Results 71 to 80 of about 550,441 (188)

Efficient quantifying track structure cracks using deep learning

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 19, Page 2969-2986, 5 August 2025.
Abstract High‐speed railway ballastless track structure crack detection usually has a high demand for the efficiency of crack detection technology. To overcome the limitation that current crack quantification methods usually require multiple steps, this paper proposes an efficient quantification method for track structure cracks using deep learning ...
Hongshuo Sun, Li Song, Zhiwu Yu
wiley   +1 more source

Field Tests on Eco-Friendly Railway Precast Concrete Slab

Applied Sciences, 2020
This study focuses on evaluating the field performance of a newly developed eco-friendly precast concrete slab track structure for railway/subway systems in Seoul, South Korea.
Taehoon Koh, Moochul Shin
doaj   +1 more source

Parallel computing aided analyses of dynamic buckling for railway track infrastructure

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 19, Page 2943-2968, 5 August 2025.
Abstract This paper presents a scalable parallel computing framework for simulating track buckling under dynamic train loads, enabling large‐scale railway track stability analysis. A three‐dimensional (3D) track model is developed using finite element‐based Euler–Bernoulli beam formulations for rails, dynamic force inputs, and nonlinear interactions at
Dan Agustin, Qing Wu, Maksym Spiryagin, Colin Cole, Esteban Bernal   +4 more
wiley   +1 more source

Mechanical characteristic variation of ballastless track in high-speed railway: effect of train–track interaction and environment loads

Railway Engineering Science, 2020
Due to the fact that ballastless tracks in high-speed railways are not only subjected to repeated train–track dynamic interaction loads, but also suffer from complex environmental loads, the fundamental understanding of mechanical performance of ...
Shengyang Zhu, Jun Luo, Mingze Wang, Chengbiao Cai   +3 more
doaj   +1 more source

Numerical and Experimental Research on Identifying a Delamination in Ballastless Slab Track [PDF]

Materials, 2019
This paper aims to adopt the total focusing method (TFM) and wavenumber method for characterizing a delamination in ballastless slab track. Twelve dry point contact (DPC) transducers located at the upper surface of the slab track compose a linear array.
Guopeng Fan, Haiyan Zhang, Wenfa Zhu, Hui Zhang, Xiaodong Chai   +4 more
openaire   +2 more sources

Weak Supervision: A Survey on Predictive Maintenance

WIREs Data Mining and Knowledge Discovery, Volume 15, Issue 2, June 2025.
The authors conduct a comprehensive examination of Weakly Supervised Learning for Predictive Maintenance, the survey discusses the challenges and identifies open research lines. ABSTRACT The maintenance advancements achieved in Industry 4.0 generate large amounts of data, necessitating complete, accurate, and precise labels for training datasets to ...
Antonio M. Martínez‐Heredia, Sebastián Ventura   +1 more
wiley   +1 more source

Dynamic Response Analysis of Ballastless Tracks Considering the Temperature-Dependent Viscoelasticity of Cement-Emulsified Asphalt Mortar Based on a Vehicle–Track–Subgrade Coupled Model

Lubricants
This study aims to explore the dynamic response of ballastless tracks under various temperatures of the cement-emulsified asphalt (CA) mortar layer and other environmental factors.
Yunqing Chen, Bing Wu, Linquan Yao, Xianglong Su   +3 more
doaj   +1 more source

Influence of train speed and its mitigation measures in the short- and long-term performance of a ballastless transition zone

Railway Engineering Science, 2023
The ballastless track is nowadays the most popular railway system due to the required low number of maintenance operations and costs, despite the high investment.
Ana Ramos, Rui Calçada, António Gomes Correia   +2 more
doaj   +1 more source

Diagnosis of high‐speed railway ballastless track arching based on unsupervised learning framework

Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 11, Page 1445-1465, 30 April 2025.
Abstract Vehicle‐mounted detection methods have been widely applied in the maintenance of high‐speed railways (HSRs), providing feasibility for diagnosing ballastless track arching. However, applying detection data faces several key limitations: (1) The threshold mostly requires manual setting, making recognition accuracy highly subjective; (2) the ...
Xueyang Tang, Yi Wang, Xiaopei Cai, Fei Yang, Yue Hou   +4 more
wiley   +1 more source

FERROVIAS EM LAJE: o estado da arte [PDF]

, 2014
TCC (graduação) - Universidade Federal de Santa Catarina. Centro Tecnológico. Engenharia Civil.Existe uma demanda crescente no transporte ferroviário no mundo.
Olinger, Marcelo Salles
core