Results 81 to 90 of about 2,848 (264)

Ultrasonic Inspection of a 9% Ni Steel Joint Welded with Ni-based Superalloy 625: Simulation and Experimentation

Metals, 2018
The ultrasonic inspection of thick-walled welded joint with austenitic weld metal has proven to be a challenge due to its anisotropic microstructure that can promote ultrasonic waves attenuation.
João da Cruz Payão Filho, Elisa Kimus Dias Passos, Rodrigo Stohler Gonzaga, Ramon Fonseca Ferreira, Daniel Drumond Santos, Diego Russo Juliano   +5 more
doaj   +1 more source

Buried Defect Detection Method for a Blowout Preventer Seal Ring Groove Based on an Ultrasonic Phased Array. [PDF]

Materials (Basel), 2022
Wang S, Zhang L, Yu P, Xu Q, Fan J, Yu J.   +5 more
europepmc   +1 more source

Flexible Implantable Silicon Carbide Multi‐Electrode Array (MEA) for Cell Multichannel Recording and Cell Ablation

Advanced Materials Technologies, EarlyView.
Flexible silicon carbide (SiC) microelectrode arrays enable high‐fidelity, multichannel cell extracellular recording and precise localized ablation. SiC has been extensively evaluated to persist long‐term in chronic physiological conditions while remaining robust, with excellent electrical and electrochemical stability.
Minh Anh Huynh, Matthew Barton, Sharda Yadav, Tuan‐Khoa Nguyen, Nam‐Trung Nguyen   +4 more
wiley   +1 more source

Online evolution of a phased array for ultrasonic imaging by a novel adaptive data acquisition method

Scientific Reports
Ultrasonic imaging, using ultrasonic phased arrays, has an enormous impact in science, medicine and society and is a widely used modality in many application fields.
Peter Lukacs, Theodosia Stratoudaki, Geo Davis, Anthony Gachagan   +3 more
doaj   +1 more source

Crack Orientation and Depth Estimation in a Low-Pressure Turbine Disc Using a Phased Array Ultrasonic Transducer and an Artificial Neural Network

Sensors, 2013
Stress corrosion cracks (SCC) in low-pressure steam turbine discs are serious hidden dangers to production safety in the power plants, and knowing the orientation and depth of the initial cracks is essential for the evaluation of the crack growth rate ...
Wenshuang Chang, Shijiu Jin, Shili Chen, Xiaoxia Yang   +3 more
doaj   +1 more source

Occluded Grape Cluster Detection and Vine Canopy Visualisation Using an Ultrasonic Phased Array. [PDF]

Sensors (Basel), 2021
Parr B, Legg M, Bradley S, Alam F.
europepmc   +1 more source

Testing and Simulation of Multilayer Polyvinylidene Fluoride‐Based Piezoelectric Energy Harvester Devices

Advanced Materials Technologies, EarlyView.
The study considers the use of polymer/dielectric‐based multilayers piezoelectric Energy Harvesters (EH) to produce an output voltage and current, by exploiting the mechanical energy provided by human organs movements. In particular, the heart motion is considered from the kinematic viewpoint, and a multiphysics theoretical model is developed to assess
Hamdi Ezzin, Silvia Monchetti, Paolo Emilio Puddu, Luciano Teresi, Antonio DeSimone, Roberto Brighenti   +5 more
wiley   +1 more source

Highly Sensitive Phased Array Probes based on Capacitive Micromachined Ultrasonic Transducers

e-Journal of Nondestructive Testing
Capacitive Micromachined Ultrasonic Transducers (CMUTs) offer a wide freedom of design for ultrasonic phased arrays. They are characterized, in comparison to piezoelectric transducers, by a higher sensitivity in receiving and a wider bandwidth based on ...
Uwe Voelz, Marco Kircher, Sandro G. KOCH, Marcel Krenkel   +3 more
doaj   +1 more source

The Evolution of Aerosol Jet Printing, A Review: Enhancing Material Versatility and Improvements for Next‐Generation Applications

Advanced Materials Technologies, EarlyView.
Aerosol Jet Printing (AJP) has emerged as a versatile additive manufacturing technique for high‐resolution, conformal, and multi‐material printing. This review highlights advances in printable materials, substrate compatibility, post‐processing, characterization, and process innovations, while critically discussing current challenges and future ...
Chandrachur Chatterjee, Rocco Lupoi, Michael J. Gibbons   +2 more
wiley   +1 more source

A 2D Ultrasonic Phased Array Optimization Framework Enabled by Reconfigurable Laser Induced Phased Arrays

Journal of Physics: Conference Series
Abstract Three-dimensional (3D) ultrasonic imaging enables the viewing of internal features in a more accurate way than cross-sectional imaging. 3D imaging requires two-dimensional (2D) ultrasonic phased arrays to resolve all three spatial dimensions through beamforming along azimuthal and elevation angles.
Lukacs, Peter, Davis, Geo, Pieris, Don, Stratoudaki, Theodosia   +3 more
openaire   +3 more sources