Results 31 to 40 of about 160,791 (207)

Railscan: A Tool for the Detection and Quantification of Rail Corrugation [PDF]

open access: yes, 2010
Rail corrugation is a phenomenon that leads to a waving in the rails with wavelengths typically between 3 cm and 100 cm and amplitude levels of several microns. The genesis of this waving is complex. Rail corrugation is a recognized problem that leads to excess vibration on the rails and vehicles to a point of reducing their life span and compromising ...
Rui Gomes   +4 more
openaire   +1 more source

Topology‐Orchestrated Multi‐physical Energy Control in Turtle Shell‐Inspired Metamaterials

open access: yesAdvanced Materials, Volume 38, Issue 47, 21 August 2026.
A turtle shell‐inspired lattice metamaterial efficiently manages acoustic, fluid‐thermal, and mechanical energy flows simultaneously. The unique hybrid‐coupling architecture achieves superior sound attenuation via pore‐cavity resonance, facilitates effective airflow transport, and maximizes mechanical energy absorption through multistage cell ...
Xi Wang   +3 more
wiley   +1 more source

Ohio Hub economic impact analysis. Slide presentation [PDF]

open access: yes, 2007
Title from PDF cover (viewed on Jan. 9, 2008).; "September 20, 2007."; Includes bibliographical references.; Harvested from the web on 1/8/08Gem Public Sector Services (GEM) was retained by the Ohio Rail Development Commission (ORDC) to evaluate the ...
Ohio Rail Development Commission.
core   +3 more sources

Rail Corrugation Characteristics of Cologne Egg Fastener Section in Small Radius Curve

open access: yesShock and Vibration, 2020
By analyzing the measured data of rail corrugation in a small radius curve track with Cologne fasteners, the typical passing frequencies of corrugation were obtained.
Zhiqiang Wang   +3 more
doaj   +1 more source

Integrated Design and Process Optimization of FDM‐Fabricated Hexagonal Architected Thin‐Walled PA12 Tubes for Improved Compressive and Energy Absorption Performance

open access: yesMacromolecular Materials and Engineering, Volume 311, Issue 8, August 2026.
FDM‐fabricated PA12 thin‐walled tubes with five hexagonal architected designs (D1–D5) of increasing nodal connectivity were investigated to determine the effects of wall architecture, layer height, and print angle orientation on compressive performance, energy absorption, and dimensional accuracy.
Vigneshwaran Karupaiah   +4 more
wiley   +1 more source

Reduction of Corrugation by Semi-Active Track [PDF]

open access: yes, 2004
This article discusses possibilities for application of semi-active actuators to reduce rail and wheel wear. A simple model of a vehicle/track interaction is presented. The model is extended with a model of semi-active actuators. The feedback control law
Preumont, A., Valasek, M., Vaculin, O.
core  

Cause Analysis of Rail Corrugation Based on Stick-slip Characteristics [PDF]

open access: yes, 2023
By analyzing the measured corrugation data, the cause of rail corrugation was discussed theoretically. Then, the vehicle-track coupling model was used to study the stick-slip characteristics of wheel-rail system.
Wang, Zhiqiang, Lei, Zhenyu
core   +1 more source

Liquid jet capabilities for ultrafast chemistry at the SwissFEL Alvra instrument

open access: yesJournal of Synchrotron Radiation, Volume 33, Issue 4, Page 1219-1235, July 2026.
The technical aspects of the Alvra endstation are outlined and its scientific capabilities are demonstrated with commissioning results obtained during the early years of SwissFEL's operation.The Alvra experimental station at the Swiss X‐ray free‐electron laser, SwissFEL, investigates ultrafast dynamics in chemical and biological systems using X‐ray ...
Claudio Cirelli   +9 more
wiley   +1 more source

THE URBAN METABOLISM OF FLOOD PROTECTION INFRASTRUCTURE IN JAKARTA, INDONESIA

open access: yesInternational Journal of Urban and Regional Research, Volume 50, Issue 3, Page 545-566, May 2026.
Abstract Investments in large‐scale climate infrastructures are central to emerging forms of climate urbanism. In Jakarta, flood protection infrastructures seek to protect the city from devastating flood events in anticipation of future catastrophes.
Sophie Webber, Wahyu Kusuma Astuti
wiley   +1 more source

Large Deformation Pile‐soil Interaction Under Lateral Vehicle Impact Using Hybrid SPH+FEM and EFG+FEM Models

open access: yesInternational Journal for Numerical and Analytical Methods in Geomechanics, Volume 50, Issue 5, Page 2648-2669, 10 April 2026.
ABSTRACT This study presents large deformation computational methods to simulate lateral vehicular impacts on steel piles in granular soil. Soil‐mounted longitudinal barrier systems rely on energy dissipation in both the piles and the surrounding soil to safely redirect errant vehicles, so dynamic pile‐soil interaction is important for design ...
Tewodros Y. Yosef   +6 more
wiley   +1 more source

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