 more
doaj  

Forced axisymmetric oscillations of circular multilayer bimorph plates

Vestnik Samarskogo Gosudarstvennogo Tehničeskogo Universiteta. Seriâ: Fiziko-Matematičeskie Nauki, 2017
A method for calculating circular multilayer bimorph plates is presented and new analytical solutions of axisymmetric dynamic problems of direct and inverse piezoelectric effects are obtained.
Dmitry A Shlyakhin, Olesya V Ratmanova
doaj   +1 more source

Narrow beam ultrasonic transducer matrix model for projection imaging of biological media

Archives of Acoustics, 2013
The following paper presents an idea of minimising the number of connections of individual piezoelectric transducers in a row-column multielement passive matrix system used for imaging of biological media structure by means of ultrasonic projection.
Krzysztof J. OPIELIŃSKI, Tadeusz GUDRA, Piotr PRUCHNICKI   +2 more
doaj  

Additive manufacture of impedance matching layers for air-coupled ultrasonic transducers [PDF]

A key problem in designing an efficient ultrasonic transducer for operating in a low acoustic impedance medium such as air is the large impedance mismatch between the active piezoceramic material and the load medium. While acoustic matching layers can be
Dixon, Steve M., Hunter, Michael, Leigh, Simon J., Purssell, C. P., Ramadas, Sivaram Nishal, Thornby, John Albert   +5 more
core   +1 more source

Detecting of the Longitudinal Grouting Quality in Prestressed Curved Tendon Duct Using Piezoceramic Transducers. [PDF]

Sensors (Basel), 2020
Jiang T, He B, Zhang Y, Wang L.
europepmc   +1 more source

Coupled Axisymmetric Thermoelectroelasticity Problem for a Round Rigidly Fixed Plate

Advanced Engineering Research
Introduction. To describe the operation of temperature piezoceramic structures, the theory of thermoelectroelasticity is used, in which the mathematical model is formulated as a system of nonself-adjoint differential equations.
D. A. Shlyakhin, E. V. Savinova
doaj   +1 more source

Optimisation of the longitudinal-torsional output of a half-wavelength Langevin transducer [PDF]

, 2012
Numerous ultrasonic applications, such as high-frequency/low frequency drilling, require or can benefit from the inclusion of some torsional vibration behaviour within a primarily longitudinal pattern. Producing longitudinal-torsional (LT) vibration in a
Al-Budairi, Hassan, Harkness, Patrick, Lucas, Margaret   +2 more
core  

Fabrication and characterization of free-standing thick-film piezoelectric cantilevers for energy harvesting

, 2009
Research into energy harvesting from ambient vibration sources has attracted great interest over the last few years, largely as a result of advances in the areas of wireless technology and low power electronics.
Harris, Nick, Kok, Swee Leong, White, Neil   +2 more
core   +1 more source