Results 41 to 50 of about 5,014 (181)

Towards an Alternative to Time of Flight Diffraction Using Instantaneous Phase Coherence Imaging for Characterization of Crack-Like Defects

Sensors, 2021
Time of flight diffraction (TOFD) is considered a reliable non-destructive testing method for the inspection of welds using a pair of single-element probes.
Baptiste Gauthier, Guillaume Painchaud-April, Alain Le Duff, Pierre Bélanger   +3 more
doaj   +1 more source

Capacity analysis of suburban rail networks [PDF]

, 2016
As is well known, capacity evaluation and the identification of bottlenecks on rail networks are complex issues depending upon several technical elements.
Ibáñez, J. N., Malavasi, Gabriele, Navajas, E. C., Ricci, Stefano, Rotoli, Francesco   +4 more
core   +1 more source

Ultrasonic Array Imaging of Nuclear Austenitic V-Shape Welds with Inhomogeneous and Unknown Anisotropic Properties

Applied Sciences, 2021
The quality of ultrasound images of welds is highly penalized by the dendritic structure of the material that forms during cooling. The image of a flaw is all the more degraded as a reliable description of such a medium is most of the time not possible ...
Corentin Menard, Sébastien Robert, Dominique Lesselier   +2 more
doaj   +1 more source

Identification of yeasts present in artisanal yoghurt and traditionally fermented milks consumed in the northern part of Cameroon [PDF]

, 2019
Bacteria generally ferment milk but, sometimes, yeasts are found in fermented milks. The presence of these yeasts in the microbial community of some fermented milks could be intentional or accidental.
Maïworé, Justine, Montet, Didier, Piro-Metayer, Isabelle, Tatsadjieu Ngoune, Leopold   +3 more
core   +1 more source

Optimal Design of Sparse Array for Ultrasonic Total Focusing Method by Binary Particle Swarm Optimization

IEEE Access, 2020
Ultrasonic phased array technology is used in various fields. Traditional full phased arrays place elements in every position of a uniform lattice with half-wavelength spacing between the lattice points, so the hardware cost is very high.
Han Zhang, Bichao Bai, Jianfeng Zheng, Yun Zhou   +3 more
doaj   +1 more source

Magnetic Anisotropy Modulation via van der Waals Gap Engineering in 2D Ferromagnet Fe4GeTe2

Advanced Science, EarlyView.
This study demonstrates a new route to control magnetic anisotropy in 2D ferromagnets via van der Waals gap engineering. In Fe4GeTe2, an interface‐induced vdW gap expansion is found to anomalously enhance in‐plane magnetic anisotropy while suppressing the spin reorientation transition.
Weiran Xie, Guodong Wei, Tong Zhao, Hangtian Wang, Jing Li, Jihang Gao, Peiyuan Yu, Zili Wang, Fan Gao, Stéphane Mangin, Zhimei Sun, Weisheng Zhao, Jie Zhang, Tianxiao Nie   +13 more
wiley   +1 more source

Comparison between PA and PWI/TFM Techniques for Non-Destructive Testing of Carbon Steel Weld

e-Journal of Nondestructive Testing
The Total Focusing Method (TFM) technique is an advanced Non-Destructive Testing (NDT) Ultrasonic Testing (UT) technique well known for its representative images of high resolution.
Weina Ke
doaj   +1 more source

Design of a low profile array transducer in d15 mode for high angled shear wave generation [PDF]

, 2016
Shear wave inspection is generated from mode conversion of longitudinal waves, using a selected, angled wedge positioned between the transducer and the test specimen.
Dobson, Jeff, Gachagan, Anthony, O'Leary, Richard, Qiu, Zhen   +3 more
core   +1 more source

An Opto‐Actuated Hydrogel for Cell Mechanoactuation and Real‐Time Force Monitoring

Advanced Science, EarlyView.
Researchers developed a mechanoactuated hydrogel interface where nanomachines exert forces on adhesion receptors and allow monitoring of traction force responses in real time. They demonstrate reversible talin recruitment, enhanced F‐actin polymerization, and a reduction in cell traction force when force is locally applied to focal adhesions of ...
Rinku Kumar, Marc A. Fernandez‐Yague, Adrien Bessaguet, Hosoowi Lee, Nicolas Giuseppone, Andrés J. García, Aránzazu del Campo   +6 more
wiley   +1 more source

Flaw sizing with plane wave imaging (PWI) – total focusing method (TFM) and deep learning for reactor pressure vessel

NDT & E International
Developments in machine learning and deep convolutional networks (CNNs) have enabled automated assessment of nondestructive evaluation (NDE) data. Ultrasonic data is especially challenging for automated evaluation due to its complexity, multi-channel nature, and volume.
Gonçalo Sorger, Iikka Virkkunen, Christer Söderholm   +2 more
openaire   +2 more sources