Results 41 to 50 of about 1,769,252 (349)

Improving the activity of waste concrete recycled powder by a mechanical-microwave combing method [PDF]

open access: yesRailway Sciences
PurposeThe efficient utilization of recycled concrete powder (RCP) has attracted much attention. To break through the limitation of single activation technology of RCP, this study investigates the effects of a mechanical-microwave method on the ...
Henan Shi   +5 more
doaj   +1 more source

Monitoring and Expertise of Sections with a Sudden Change in Railway Track Stiffness—Transition Zones of Bridges

open access: yesBuildings, 2023
The subject of the research is the investigation of the behavior of railway tracks in places with a significant change in the stiffness of the track.
Stanislav Hodas   +2 more
doaj   +1 more source

Systematic Literature Review on Data-Driven Models for Predictive Maintenance of Railway Track: Implications in Geotechnical Engineering

open access: yesGéosciences, 2020
Conventional planning of maintenance and renewal work for railway track is based on heuristics and simple scheduling. The railway industry is now collecting a large amount of data with the fast-paced development of sensor technologies.
Jiawei Xie   +4 more
semanticscholar   +1 more source

Experimental investigation of the dynamic behavior of railway track with sleeper voids

open access: yesRailway Engineering Science, 2020
The deterioration of the sleeper support on the ballasted track begins with the accumulation of sleeper voids. The increased dynamic loading in the voided zone and the ballast contact conditions cause the accelerated growth of the settlements in the ...
M. Sysyn, O. Nabochenko, V. Kovalchuk
semanticscholar   +1 more source

Railway defect detection based on track geometry using supervised and unsupervised machine learning

open access: yesStructural Health Monitoring, 2022
Track quality affects passenger comfort and safety. To maintain the quality of the track, track geometry and track component defects are inspected routinely. Track geometry is inspected using a track geometry car (TGC).
Jessada Sresakoolchai, S. Kaewunruen
semanticscholar   +1 more source

Development of switching and adjustment devices for switch rails and proposal of a point of turnout to reduce maintenance labour

open access: yesNihon Kikai Gakkai ronbunshu
This study aims to develop switching and adjustment devices for switch rails, proposing a point of turnout that contributes to reduced maintenance efforts.
Shingo TAMAGAWA   +3 more
doaj   +1 more source

Verification of boundary conditions of numerical modeling of the track substructure thermal regime – influence of the snow cover [PDF]

open access: yesArchives of Transport, 2018
The initial part of the paper briefly characterizes a long-term experimental activity at the Department of Railway Engineering and Track Management (DRETM). The research of the DRETM focuses, besides other research activities and specific problems in the
Libor IŽVOLT, Peter DOBEŠ, Juraj PIEŠ
doaj   +1 more source

Adaptive Twisting Metamaterials

open access: yesAdvanced Materials, EarlyView.
This work introduces torque‐controlled twisting metamaterials as a transformative platform for adaptive crashworthiness. By combining multiscale predictive modeling with experimental validation on additively manufactured gyroids, it demonstrates tunable stiffness, collapse stress, and energy absorption.
Mattia Utzeri   +6 more
wiley   +1 more source

The method of intelligent wireless sensor to improve the water permeability of permeable asphalt concrete pavement

open access: yesIET Networks, EarlyView., 2022
Abstract This research aims to study the intelligent wireless sensor to improve the water permeability of permeable asphalt concrete pavement. The water permeability of pavement is extremely important for the traffic environment. This study first briefly introduces the background and significance analysis, and then exemplifies the deployment algorithm ...
Xingmei Zhang, Cong Xu, Qi Lei
wiley   +1 more source

FEATURES OF THE RESEARCH WORK ELEMENTS DEFORMABILITY OF RAILWAY TRACK

open access: yesNauka ta progres transportu, 2015
Purpose. The scientific paper is supposed the determination of basic physical and structural conditions in modeling life cycle of the elements of the railway line for the study of deformation processes as the basis of normative base of the track at the ...
I. O. Bondarenko
doaj   +1 more source

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