Results 71 to 80 of about 42,193 (264)

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

Advanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees, Timothy Harte, Bhagya Dharmasiri, Y. Athulya Wickramasingha, David J. Hayne, Daniel J. Eyckens, Luke C. Henderson   +6 more
wiley   +1 more source

An Improved Detecting Algorithm of Moving Targets for Airborne Maritime Surveillance Radar

Sensors
The traditional method is capable of detecting and tracking stationary and slow-moving targets in a sea surface environment. However, the signal focusing capability of such a method could be greatly reduced especially for those variable-speed targets. To
Zhefeng Wu, Gang Zhang, Xinchun Wang, Peng Sun, Yanchao Lin   +4 more
doaj   +1 more source

Embedded Ferroelectric Nanoclusters Can Drive Polarization Reversal in a Non‐Ferroelectric Polar Film via the Proximity Effect

Advanced Functional Materials, EarlyView.
Ferroelectric nanoclusters create local internal fields in a normally non‐switchable polar film because of polarization mismatch at their interfaces. That field opposes polarization in the regions with larger polarization and reinforces polarization in the regions with smaller polarization.
Anna N. Morozovska, Eugene A. Eliseev, Sergei V. Kalinin, Long‐Qing Chen, Dean R. Evans, Venkatraman Gopalan   +5 more
wiley   +1 more source

Thermally Robust Spin–Orbit Torque Switching in Low‐Resistivity Mo‐Alloyed β‐W Heterostructures

Advanced Functional Materials, EarlyView.
Mo‐alloyed β‐W heterostructures exhibit enhanced spin‐orbit torque efficiency, reduced resistivity and switching current density, and reliable operation from −50 to +150°C. The optimized W87.3Mo12.7 device achieves high spin Hall conductivity with thermal robustness, highlighting its potential for energy‐efficient magnetic memory and automotive ...
Han Seok Ko, Hyun Ju Lee, Jeong Kyu Lee, Han Sol Kim, Min Seok Kim, Quynh Anh T. Nguyen, Sonny H. Rhim, Young Keun Kim   +7 more
wiley   +1 more source

Multilateral-Jets Interaction on Hypersonic Missiles: A Numerical Investigation

International Journal of Aerospace Engineering
This paper numerically investigates flow field interaction and aerodynamic interference characteristics of multilateral-jets on hypersonic missiles. Three-dimensional compressible RANS equations coupled with the SST k-ω turbulence model are solved using ...
Zhao Sun, Haiyang Meng, Guangshan Chen
doaj   +1 more source

A 5 kW Near-Single-Mode Oscillating–Amplifying Fiber Laser Employing a Broadband Output Coupler with Simultaneous Raman Suppression and Spectral Narrowing

Photonics
In this work, we propose and demonstrate a novel approach to suppressing stimulated Raman scattering in an oscillating–amplifying integrated fiber laser (OAIFL) by changing the spectral bandwidth of the output-coupler fiber Bragg gratings (OC-FBGs).
Jiazheng Wu, Miao Yu, Yi Cao, Shiqi Jiang, Shihao Sun, Junlong Wang   +5 more
doaj   +1 more source

Structural Power Composites Based on High Mass Loading Zn‐Ion Hybrid Supercapacitors with Metal Mesh Current Collectors and Aramid Nanofiber/Glass Fiber Composite Electrolytes

Advanced Functional Materials, EarlyView.
A multifunctional structural power composite is developed by integrating high‐mass‐loading Zn‐ion hybrid supercapacitors with metal mesh current collectors and aramid nanofiber‐based composite electrolytes, enabling simultaneous load‐bearing capability and enhanced areal energy storage.
Yuseung Choi, Gilyong Shin, Hoyeon Lee, Eun Jae Nam, Byeong Jun So, Sungryul Yun, Fu‐Kuo Chang, Jei Gyeong Jeon, Tae June Kang   +8 more
wiley   +1 more source

Corrosion control in the aerospace industry [PDF]

Aircraft Engineering and Aerospace Technology, 2009
  +5 more sources

Distributed Fiber Optic Sensor for Accurate Liquid Level Monitoring Based on Optical Frequency Domain Reflectometry

Advanced Devices & Instrumentation
This study presents a highly accurate liquid level monitoring system utilizing optical frequency domain reflectometry (OFDR). The proposed system detects environmental characteristics along the length of the optical fiber and determines liquid levels in ...
Ying Mei, Xuefeng Wang, Yong Yang, Xiaojun Yang, Xuechao Tian, Rui Du   +5 more
doaj   +1 more source

Optimal Control and Applications to Aerospace: Some Results and Challenges [PDF]

Journal of Optimization Theory and Applications, 2012
This article surveys the classical techniques of nonlinear optimal control such as the Pontryagin Maximum Principle and the conjugate point theory, and how they can be implemented numerically, with a special focus on applications to aerospace problems. In practice the knowledge resulting from the maximum principle is often insufficient for solving the ...
openaire   +2 more sources