Results 81 to 90 of about 1,967 (202)

Development of new rail repair profiles for different operating conditions

Вестник Научно-исследовательского института железнодорожного транспорта
Introduction. Currently, contact-fatigue defects prevail on rails with increased intensity of lateral and vertical rail wear. The authors consider it essential to develop rational repair profiles for sections with different track plan, as current repair ...
O. A. Suslow, I. V. Khromov
doaj   +1 more source

Lightweight Convolutional Neural Networks Model and Data Augmentation‐Based Background Regression for Rail Surface Defect Detection

Artificial Intelligence for Engineering, EarlyView.
An ultra‐lightweight semantic segmentation network RailNet with only 0.905 M parameters is proposed for rail surface defect detection. Combined with a CDBM image enhancement and GAN‐based data augmentation, RailNet achieves superior segmentation accuracy and real‐time speed on edge devices.
Ziqing Wu, Weilong Niu, Xiaoguang Sun, Ting Qu, Yihui Zhu   +4 more
wiley   +1 more source

Disc machine testing to assess the life of surface-damaged railway track

, 2001
Wheel-rail contacts operate in an arduous and contaminated environment. Railway track running surfaces can become damaged either prior to or during operation.
Gao, N., Grieve, D.G., Dwyer-Joyce, R.S.
core  

FHENet: lightweight feature hierarchical exploration network for real-time rail surface defect inspection in RGB-D images

, 2023
In recent years, computer vision systems have been increasingly applied to rail defect inspection. Rail defects should be identified quickly and accurately to ensure safe, stable, and fast train operations and thereby reduce the incidence of accidents ...
Zhou, Wujie, Hong, Jiankang
core   +1 more source

An Overview of High‐Temperature Superconducting Cables in DC Systems: Unlocking Potential for High‐Voltage DC Networks

High Voltage, EarlyView.
ABSTRACT This paper provides an overview of high‐temperature superconducting (HTS) cables in DC systems, with a focus on their deployment in high‐voltage DC (HVDC) networks. The assessment of HTS cable properties—such as extremely low electrical resistance, high current‐carrying capacity and a compact geometry—and their comparison with those of ...
Mohammad Hossein Mousavi, Hassan Moradi, Kumars Rouzbehi   +2 more
wiley   +1 more source

A study of the head checks development on the low rail and the contact condition between wheel/rail on its appearance site

Nihon Kikai Gakkai ronbunshu, 2019
Rail is the peculiar element constructing the railway system. The phenomenon such as wear or defect of rail will be caused by the repeated wheel and rail rolling contact on the rail surface.
Masahiro TSUJIE, Megu MIURA, Hua CHEN, Yoshiaki TERUMICHI   +3 more
doaj   +1 more source

Automatic Identification and Early-warning System for On-board Rail Corrugation Based on Image Processing Technology

Chengshi guidao jiaotong yanjiu
[Objective] Current daily metro track inspections, including manual detection and track inspection vehicle method, suffer from issues such as low efficiency and high costs, failing to meet the increasing demands for rail transit operation safety ...
Tingrui CUI, Yujie LI, Chang LIU, Miaomiao HUO   +3 more
doaj   +1 more source

An induction heating system for in situ X‐ray diffraction imaging: design, simulation and application to dislocation dynamics in semiconductors

Journal of Synchrotron Radiation, EarlyView.
This work presents a compact induction heating system for time‐resolved in situ X‐ray diffraction imaging. The system enables contact‐free volumetric heating up to approximately 1600°C and provides flexible operation in different operating modes. Its performance is demonstrated through representative diffraction imaging experiments.We present a compact
Merve P. Kabukcuoglu, Nikolaos Sagias, Elias Hamann, Carsten Richter, Marcus Zuber, Kaspars Dadzis, Daniel Hänschke   +6 more
wiley   +1 more source

An integrated texture and depth isomorphic imaging and cross‐modal network for rail surface defect detection and measurement [PDF]

Rail defects significantly impact train operations, even posing serious safety risks. Existing methods can automatically collect images from the rail surface and identify apparent defects while facing challenges such as high false positive rates ...
Li, Jun, Wang, Haoran, Han, Qiang, Guo, Yunlong, Dai, Peng, Gu, Zichen, Wang, Le, Liu, Yang, Song, Haoran, Li, Qingyong   +9 more
core   +1 more source

Zero-Shot Texture Analysis and Regression-Based Deformation Recognition for Rail Anomaly Detection

IEEE Access
This paper presents a novel anomaly detection framework for rail systems, integrating zero-shot texture analysis and regression-based deformation recognition to monitor rail defects effectively.
Mikel Lainsa, Daeyoung Kim
doaj   +1 more source