Results 61 to 70 of about 1,967 (202)

Study on the prediction of rolling contact crack initiation of rail material with surface defect

, 2022
The prediction of wheel-rail rolling contact fatigue (RCF) crack initiations is a critical task in rail operation, especially when material surface defects are presented at the wheel-rail interface.
Shuyue Zhang (11393954), Qing Wu (9847022), Qiyue Liu (17953352), Maksym Spiryagin (9836759), Wenjian Wang (314196)   +4 more
core   +1 more source

Research on Defect Detection on Steel Rails Based on Improved YOLO11n Algorithm

Applied Sciences
Aiming at the core issues of the traditional YOLO11n model in rail surface defect detection—fine-grained feature loss of small defects, insufficient micro-target recognition accuracy, and the mismatch of existing downsampling/fusion methods for micro ...
Hongyu Wang, Junmei Zhao
doaj   +1 more source

Sentipensar [Feel‐Thinking] Cultivates Collective Scientific Sensemaking and Worldbuilding Within and Beyond Ecological Despair

Science Education, EarlyView.
ABSTRACT Educating youth about environmental and climate justice is crucial in realizing a sustainable and flourishing future. Yet this can be challenging given the intense eco‐emotions youth experience and express while learning about these consequential realities and their implications.
Kelsie Fowler
wiley   +1 more source

Increasing the Reuse Potential of High‐Strength Steels by Extending the Fatigue Life through Surface Treatments

steel research international, EarlyView.
Surface reconditioning through mechanical and electrochemical polishing is shown to extend the fatigue life of predamaged 42CrMo4 steel by over 12 times. By removing ≈100 μm of surface material, surface‐driven fatigue damage is mitigated. This study introduces a reuse potential metric to evaluate fatigue recovery and support sustainable steel reuse. To
Ayush Shrivastava, Oguz Gulbay, Srinivasa Raghavan Raghuraman, Marion Kreins, Fabian Weber, Peter Starke, Alexander Gramlich, Ulrich Krupp   +7 more
wiley   +1 more source

Rail Surface Defect Detection and Severity Analysis using CNNs on Camera and Axle Box Acceleration Data [PDF]

, 2023
Rail surface defect detection is a relevant problem in the field of data-driven railway maintenance. Artificial intelligence and neural networks (NN) for axle box acceleration (ABA) or camera data show great potential for defect detection and ...
Lähns, Alexander, Baasch, Benjamin, Heusel, Judith, Jahan, Kanwal, Roth, Michael   +4 more
core  

Two-Stage Rail Defect Classification Based on Fuzzy Measure and Convolutional Neural Networks

, 2022
Railway transportation has gained importance with the development of high-speed trains in recent years. Problems that occur especially on the rail surface and fasteners during railway operation affect the operating safety of the train.
AKIN, ERHAN, AYDIN, İLHAN
core   +1 more source

Press Hardening for Sustainable Lightweight Chassis Design in Heavy‐Duty Vehicles: A Material Performance and Life Cycle Assessment Approach

steel research international, EarlyView.
The article explores how high‐strength steels and press hardening revolutionize lightweight chassis design for heavy‐duty vehicles. It reveals that press hardened steels combined with shot peening can cut weight by up to 34% and reduce environmental impact by 21%–32%.
Violeta Vargas‐Parra, Sergi Parareda, Jose Jorge Espí‐Gallart, Jaume Pujante, Gustaf Gustafsson, Henrik Sieurin, David Frómeta, Daniel Casellas   +7 more
wiley   +1 more source

Implications of water medium for the evolution of rolling contact fatigue under rail surface defect conditions

, 2022
With existing rail surface defects, third body mediums play an important role in the evolution of Rolling Contact Fatigue (RCF). This study investigates the effect of water mediums on the evolution process of RCF behavior on defective rails.
QY Liu (8426502), Shuyue Zhang (11393954), ZR Zhou (11611948), WJ Wang (11611945), Qing Wu (9847022), Q Lin (6624602), Maksym Spiryagin (9836759), HH Ding (11611942)   +7 more
core   +1 more source

Scale Levels of the Structure–Phase States and Fatigue Life of a Rail Steel after Electron-Beam Treatment

Успехи физики металлов, 2013
Investigations of the structure, phase composition, and defect substructure of the rail steel subjected to the electron-beam irradiation in different regimes and fatigue loading up to fracture are carried out by methods of scanning and transmission ...
V. E. Gromov, Yu. F. Ivanov, V. A. Grishunin, S. V. Raykov, S. V. Konovalov
doaj   +1 more source

Investigation of the Reoxidation and Material Behavior of Directly Reduced Pellets and Fines Under Simulated Rail Transport Conditions

steel research international, EarlyView.
The study investigates the reoxidation behavior of DRI pellets (Midrex and H2‐reduced) under realistic conditions, considering the test parameters of temperature, humidity, storage duration, particle size (including fine fraction), and container geometry. The samples are analyzed based on mass changes.
Bernd Taferner, Johannes Schenk, Richard Schanner, Peter Gluschitz, Jan Eisbacher‐Lubensky   +4 more
wiley   +1 more source