Results 31 to 40 of about 737,027 (223)

Laser metal deposition characterization study of metal additive manufacturing repair of rail steel specimens

Virtual and Physical Prototyping, 2023
Research on rail steel repair with Stellite 6 powder using a laser metal deposition process was investigated and reported in this study. Rail failures due to excessive wear and other rail head defects can increase the risk of operation and reliability ...
Alagu Subramaniam Nellian, John Hock Lye Pang   +1 more
doaj   +1 more source

Neuromorphic Electronics for Intelligence Everywhere: Emerging Devices, Flexible Platforms, and Scalable System Architectures

Advanced Materials, EarlyView.
The perspective presents an integrated view of neuromorphic technologies, from device physics to real‐time applicability, while highlighting the necessity of full‐stack co‐optimization. By outlining practical hardware‐level strategies to exploit device behavior and mitigate non‐idealities, it shows pathways for building efficient, scalable, and ...
Kapil Bhardwaj, Roshni Satheesh Babu, Yuxin Xia, Eva Bestelink, Radu Sporea, Nikos Hastas, Ioannis Zeimpekis, Dimitra G. Georgiadou, Sayani Majumdar   +8 more
wiley   +1 more source

Modeling the dynamic behavior of railway track taking into account the occurrence of defects in the system wheel-rail

MATEC Web of Conferences, 2017
This paper investigates the influence of wheel defects on the development of rail defects up to a state where rail prompt replacement becomes necessary taking into account different models of the dynamic contact between a wheel and a rail. In particular,
Loktev Alexey, Sychev Vyacheslav, Gluzberg Boris, Gridasova Ekaterina   +3 more
doaj   +1 more source

Deep neural network for diagnostics of railway track components

Вестник Самарского государственного технического университета. Серия: Технические науки, 2022
The problem of increasing the speed of railway transportation and ensuring reliability is associated with constant monitoring of the condition of the railway tracks.
Sergey P. Orlov, Nikolai A. Efimushkin, Natalia V. Efimushkina   +2 more
doaj   +1 more source

A Universal van der Waals Tunneling Injector for Monolayer CMOS

Advanced Materials, EarlyView.
A universal van der Waals injector unlocks polarity‐flexible tunneling contacts for monolayer CMOS. SnSe2, an intrinsically degenerate 2D semiconductor, establishes polarity‐specific band alignments with both WSe2 and MoS2 channels, enabling steep switching, high on/off ratios, and a unified route to low‐power 2D logic.
Hanbin Cho, Jing Huang, Seonguk Yang, Subin Im, Sangwoo Park, Jeongin Yeo, Sungyeon Kim, Gilhwan Do, Wenxuan Zhu, Soobeom Shin, Jongwon Lee, Yongjoon Shin, Do‐Sun Lee, Hu Young Jeong, Tae‐Eon Park, Jun Kang, Kyungmin Ko, Joonki Suh   +17 more
wiley   +1 more source

Finite element modeling of the aluminothermic welding with internal defects and experimental analysis

MATEC Web of Conferences, 2012
There are several hundreds aluminothermic welds and tenth of new welds being made daily on the Moroccan rail network. Although the aluminothermic welding technique is well proven, it is a critical safety component of the rail infrastructure.
Sidki F., Mouallif I., Mouallif Z., Benali A.   +3 more
doaj   +1 more source

A Fuzzy Adaptive PID Control Method for Novel Designed Rail Grinding Equipment

IEEE Access, 2023
Rail defects appear in a greater variety and frequency with the rapid development of High-Speed Rail (HSR), which seriously affects the safe operation of trains. Rail grinding is one of the common methods used to eliminate these defects.
Xiao Cheng, Jiangzhong Qian, Changwan Zheng, Fengxiang You, Haixia Wang, Jianfa Zhang, Shaolong Kuang   +6 more
doaj   +1 more source

Controlled Growth of Boron Nitride in Various Phases

Advanced Materials Interfaces, EarlyView.
Phase‐selective boron nitride growth is presented as a unified materials‐design problem across hexagonal, rhombohedral, cubic, and amorphous phases. By linking synthesis routes to thermodynamic stability, kinetic accessibility, surface diffusion, interfacial templating, and energetic activation, this review clarifies how bonding and stacking are ...
Pan Wu, Kanghao Xie, Jiajie Qi, Xiaorui Zheng, Kaihui Liu, Xuedong Bai, Li Wang   +6 more
wiley   +1 more source

Modelling the Dynamic Behaviour of the Wheel-Rail Interface by Using a Novel 3D Wheel-Rail Contact Model [PDF]

, 2011
Methods for multibody modelling and simulation should accurately replicate the dynamic behaviour of rail-wheel interface including precise values for wheel-rail contact positions. This paper studies the development of a novel 3-D wheel-rail contact model
Pislaru, Crinela, Ball, Andrew, Fengshou, Gu, Anyakwo, Arthur   +3 more
core   +2 more sources

Automated Identification and Localization of Rail Internal Defects Based on Object Detection Networks

Applied Sciences
The timely identification of rail internal defects and the application of corresponding preventive measures would greatly reduce catastrophic failures, such as rail breakage.
Sicheng Wang, Bin Yan, Xinyue Xu, Weidong Wang, Jun Peng, Yuzhe Zhang, Xiao Wei, Wenbo Hu   +7 more
doaj   +1 more source