Results 61 to 70 of about 5,176,577 (228)
Disc machine testing to assess the life of surface-damaged railway track
, 2001 Wheel-rail contacts operate in an arduous and contaminated environment. Railway track running surfaces can become damaged either prior to or during operation.
Gao, N., Grieve, D.G., Dwyer-Joyce, R.S.
core +1 more source
, 2021 Regulatory and special visual inspection of railway tracks is important to ensure the safe and secure operation of trains. Due to increased traffic volumes, operational speeds and axle loads, new technologies are emerging to collect and monitor data more
Hendry, Michael T. +3 more
core
Deep Underground Science and Engineering, EarlyView.This paper explores how climate‐resilient technologies, such as smart grids, digital twins, and self‐healing materials, can enhance urban resilience. It highlights the urgent need for proactive planning, public‐private collaboration, and data‐driven innovation to future‐proof underground infrastructure amid accelerating climate and urban pressures ...
Kai Chen Goh +12 more
wiley +1 more source
Research on Defect Detection on Steel Rails Based on Improved YOLO11n Algorithm
Applied SciencesAiming 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
Seismic analysis and design of tunnels within fault ground: A review
Deep Underground Science and Engineering, EarlyView.The research methods of seismic response of tunnels within fault ground, including field investigations, analytical solutions, physical experiments, and numerical simulations, and seismic countermeasures are discussed. The present study examines the shortcomings and limitations of the current research and design, and puts forward proposals for future ...
Xingda Wang +6 more
wiley +1 more source
Improved YOLOv8n for Lightweight Rail Surface Defect Detection
TechnologiesRail-surface defects are often small, low-contrast, and confused with steel texture or reflections, making it difficult to improve accuracy without increasing model cost.
Lei Wang +4 more
doaj +1 more source
Carbon emission assessment of tunnel infrastructures: From construction to operation
Deep Underground Science and Engineering, EarlyView.This study develops a lifecycle carbon accounting framework for tunnel infrastructures, covering design, construction, operation, maintenance, and dismantling. Applied to a subsea tunnel case, the framework reveals the carbon emission distribution among four typical tunnel types and highlights potential carbon offset methods for low‐carbon tunnel ...
Luyuan Long +4 more
wiley +1 more source
Highly Nonlinear Solitary Waves for Rail Buckling Prevention [PDF]
, 2013 One of the major structural problems in the railroads made of continuous welded rails is buckling in hot weather and breakage or pulling apart in cold weather.
Cai, Luyao
core
Design and Development of Novel Airway Device for Transoral Respiratory Monitoring During Sedation
The Laryngoscope, EarlyView.This article describes iterative design factors and results of clinical testing for a novel medical device that promotes transoral respiratory gas exchange for patients during sedation. A minimally viable prototype was 3D printed from thermoplastic polyurethane and demonstrated high levels of oral retention, gas exchange, and satisfaction among ...
Samuel L. Oyer +7 more
wiley +1 more source
Signature analysis on wheel-rail interaction for rail defect detection [PDF]
, 2008 Fibre Bragg Grating (FBG) sensors have been installed along an existing line for the purposes of train detection and weight measurement. The results show fair accuracy and high resolution on the vertical force acted on track when the train wheels are ...
K.H. Ho +25 more
core +1 more source