Results 11 to 20 of about 1,446,410 (276)

Monitoring of the Track Geometry Quality Around the Portals of New Tunnel Construction Turecky Vrch - Preliminary Results

open access: yesCommunications, 2014
At the beginning, the contribution deals with the characteristics of conventional structure (track skeleton placed in the ballast) and unconventional structure (slab track) of railway superstructure.
Libor Izvolt   +3 more
doaj   +2 more sources

A Track Geometry Measuring System Based on Multibody Kinematics, Inertial Sensors and Computer Vision. [PDF]

open access: yesSensors (Basel), 2021
Nº Artículo: 683This paper describes the kinematics used for the calculation of track geometric irregularities of a new Track Geometry Measuring System (TGMS) to be installed in railway vehicles.
Escalona JL, Urda P, Muñoz S.
europepmc   +2 more sources

A Methodology Linking Tamping Processes and Railway Track Behaviour

open access: yesApplied Sciences, 2023
Today’s railway transport is built upon high-performance infrastructure. Cost-effective yet sustainable infrastructure presumes tracks with a precise and durable geometry. At ballasted tracks, the geometry is created and restored through tamping machines,
Stefan Offenbacher   +3 more
doaj   +1 more source

Assessing the Role of Longitudinal Variability of Vertical Track Stiffness in the Long-Term Deterioration [PDF]

open access: yes, 2016
The performance of the railway system in terms of dynamic loading is depending mainly on the track support conditions. Usually, the track stiffness is used as the main parameter to describe the support conditions and is defined as the ratio of the load ...
Grossoni, I.   +5 more
core   +3 more sources

INFLUENCE OF TRACK GEOMETRY CONDITION MONITORING ON RAILWAY INFRASTRUCTURE MAINTENANCE PROCESSING [PDF]

open access: yesTransport Problems, 2022
This study analyzed the usage of data of track geometry measurement for railway infrastructure maintenance processing support and estimated its influence on railway infrastructure maintenance decision-making.
Gintautas BUREIKA   +3 more
doaj   +1 more source

Dimension reduction techniques in track geometry quality analysis and safety

open access: yes, 2021
Attoh-Okine, Nii O.Federal Railroad Administration (FRA) annual safety data has consistently shown that 30-40% of train accidents are track-related.
Lasisi, Ahmed
core   +1 more source

Track geometry quality assessments for turnouts

open access: yesTransportation Engineering, 2023
Turnouts are necessary, frequent and cost intensive. Despite the railway sector's focus on automation, the condition assessment of turnouts is still mostly done manually by responsible staff inspecting the turnout.
Markus Loidolt   +2 more
doaj   +1 more source

Performance-based track geometry and the track geometry interaction map

open access: yesProceedings of the Institution of Mechanical Engineers, Part F: Journal of Rail and Rapid Transit, 2008
The track geometry interaction map (TGIM) is proposed as an effective way to evaluate the impact of multiple track geometry parameters on rail safety. Multi-body dynamics software has been used to simulate vehicle performance over tracks containing a large number of randomly generated lateral and vertical track geometry combinations.
Liu, Yan, Magel, Eric
openaire   +4 more sources

Predicting track geometry using machine-learning methods

open access: yes, 2023
Zarembski, Allan M.The track is an essential and critical component of the railway system, playing a vital role in ensuring the safe and efficient transportation of people and goods.
Ahmed, Mohammed
core   +1 more source

Improved maintenance planning of railway tracks based on onboard vibration measurements using smartphones [PDF]

open access: yesمدیریت مهندسی و رایانش نرم
With the increase in train speed, railway traffic has grown significantly in terms of both passenger numbers and cargo weight. Speed, weight, and rail traffic collectively impact rail track quality.
Babak Javadi   +3 more
doaj   +1 more source

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