Results 51 to 60 of about 7,617 (237)

Thermo-mechanical Coupling of Pantograph-Catenary System under Different Ambient Temperatures

open access: yesChengshi guidao jiaotong yanjiu
[Objective] Under extreme ambient temperatures, issues such as excessive temperature rise and intensified contact force fluctuation readily occur in the PC (pantograph-catenary) contact zone.
JIANG Hangyan   +5 more
doaj   +1 more source

Influence of Thermal Cycling on Friction, Wear, and Damage Evolution of Fused Deposition Modeling of 3D‐Printed Glass Fiber Reinforced Polylactic Acid Composites

open access: yesPolymer Composites, EarlyView.
Schematic illustration of the experimental procedure of the specimens. ABSTRACT This research work investigated the effect of the cyclic thermo‐hygrometric aging regime between −20°C and +40°C with 0–400 cycles on the reciprocating tribological properties of fused deposition modeling (FDM) printed polylactic acid (PLA) and the same material reinforced ...
Sinan Fidan   +5 more
wiley   +1 more source

Impact Response of Composite Material Equipment Cabin Floor Considering Strain Rate Effects

open access: yesChengshi guidao jiaotong yanjiu
ObjectiveCFRP (carbon fiber reinforced polymer) and GFRP (glass fiber reinforced polymer) have been applied to the structure of rail transit vehicle equipment cabin.
Yuke WANG   +5 more
doaj   +1 more source

Combined Effects of Thermal Cycling Aging and Reinforcement Content on the Ball‐On‐Disk Wear of Additively Manufactured Polylactic Acid Composites

open access: yesPolymer Composites, EarlyView.
Thermal Aging and Tribological Tests of Additive Manufactured PLA Composites. ABSTRACT This study focuses on the additive manufacturing of pure polylactic acid (PLA) specimens and milled glass fiber (GF)‐filled PLA composites under thermal cycling aging and wear tests. Wear tracks have been analyzed via 3D optical profiling and SEM imaging.
Sinan Fidan   +5 more
wiley   +1 more source

Review on Rail Damage Detection Technologies for High-Speed Trains

open access: yesApplied Sciences
From the point of view of the intelligent operation and maintenance of high-speed train tracks, this paper examines the research status of high-speed train rail damage detection technology in the field of high-speed train track operation and maintenance ...
Yu Wang   +4 more
doaj   +1 more source

Sustainable Cities Under Pressure: Climate Risk, Oil Price Uncertainty, and Technological Innovation in GCC Countries

open access: yesSustainable Development, EarlyView.
ABSTRACT This study examines the dynamic interactions between climate risk, oil price uncertainty (OPU), and technological innovation in shaping Sustainable Development Goals (SDGs) related to Sustainable Cities and Communities (SCC) across Gulf Cooperation Council (GCC) countries from 2005 to 2024. Using a panel Time‐Varying Interactive Fixed Effects (
Mohamed Sami Ben Ali   +2 more
wiley   +1 more source

Analysis of the Impact of Frog Wear on the Wheel–Rail Dynamic Performance in Turnout Zones of Urban Rail Transit Lines

open access: yesLubricants
To investigate how severe wear at No. 12 turnout frogs in an urban rail transit line operating at speeds over 120 km/h on the dynamic performance of the vehicle, a vehicle–frog coupled dynamic model was established by employing the 2021 version of ...
Yanlei Li   +4 more
doaj   +1 more source

Kinematic running resistance of an urban rail vehicle undercarriage: a study of the impact of wheel design. [PDF]

open access: yesSci Rep, 2023
Semenov S   +7 more
europepmc   +1 more source

The Relation Between Ergonomics and Environmental Sustainability: A Bibliometric Analysis and Scoping Review

open access: yesSustainable Development, EarlyView.
ABSTRACT This study investigates the relationship between ergonomics and environmental sustainability through a combined bibliometric analysis and scoping review. A search across four major databases identified 1081 articles, of which 82 were included in the final analysis.
Matteo Gremo   +4 more
wiley   +1 more source

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