Results 101 to 110 of about 3,034 (213)

Fault Detection Method for High-speed EMU Axlebox Bearings Based on Envelope Synthesis

Chengshi guidao jiaotong yanjiu
[Objective] The actual operating conditions of high-speed EMUs (electric multiple units) are complex, and the vibration acceleration signals of axlebox bearings often exhibit strong nonlinear and non-stationary features, with significant background noise
WANG Yushuo, CUI Litong, SONG Chunyuan, LIU Chuang, YU Shui   +4 more
doaj   +1 more source

A Comprehensive Review of Adsorbents for Rare Earth Separation: Design, Synthesis, Adsorption Performance, and Mechanisms

Rare Metals, EarlyView.
ABSTRACT Rare earth elements (REEs) play an irreplaceable role in modern technology and industry. However, due to the highly similar physicochemical properties among REEs, their separation remains a significant challenge. Additionally, REEs often exist in low‐concentration solutions, making efficient REE recovery an urgent task.
Miao‐Miao Huang, Jun Tan, Liu‐Yin Xia, Kai Han, Hong‐Yan Cai, Xin Ma, Shuai Wang   +6 more
wiley   +1 more source

Study of Wheel-slide-protection Strategy of High-speed EMUs

, 2017
Wheel-slide-protection control is one of the core technologies for the high-speed EMUs brake system. The effective and reliable wheel-slide-protection strategy can not only avoid the wheel tread flat, and protect the safety of the vehicle equipments, but also can take advantage of adhension force between wheel and rail to guarantee braking distance ...
SUN Huanyang, Luo Feiping, Wang Qun, Yang Lei, Yang Shuo   +4 more
openaire   +1 more source

Design and Experimental Verification of High-speed EMU Built-in Bogies

Chengshi guidao jiaotong yanjiu
[Objective] Compared with bogies suspended on the outer side of the axle box, built-in bogies offer advantages such as light weight, superior curve negotiation capability, lower wheel-rail wear and noise.
ZHOU Dianmai, JIA Honglong, ZHAO Wenxue
doaj   +1 more source

Enhanced Low‐Frequency Microwave Absorption and Corrosion Resistance of FeSiAl Using Low‐Melting‐Point Glass Phase Coatings

Rare Metals, EarlyView.
ABSTRACT This study developed a FeSiAl@LMPGP composite material to address the demand for low‐frequency electromagnetic absorption. Through controllable heat treatment, FeSiAl particles and PbO nanoparticles self‐assembled into a high‐density Mott–Schottky heterointerface structure, which exhibited a significant built‐in electric field (BIEF) effect ...
Yuqi Wang, Chuyang Liu, Haochen Qu, Xiangyu Ye, Luwei Shao, Guangbin Ji   +5 more
wiley   +1 more source

Research on Intelligent Pneumatic Door Control System of High-speed EMU

机车电传动, 2020
Pneumatic side doors of CRH2 and CRH380A EMU have the advantages of simple structure and low failure rate, but with the disadvantages of single functions and hardware upgrading difficulties, which could not meet the trend of train intelligence.
Qiang ZHOU, Zhiliang FU, Aihua ZHANG, Wenxue YU   +3 more
doaj  

Coral‐Like Yolk–Shell‐Structured CoNi@Void@C Microspheres for Enhanced Microwave Absorption, Photothermal, Anti‐Corrosion, and Radiation Shielding Properties

Rare Metals, EarlyView.
ABSTRACT Considering the multiple challenges faced by stealth coatings in complex service environments, the development of multifunctional integrated microwave absorbing materials (MAMs) that combine efficient electromagnetic (EM) attenuation with environmental tolerance has become an urgent need. In this work, coral‐like CoNi@Void@C microparticle (MP)
Jiale Wu, Kaizhao Wang, Kaijun Wang, Hyeona Park, Jangyeon Hwang, Junkai Li, Yafei Wang, Jin Hu, Shizhao Xiong   +8 more
wiley   +1 more source

Design of optimized tread profile for high-speed EMUs

To address two significant issues in high-speed electric multiple units (EMU), i.e. degraded vehicle dynamic performance under existing wheel-rail interactions and increased wheel tread wear at elevated operating speeds, this paper proposes an optimized tread profile design that balances wheel-rail interactions, dynamic performance, and wear resistance.
SUN Weinan, CHI Maoru, XIE Yucheng, CAI Wubin, ZHANG Xiao, CHEN Yongfa   +5 more
openaire   +1 more source

Test Study on Carbody Abnormal Vibration of High-speed EMUs

, 2014
Carbody abnormal vibration analysis of a high-speed EMUs was researched, mainly containing the wheel tread measurements,carbody vibration on-line test, turn around running and vibration compared before and after repairing profile. The results showed that the change of wheel/rail wear matching in the partial line induced equivalent conicity increasing ...
WU Hui-chao, XU Yun, SHI Jun-jie
openaire   +1 more source

Ionogel Actuators: A Review

SmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao, Dongqing He, Yuanxiang Zhao, Dongdong Jin, Jiaheng Zhang, Wei Wang   +5 more
wiley   +1 more source