Results 61 to 70 of about 845 (210)
A multilevel track defects assessment framework based on vehicle body vibration
Computer-Aided Civil and Infrastructure Engineering, Volume 40, Issue 12, Page 1688-1720, 9 May 2025.Abstract High‐frequency detection of track defects is crucial for accurate track condition assessment and system safety. Onboard vibration data collection devices can significantly increase detection density without additional costs. However, defect assessment based on this is significantly challenging, including the spatial heterogeneity of track ...
Xingqingrong Chen +2 more
wiley +1 more source
Structure failure analysis on metro axle-box hanger due to modal resonance with rail corrugation
Advances in Mechanical Engineering, 2023 During the long-term service of a metro vehicle, different kinds of fracture failure occur on the bogie, with the axle-box hanger being a representative one.
Wenbiao Huo +5 more
doaj +1 more source
Design and Development of a Wayside AI‐Assisted Vision System for Online Train Wheel Inspection
Engineering Reports, Volume 7, Issue 1, January 2025.A vision inspection system for automated train wheel inspection was developed and tested. Our YOLOv9 model achieved a mAP50 of 0.94 and a recall of 0.91 for wheel segmentation, demonstrating high efficacy in capturing and analyzing wheel tread images for fault diagnosis.
Muhammad Zakir Shaikh +6 more
wiley +1 more source
Assessment of rail long-pitch corrugation
IOP Conference Series: Materials Science and Engineering, 2017 The paper focuses on defects of the running surface of the rail, namely the rail corrugation defect and specifically long-pitch corrugation in curves of small radii. These defects cause a shorter life of the rails, greater maintenance costs and increase the noise and vibration pollution.
Valehrach, Jan +3 more
openaire +2 more sources
Dis/incremental Dwelling and the Right to the Beach in Jamestown, Accra, Ghana
Antipode, Volume 57, Issue 1, Page 301-323, January 2025.Abstract In mid‐2020, the municipal authority of Accra, Ghana levelled the dwellings of approximately 450 residents remaining in an informal beach settlement in Jamestown, long the centre of an artisanal fishing economy. The destruction marked the culmination of at least four demolition cycles to clear ground for a Chinese‐financed commercial harbour ...
Bianca Malkoc, Leigh Johnson
wiley +1 more source
Reduction of Corrugation by Semi-Active Track
, 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
, 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
Nihon Kikai Gakkai ronbunshu, 2019 Rail corrugation is a periodic rail surface roughness that is formed as the rolling stock runs repeatedly on the rail. The rail corrugation occurs in various track alignment and track structures, but the generation mechanism and wavelength determination ...
Hirofumi TANAKA +3 more
doaj +1 more source
Is Your Supply Chain Breaking Down? Call AAA for Resilience Assistance
Journal of Business Logistics, Volume 46, Issue 1, January 2025.ABSTRACT Supply chain disruptions regularly interrupt the normal operations of organizations, impairing their financial, operational, and service performance. Therefore, organizations must develop capabilities to enhance their resilience–their ability to anticipate, overcome, and transform after disruptions.
Andrew Zeiser +4 more
wiley +1 more source
The development of rail-head acoustic roughness
, 2009 A model of the development of rail-head acoustic roughness on tangent track has been formulated. The model consists of a two-dimensional time domain wheel-rail interaction force calculation, with the normal force used as the input to a two-dimensional ...
Croft, Briony Elizabeth
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