Results 11 to 20 of about 28,947 (291)

Experimental Evaluation of Miniature Impedance Board for Loosening Monitoring of the Threaded Pipe Connection

open access: yesFrontiers in Physics, 2021
Electromechanical impedance (Electromechanical impedance)-based methods as potential nondestructive evaluation (NDT) techniques have been widely used in the field of structural health monitoring (SHM), especially for the civil, mechanical, and aerospace ...
Yabin Liang   +13 more
doaj   +1 more source

Characteristics of a 2-2 Piezoelectric Composite Transducer Made by Magnetic Force Assembly

open access: yesCrystals, 2022
A wider operational bandwidth, a higher electromechanical coupling factor, and lower acoustic impedance are important requirements for ultrasound transducers for use across many applications. Conventional 2-2 piezoelectric composite transducers have been
Taeyang Kim
doaj   +1 more source

Structural Health Monitoring of Timber Using Electromechanical Impedance (EMI) Technique

open access: yesAdvances in Civil Engineering, 2020
Nowadays, the electromechanical impedance method has been widely used in the field of structural healthy monitoring, especially for the concrete and steel materials.
Fang Han   +4 more
doaj   +1 more source

Low-Cost Piezoelectric Sensors for Time Domain Load Monitoring of Metallic Structures During Operational and Maintenance Processes [PDF]

open access: yes, 2020
The versatility of piezoelectric sensors in measurement techniques and their performance in applications has given rise to an increased interest in their use for structural and manufacturing component monitoring.
Casbas-Gimenez, Jesus   +5 more
core   +4 more sources

Digital programming of reciprocity breaking in resonant piezoelectric metamaterials

open access: yesPhysical Review Research, 2023
We demonstrate a digitally controlled piezoelectric metamaterial waveguide leveraging resonant, spatiotem-porally modulated synthetic impedance circuits for programmable reciprocity breaking.
Mustafa Alshaqaq   +2 more
doaj   +1 more source

Effect of the Matching Circuit on the Electromechanical Characteristics of Sandwiched Piezoelectric Transducers

open access: yesSensors, 2017
The input electrical impedance behaves as a capacitive when a piezoelectric transducer is excited near its resonance frequency. In order to increase the energy transmission efficiency, a series or parallel inductor should be used to compensate the ...
Shuyu Lin, Jie Xu
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   +1 more source

Electrical Impedance Spectroscopy for Electro-Mechanical Characterization of Conductive Fabrics

open access: yesSensors, 2014
When we use a conductive fabric as a pressure sensor, it is necessary to quantitatively understand its electromechanical property related with the applied pressure.
Tushar Kanti Bera   +7 more
doaj   +1 more source

A theoretical and experimental investigation into multilayered piezoelectric composite transducers [PDF]

open access: yes, 2002
The behaviour of a number of 3-1 connectivity piezoelectric composite plate transducers is presented. The fundamental thickness mode resonance of such devices is found to be contaminated by lateral resonant activity; this is evidenced in the measured and
Hayward, G., O'Leary, R.L.
core   +1 more source

Home - About - Disclaimer - Privacy