Results 61 to 70 of about 5,108,447 (194)

Digital documentation of railway tunnel inspection in Austria

Civil Engineering Design, Volume 7, Issue 1, Page 3-8, March 2025.
Abstract Infrastructure, especially railway tunnels, require continuous inspection to ensure their safety. Furthermore, the detection of damages at an early stage can improve their service life. These tasks represent a major challenge for those involved and the tunnel down time is a disruption in operation.
Matthias J. Rebhan, Stefan S. Grubinger, Andreas Schüppel, Simona Deutinger, Gernot Schwarzenberger   +4 more
wiley   +1 more source

Single Atoms Induced Electron Transfer and Spin Polarization for High‐Performance Asymmetric Supercapacitors

Carbon Energy, EarlyView.
Contributed by the introduction of Cu SAs, extra electron transfer, and spin polarization to Cooh can be induced for optimizing electronic structure, contributing to fast electron conduction, enhanced capacitive reactions and accelerated ion diffusion. ABSTRACT Features of low cost and high theoretical capacity render transition metal oxides (TMOs) as ...
Qingjie Lu, Tong Zhou, Mingpeng Chen, Yumin Zhang, Huachuan Sun, Xiaoqu Wang, Baoye Zi, Bo Li, Jin Zhang, Zhongqi Zhu, Qingju Liu   +10 more
wiley   +1 more source

Strengthening urban resilience in China through underground infrastructures management: Addressing global climate challenges with technological solutions

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, Tonni Agustiono Kurniawan, Christia Meidiana, Abdelkader Anouzla, Faissal Aziz, Imran Ali, Joan Cecilia C. Casila, M. Imran Khan, Dongdong Zhang, Meihui Jiang, Mohd Hafiz Dzarfan Othman, Md Munir Hayet Khan, Kasun Kumara Dissanayake   +12 more
wiley   +1 more source

Evaluation of ride quality and rail surface roughness from vibration analysis of in-service passenger rail cars

, 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., Roghani, Alireza, Abdulrazagh, Parisa Haji, Toma, Elton   +3 more
core  

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, Yujing Jiang, Xuepeng Zhang, Yuyong Jiao, Ningbo Li, Xiao Wang, Bo Li   +6 more
wiley   +1 more source

On the scattering of torsional elastic waves from axisymmetric defects in coated pipes [PDF]

, 2012
This is the post-print version of the Article - Copyright @ 2012 ElsevierLong range ultrasonic testing is now a well established method for examining in-service degradation in pipelines.
Mudge, P, Zlatev, Z, Kirby, R
core   +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, Wout Broere, Xuehui Zhang, Tian Xia, Richard de Nijs   +4 more
wiley   +1 more source

Rail rolling contact fatigue formation and evolution with surface defects

, 2022
Surface defects can induce serious rolling contact fatigue (RCF) damage at wheel/rail interfaces and even cause fracture failure of rail material. This study aims to explore the formation mechanism of surface defects on rails, and to trace the evolution ...
QY Liu (8426502), Shuyue Zhang (11393954), J Guo (7052093), Qing Wu (9847022), WJ Wang (11611945), Maksym Spiryagin (9836759), HH Ding (11611942)   +6 more
core   +1 more source

An end-to-end approach to detect railway track defects based on supervised and self-supervised learning

Results in Engineering
Railway infrastructure is critical for the safe and efficient transportation of goods and people. However, defects in rail tracks can lead to severe accidents, resulting in significant human and financial losses. This study presents the development of an
Muhammad Haroon, Muhammad Jawad Khan, Hammad M Cheema, Muhammad Tauseef Nasir, Muhammad Safdar, Shahid Ikram Ullah Butt   +5 more
doaj   +1 more source

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, Noah Thornton, Michael Epps, Kareem Hassan, William Sande, Shreya Mandava, Matthew Thames, Claudia Gutierrez   +7 more
wiley   +1 more source