Ultrasonic Bessel beam generation from radial modes of piezoelectric discs
We present comprehensive analytical and experimental investigations on ultrasonic Bessel
beam generation from radial modes of piezoelectric disc transducers. The Bessel vibration …
beam generation from radial modes of piezoelectric disc transducers. The Bessel vibration …
Model-based reconstruction for multi-frequency collimated beam ultrasound systems
AM Alanazi, S Venkatakrishnan… - IEEE Transactions …, 2023 - ieeexplore.ieee.org
Collimated beam ultrasound systems are a technology for imaging inside multi-layered
structures such as geothermal wells. These systems work by using a collimated narrow …
structures such as geothermal wells. These systems work by using a collimated narrow …
Ultrasonic waves from radial mode excitation of a piezoelectric disc on the surface of an elastic solid
We discuss the ultrasonic wave propagation characteristics in an isotropic elastic solid due
to the radial mode excitation of a piezoelectric disc actuator bonded to its surface. Finite …
to the radial mode excitation of a piezoelectric disc actuator bonded to its surface. Finite …
Model-based reconstruction for collimated beam ultrasound systems
A Alanazi, S Venkatakrishnan… - ICASSP 2022-2022 …, 2022 - ieeexplore.ieee.org
Collimated beam ultrasound systems are a novel technology for imaging inside multi-
layered structures such as geothermal wells. Such systems include a transmitter and …
layered structures such as geothermal wells. Such systems include a transmitter and …
[HTML][HTML] Full-waveform inversion and least-squares reverse-time migration imaging of collimated ultrasonic-beam data for high-resolution wellbore integrity monitoring
Los Alamos National Laboratory (LANL) has recently developed an ultrasonic side-lobe
suppressed Bessel collimated beam transducer for low-frequency imaging through highly …
suppressed Bessel collimated beam transducer for low-frequency imaging through highly …
Electromechanical response of laterally clamped piezoelectric wafers: Absence of in-plane mechanical resonances in the electromechanical impedance spectrum
We discuss the electromechanical response characteristics of laterally clamped
piezoelectric wafers. The impedance spectra (both magnitude and phase) obtained from …
piezoelectric wafers. The impedance spectra (both magnitude and phase) obtained from …
Collimated acoustic beams from radial modes of piezoelectric disc transducers
A novel approach to acoustic collimated beam generation is discussed. It relies on the radial
modes of vibration of piezoelectric discs. Ultrasonic beam generation from these radial …
modes of vibration of piezoelectric discs. Ultrasonic beam generation from these radial …
Development of a low-frequency piezoelectric ultrasonic transducer for biological tissue sonication
V Ostasevicius, V Jurenas, S Mikuckyte, J Vezys… - Sensors, 2023 - mdpi.com
The safety of ultrasound exposure is very important for a patient's well-being. High-
frequency (1–10 MHz) ultrasound waves are highly absorbed by biological tissue and have …
frequency (1–10 MHz) ultrasound waves are highly absorbed by biological tissue and have …
Tuning the relative strengths of electromechanical resonances using non-uniform polarization of piezoelectric wafers
A free piezoelectric disc with uniform polarization shows multiple radial modes of vibration
that occur in the low-frequency range. The strength of these radial mode resonances is fixed …
that occur in the low-frequency range. The strength of these radial mode resonances is fixed …
On the bandwidth and beam profile characteristics of a simple low-frequency collimated ultrasound beam source
J Greenhall, VK Chillara… - … of Vibration and …, 2021 - asmedigitalcollection.asme.org
We numerically investigate the bandwidth and collimation characteristics of ultrasound
beams generated by a simple collimated ultrasound beam source that consists of a …
beams generated by a simple collimated ultrasound beam source that consists of a …