Results 11 to 20 of about 200,741 (275)

A theoretical analysis of a piezoelectric ultrasound device with an active matching layer [PDF]

open access: yes, 2007
This paper investigates the use of magnetically active materials in the matching layer of a piezoelectric transducer. This then allows the performance of the device to be dynamically altered by applying an external field.
Mulholland, A.   +6 more
core   +4 more sources

Investigating the influence of the constituent materials on the performance of periodic piezoelectric composite arrays [PDF]

open access: yes, 2007
This paper describes a theoretical investigation into the influence of the constituent materials on periodic composite array transducer performance. A finite element (FE) model, configured in PZFlex, is used to analyze the performance of a wedge coupled ...
Mackersie, J.W.   +3 more
core   +4 more sources

Analysis and design of Piezoelectric sonar transducers. [PDF]

open access: yes, 1970
PhDIn this study techniques are developed for the analysis and design of piezoelectric sonar transducers based on equivalent circuit representations. For the purposes of analysis, equivalent circuits capable of accurately representing every element ...
Rodrigo, Gerard Christopher
core   +4 more sources

Modeling and simulation of piezoelectric generator with indirect contact excited by vortex-induced vibration [PDF]

open access: yesE3S Web of Conferences, 2022
In the last years, the new research papers piezoelectric energy harvesting from vortex-induced vibration (PEH-VIV) are focused on indirect contact between airflow and piezoelectric transducer.
Mazar Hajar   +5 more
doaj   +1 more source

Theoretical modelling of frequency dependent elastic loss in composite piezoelectric transducers [PDF]

open access: yes, 2007
The large number of degrees of freedom in the design of piezoelectric transducers requires a theoretical model that is computationally efficient so that a large number of iterations can be performed in the design optimisation.
Hayward, G.   +5 more
core   +4 more sources

Piezoelectric ceramic materials on transducer technology for energy harvesting: A review

open access: yesFrontiers in Energy Research, 2022
Recently, energy harvesting through the means of piezoelectric transducer technology has increasingly attracted the attention of engineers and scientists in producing/generating electricity for human consumption.
V. E. Ogbonna   +2 more
doaj   +1 more source

Research and Fabrication of Broadband Ring Flextensional Underwater Transducer

open access: yesSensors, 2021
At present, high-speed underwater acoustic communication requires underwater transducers with the characteristics of low frequency and broadband. The low-frequency transducers also are expected to be low-frequency directional for realization of point-to ...
Jiuling Hu   +5 more
doaj   +1 more source

Design of Piezoelectric Ultrasonic Transducer Based on Doped PDMS

open access: yesSensors, 2021
The performance of the ultrasonic transducer will directly affect the accuracy of ultrasonic experimental measurement. Therefore, in order to meet the requirements of a wide band, a kind of annular 2-2-2 piezoelectric composite is proposed based on doped
Ran Yang   +3 more
doaj   +1 more source

Multi-layered piezoelectric composite transducers [PDF]

open access: yes, 2003
Multilayered piezoelectric materials present themselves as a suitable technology for the development of sub 100kHz transducers. A variety of different configurations have been proposed, including stacked 2-2, 1-3 and 3-1 connectivity configurations ...
Hayward, G., O'Leary, R.L., Parr, A.C.S.
core   +4 more sources

A micro ultrasonic motor using a micro-machined cylindrical bulk PZT transducer [PDF]

open access: yes, 2006
In this paper, a micro ultrasonic motor using a micro-machined bulk piezoelectric transducer is introduced. The cylindrical shaped bulk piezoelectric transducer, a diameter of 0.8 mm and a height of 2.2 mm, was developed as stator transducer for ...
Morita, Takeshi   +5 more
core   +1 more source

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