Results 21 to 30 of about 114,832 (155)

Stable microstructure in a nanocrystalline copper–tantalum alloy during shock loading

Communications Materials, 2020
Shock loading of materials alters the microstructure and considerably degrades mechanical performance. Here, shock loading of a nanocrystalline Cu–Ta alloy is found to induce minor changes to microstructure and mechanical performance, attributed to the ...
B. Chad Hornbuckle, Cyril L. Williams, Steven W. Dean, Xuyang Zhou, Chaitanya Kale, Scott A. Turnage, John D. Clayton, Gregory B. Thompson, Anit K. Giri, Kiran N. Solanki, Kristopher A. Darling   +10 more
doaj   +1 more source

Driving force coordinated control of an 8×8 in-wheel motor drive vehicle with tire-road friction coefficient identification

Defence Technology, 2022
Because of the complexities of tire-road interaction, the wheels of a multi-wheel distributed electric drive vehicle can easily slip under certain working conditions.
Zheng Zhang, Chun-guang Liu, Xiao-jun Ma, Yun-yin Zhang, Lu-ming Chen   +4 more
doaj   +1 more source

Dynamic characteristics of Mn-Cu high damping alloy subjected to impact load

Advances in Mechanical Engineering, 2021
Mn-Cu high damping alloy is a twin-type damping alloy. Owing to its martensite twin structure at room temperature, it can convert vibration energy into heat energy, thereby reducing vibration.
Rui Zhu, Baoquan Mao, Qijin Zhao, Zhiqian Wang, Xiaoping Han, Yuying Yang, Hua Li   +6 more
doaj   +1 more source

A method for calculating the discovery time of ballistic missiles detected by an infrared early warning satellite

AIP Advances, 2023
To determine the high dynamic change characteristics of the relative space position between a ballistic missile and an early warning satellite during detection, a centric motion model of the ballistic missile and the early warning satellite are ...
Taotao Zhang, Weiyi Chen, Dengjian Fang
doaj   +1 more source

Experimental study on the forced convection heat transfer characteristics of airflow with variable thermophysical parameters in a circular tube

Case Studies in Thermal Engineering, 2022
The heat transfer of fluids in pipelines under conditions with variable thermophysical parameters is ubiquitous in engineering applications, but effective methods to predict the heat transfer parameters are scarce.
Qijin Zhao, Baoquan Mao, Junyan Zhao, Huaying Li, Shuguang Wei, Xianghua Bai, Xinxi Zhang, Yunyin Zhang   +7 more
doaj   +1 more source

Assessing the Predictive Performance of Two DNN Models: A Comparative Analysis to Support Reusing Training Weights for Autonomous Aerial Refueling Missions

IEEE Access, 2023
The United States Navy aims to enhance its fleet by expanding the deployment of unmanned aircraft in carrier air wings. However, certifying the autonomous refueling of unmanned aerial platforms currently lacks a publicly available method.
Violet Mwaffo, Dillon Miller, Donald H. Costello   +2 more
doaj   +1 more source

Impact factor analysis on precision of magnetic gradient full tensor measurement system

AIP Advances, 2021
In order to achieve a comprehensive analysis of the influencing factors on the accuracy of the magnetic gradient full tensor measurement system, an orthogonal experimental design method is proposed to analyze the errors caused by the influencing factors.
Lei Xu, Ning Zhang, Huadong Chen, Chunsheng Lin, Xu Li, Ruikun Huo   +5 more
doaj   +1 more source

Dual-steering mode based on direct yaw moment control for multi-wheel hub motor driven vehicles: Theoretical design and experimental assessment

Defence Technology, 2022
One of the main challenges for multi-wheel hub motor driven vehicles is the coordination of individual drivetrains to improve mobility and stability in the steering process.
Zheng Zhang, Xiao-jun Ma, Chun-guang Liu, Shu-guang Wei   +3 more
doaj   +1 more source

Word Weapons? Letters to Editors [PDF]

, 2021
This short commentary argues that academic letters to editors on politically-contested topics must be treated with particular ethical care. The interface between science and Māori/Indigenous knowledge is one such topic, vulnerable to inadequate but ...
Stewart, Georgina Tuari, Georgina Stewart   +1 more
core   +1 more source

Multiple Leap Maneuver Trajectory Design and Tracking Method Based on Prescribed Performance Control during the Gliding Phase of Vehicles

International Journal of Aerospace Engineering
A novel standard trajectory design and tracking guidance used in the multiple active leap maneuver mode for hypersonic glide vehicles (HGVs) is proposed in this paper.
Taotao Zhang, Jun Zhang, Sen Shen, Weiyi Chen   +3 more
doaj   +1 more source