Results 11 to 20 of about 1,371,942 (253)

Railway Renewal and Maintenance Cost Estimating [PDF]

, 2005
The aim of this thesis is to present a structured methodology which estimates Railway Infrastructure renewal and maintenance costs when there is a lack of quantitative cost data at the early stages of the project life cycle.
Ling, Daniel
core   +7 more sources

Main Factors on Effect of Precise Measurement and Precise Tamping Based on BP Neural Network

Applied Sciences, 2023
With the continuous development of precise measurement and precise tamping (PMPT) technology on Chinese railway conventional speed lines, the efficiency of machinery tamping operation and the quality of the track have been effectively improved. A variety
Jianjun Qu, Pan Liu, Yiyu Long, Fei Xu
doaj   +1 more source

Modeling and Optimization of Semantic Segmentation for Track Bed Foreign Object Based on Attention Mechanism

IEEE Access, 2021
The problem of foreign object intrusion onto the track bed often occurs in the actual operation process of high-speed railways. To solve the problem, we propose an anomaly detection method for the ballastless track bed, which is based on semantic ...
Haoran Song, Shengchun Wang, Zichen Gu, Peng Dai, Xinyu Du, Yu Cheng   +5 more
doaj   +1 more source

Change Detection: The Framework of Visual Inspection System for Railway Plug Defects

IEEE Access, 2020
Railway plug defects impact the safety of a railway system. To detect railway plug defects, we establish the framework of a visual inspection system (VIS), which is the first system that can perform railway plug inspection automatically and intelligently.
Xinyu Du, Yu Cheng, Zichen Gu
doaj   +1 more source

Differential Deformation Identification of High-Speed Railway Substructures Based on Dynamic Inspection of Longitudinal Level

Sensors, 2022
High-speed railway administrations are particularly concerned about safety and comfort issues, which are sometimes threatened by the differential deformation of substructures.
Shuai Ma, Xiubo Liu, Bo Zhang, Jianmei Wei   +3 more
doaj   +1 more source

Research on the rapid diagnosis method for hunting of high-speed trains [PDF]

Railway Sciences
Purpose – High-speed turnouts are more complex in structure and thus may cause abnormal vibration of high-speed train car body, affecting driving safety and passenger riding experience.
Wanru Xie, Yixin Zhao, Gang Zhao, Fei Yang, Zilong Wei, Jinzhao Liu   +5 more
doaj   +1 more source

Feature Augmentation Based on Pixel-Wise Attention for Rail Defect Detection

Applied Sciences, 2022
Image-based rail defect detection could be conceptually defined as an object detection task in computer vision. However, unlike academic object detection tasks, this practical industrial application suffers from two unique challenges, including object ...
Hongjue Li, Hailang Li, Zhixiong Hou, Haoran Song, Junbo Liu, Peng Dai   +5 more
doaj   +1 more source

Application of Air-Coupled Ground Penetrating Radar Based on F-K Filtering and BP Migration in High-Speed Railway Tunnel Detection

Sensors, 2023
As the number and length of high-speed railway tunnels increase in China, implicit defects such as insufficient lining thicknesses, voids, and poor compaction have become increasingly common, posing a serious threat to train operation safety.
Yang Lei, Bo Jiang, Guofeng Su, Yong Zou, Falin Qi, Baoqing Li, Feiyu Jia, Tian Tian, Qiming Qu   +8 more
doaj   +1 more source

Regina computer system for intelligent monitoring, diagnostics, and management of railway power supply systems

Diagnostyka, 2021
The analysis of the problem of innovative transformation of power supply networks of railways made it possible to scientifically substantiate the direction of research related to an optimal strategy for computer monitoring and intellectualization of the ...
Mykhailo Sopel, Oleksandr Stasyuk, Valeriy Kuznetsov, Lidiya Goncharova, Petro Hubskyi   +4 more
doaj   +1 more source

Long-Term Monitoring of Local Track Irregularity and Its Influence for Simply Supported Girder Bridge of HSR

Buildings, 2022
By analyzing dynamic track geometric irregularity data of high-speed railway (HSR) with ballast track in China, there is a peak of [5, 11] m wavelength for the longitudinal level at the beam joint of simply supported girder bridges.
Guolong Li, Fei Yang, Zaitian Ke, Xianfu Sun, Bing Liu, Wenbo Zhao, Yunlai Zhou   +6 more
doaj   +1 more source