Results 81 to 90 of about 5,914 (307)

Influence of Test Temperature and Test Frequency on Fatigue Life of Aluminum Alloy EN AW‐2618A

Advanced Engineering Materials, EarlyView.
The influence of test temperature and test frequency on the fatigue life of EN AW‐2618A is investigated. High‐cycle fatigue tests are performed at different test temperatures and frequencies on the 1000 h/230°C overaged state. Both test parameters reduce fatigue life due to time‐dependent damage mechanisms.
Ying Han, Julian M. Rosalie, Jan Radners, Mauro Madia, Philipp von Hartrott, Birgit Skrotzki   +5 more
wiley   +1 more source

Analysis of RF Front-End Performance of Reconfigurable Antennas with RF Switches in the Far Field

International Journal of Antennas and Propagation, 2014
The RF front-end performances in the far-field condition of reconfigurable antennas employing two commonly used RF switching devices (PIN diodes and RF-MEMS switches) were compared.
Insu Yeom, Junghan Choi, Sung-su Kwoun, Byungje Lee, Changwon Jung   +4 more
doaj   +1 more source

Current Status and Challenges in Data Collection for Aerospace Coatings Deposited by Plasma Spraying

Advanced Engineering Materials, EarlyView.
An innovative approach has been integrated into the GRENAT project to optimize plasma spraying and coating performance. Raw materials are accelerated and melted in the plasma generated by torches, creating coatings. Monitoring sensors collect process data which are combined with ex situ characterization data.
Lila Randriamananjara, Vincent Rat, Quentin Dubreuil, Patrice Valorge, Simon Goutier, Alain Denoirjean, Olivier Messe, Céline Ruelle, Jean‐Philippe Poli   +8 more
wiley   +1 more source

Compensation for the mutual coupling in transmitting antenna arrays

2016 IEEE Asia-Pacific Conference on Applied Electromagnetics (APACE), 2016
A numerical study is presented for the compensation of mutual coupling in antenna arrays. A Matlab code based on method of moments is used to find the compensated far field radiation patterns for non-identical and/or staggered wire antenna arrays. The isolated patterns for some antenna arrays when applicable are found using the principle of pattern ...
Khan, Sana, Arvas, Ercument
openaire   +3 more sources

Cathodic Cage Plasma Deposition of Nanostructured Cu–Fe–Se Coatings on Poly(methyl Methacrylate)

Advanced Engineering Materials, EarlyView.
Nanostructured Cu–Fe–Se coatings are deposited on PMMA by a modified cathodic cage plasma process, enabling low‐temperature deposition on polymer substrates. A transition from discontinuous to compact morphology is observed with temperature, with optimal properties at 200°C, where improved CuFeSe2‐type bonding, lowest sheet resistance, and favorable ...
V. S. S. Sobrinho, M. Naeem, T. H. C. Costa, M. S. Libório, J. C. A. Queiroz, C. B. B. Luna, R. R. M. Sousa, P. S. Vieira, E. M. Araújo   +8 more
wiley   +1 more source

Guest Editorial: Antenna-Enabled Sensors and Systems, the New Frontier in Sustainable Wireless Systems

IEEE Open Journal of Antennas and Propagation
Antennas are shifting with the Internet of Everything (IoE), 6G Joint Sensing and Communication (JSAC), and Wireless Power Transfer (WPT) paradigms into multifunctional devices, that provide more functionality than simply transmitting and receiving ...
Mahmoud Wagih, Gaetano Marrocco, Mohammad H. Zarifi, Jasmin Grosinger, Chaoyun Song, Qammer H. Abbasi   +5 more
doaj   +1 more source

Nondestructive Testing of Welded Composite Metal Foams

Advanced Engineering Materials, EarlyView.
X‐ray computed tomography (CT) is used to evaluate welded steel–steel composite metal foam (CMF) joints of two density classes. It reports variation in postweld spatial void distribution and correlates it to weld‐induced changes, mechanical performance, and failure within welded CMF panels.
Chinmaya Prerana Inguva, Aman Kaushik, Afsaneh Rabiei   +2 more
wiley   +1 more source

Design of Low-Loss Air Material Achieving High-Throughput Signal Transmitting Antennas

Materials & Design
To meet the demands of higher-throughput signal transmission, the development of 5G and 6G communication technologies is accelerating. However, Critical antenna components suffer from significant transmission losses at high frequencies, underscoring the ...
Kunpeng Gu, Silin He, Bihui Jin, Dengyang Chen, Jingyi Huang, Zhao Wang, Guangxian Li, Pengjian Gong   +7 more
doaj   +1 more source

Miniaturisation of high-frequency SURFACE wave radar transmitting antenna

The Journal of Engineering, 2019
Antennas operating in the high-frequency (HF) bands are generally relatively large in size, which severely limits the application of the antennas. Therefore, miniaturisation of the antenna is necessary.
Hong-Bo Li, Yang Song, Chang-Jun Yu
doaj   +1 more source

Microstructure Reconstruction in Battery Electrodes Using Machine Learning Based on Low‐Voltage Focused Ion Beam–Scanning Electron Microscopy Tomography Images

Advanced Engineering Materials, EarlyView.
Low‐voltage FIB‐SEM tomography combined with a image preprocessing pipeline improves phase contrast and enables reliable machine‐learning segmentation of conductive networks in lithium‐ion battery electrodes. Structural descriptors are extracted from segmented images, done semimanually and automated, and compared.
Lisa Beran, Vincent Nebel, Dominik Perius, Kshitij Kumar, Yannis Heim, Laura Bies, Tobias Kraus   +6 more
wiley   +1 more source