Results 131 to 140 of about 843 (169)
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Transverse sensitivity in nonaligned piezoceramic vibration transducers
Measurement Techniques, 1962It is necessary to take into account in measurements made with unaligned transducers the possibility of considerable nonlinear distortions due to the doubling of harmonic oscillating frequencies which are included in the spectrum of the vibration under consideration.
Yu. I. Iorish, K. R. Tsekhanskii
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Optoelectronic micropositioning device with a piezoceramic transducer
SPIE Proceedings, 1998This paper presents an experimental study on the behavior of piezoceramics type PZT, having a high compliance, and their application for an optoelectronic micropositioner device with piezoceramic transducer. The piezoelectric ceramics are crystallite conglomerate ferroelectrics materials with random orienting.
Irinela Chilibon, Maria Robu
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Directional factors of radially polarized piezoceramic cylindrical transducers
The Journal of the Acoustical Society of America, 2021An experimental investigation on the directional factors of radially polarized piezoceramic cylindrical transducers as a function of aspect ratio and for different design boundary conditions (fluid-filled, air-backed, and open-closed squirter) is presented.
Michael St. Pierre +2 more
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Multiple piezoceramic transducers (PZT)-structure interaction model
SPIE Proceedings, 2006Piezoceramic (PZT) transducers are extensively used for damage detection in electromechanical impedance (EMI) based structural health monitoring (SHM) of engineering systems. In the EMI methods, the PZT transducers are generally surface bonded or embedded inside the host structure, and then subjected to actuation so as to interrogate the structure for ...
Venu G. M. Annamdas, Chee K. Soh
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["Pulse" piezoceramic transducer].
Meditsinskaia tekhnika, 1978A piezoceramic acceleration sensor "Pulse", devised by the Gorky Scientific-Research Radiphysical Institute is described. The use in the sensor's design of a flexing sensitive element provides for high sensitivity and great power output of the instrument. This helps to easily coordinate the operation of the sensor with that of the recording devices and
N M, Anishkina +3 more
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Flexural waves transmitted by rectangular piezoceramic transducers
Smart Materials and Structures, 2001Rectangular piezoceramic transducers are widely used in ultrasonic evaluation and health monitoring techniques and structural vibration control applications. In this paper the flexural waves excited by rectangular transducers adhesively attached to isotropic plates are investigated.
Veidt, Martin +2 more
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Calculation of harmonically driven piezoceramic transducers
Measurement Techniques, 1994The electric field E in a poled dielectric is calculated numerically taking into account its electrical conductivity as a function of the driving frequency and the dielectric relaxation time. The conditions are determined for E to be independent of the driving frequency, stabilizing the characteristics of the transducers.
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Concrete structural health monitoring using embedded piezoceramic transducers
Smart Materials and Structures, 2007Health monitoring of reinforced concrete bridges and other large-scale civil infrastructures has received considerable attention in recent years. However, traditional inspection methods (x-ray, C-scan, etc) are expensive and sometimes ineffective for large-scale structures. Piezoceramic transducers have emerged as new tools for the health monitoring of
G Song +4 more
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Acoustic Remote Sensing Piezoceramic Transducers with Internal Screen
2020 IEEE 40th International Conference on Electronics and Nanotechnology (ELNANO), 2020The analytical relationships, allowing to quantify the parameters of the cylindrical piezoceramic transducers with internal screens for remote sensing acoustic fields by means of the related fields method in multiply assessments of the resonance radiation spectra and the angular distribution features of acoustic fields at the resonant frequencies ...
Oleksandr Leiko +3 more
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Active vibration control using shear mode piezoceramic transducers
The Journal of the Acoustical Society of America, 1991The “d15 ” constant of the piezoceramics was utilized to design shear mode transducers. These shear mode transducers were verified to be pure shear stress/strain sensors/actuators both theoretically and numerically (ANSYS). Active torsional vibration control experiments were conducted on various phenolic and pyrex tubes by using the shear mode sensors ...
Chia-Chi Sung +3 more
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