Results 41 to 50 of about 4,571 (211)

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

Development of Rail Camera for Bridge inspection with Attitude Control using Thrust of Rotors

e-Journal of Nondestructive Testing
A lot of concrete structures are deteriorating to dangerous levels throughout Japan. These concrete structures need to be inspected regularly to ensure they are safe enough to be used.
Tatsuya Iwamoto, Kiyoteru Hayama, Hiroki Irie, Takeju Matsuka   +3 more
doaj   +1 more source

Concept, Tests, and Optimum Design of Novel Negative Stiffness Friction Dampers for Seismic Protection of Long‐Span Bridges

Earthquake Engineering &Structural Dynamics, EarlyView.
ABSTRACT Viscous dampers (VDs) are widely used to mitigate the excessive responses of long‐span bridges. However, VDs face some intricate challenges in engineering practices, including high damping coefficient requirement, potential base shear amplification and tremendous damping force under high velocity. To address these issues, this study develops a
Ruisheng Ma, Shaodong Jiang, Kun Xu, Qiang Han, Xiuli Du, Kaiming Bi   +5 more
wiley   +1 more source

Enhancing RCF rail defect inspection on the Serbian railway network [PDF]

Građevinski Materijali i Konstrukcije
The interaction between the wheel and the running rails within the railway system introduces intricate stress patterns, resulting in the formation of rolling contact fatigue (RCF) rail defects. The magnitude of this stress is contingent upon factors such
Popović Zdenka, Brajović Ljiljana, Mićić Milica, Lazarević Luka   +3 more
doaj   +1 more source

A Novel Bipolar DC Connection Strategy for Photovoltaic Power Plants With a 50% Reduction in DC Cabling Length

Energy Science &Engineering, EarlyView.
Bipolar configuration is a new topology in the direct current (DC) system of photovoltaic power plants, which is topologically analogous to the bipolar configuration utilised in High‐Voltage Direct Current power transmission systems. DC cable length and copper usage are reduced by 50% using a bipolar configuration.
Duško M. Tovilović, Željko R. Đurišić, Vladan R. Durković   +2 more
wiley   +1 more source

Ultrasonic Guided Waves-Based Monitoring of Rail Head: Laboratory and Field Tests

Advances in Civil Engineering, 2010
Recent train accidents have reaffirmed the need for developing a rail defect detection system more effective than that currently used. One of the most promising techniques in rail inspection is the use of ultrasonic guided waves and noncontact probes.
Piervincenzo Rizzo, Marcello Cammarata, Ivan Bartoli, Francesco Lanza di Scalea, Salvatore Salamone, Stefano Coccia, Robert Phillips   +6 more
doaj   +1 more source

Gait Adaptability Training Improves Gait in Spinocerebellar Ataxia Patients

Movement Disorders Clinical Practice, EarlyView.
Abstract Background Spinocerebellar ataxia (SCA) is a rare, genetic neurodegenerative movement disorder primarily affecting the cerebellum. So far, there is no available cure for SCA. However, evidence suggests that neurorehabilitation can alleviate symptoms.
Colette J.M. Reniers, Martin E. Johansson, Karen Huisman‐Venrooij, Ivan Toni, Vivian Weerdesteyn, Bart P.C. van de Warrenburg   +5 more
wiley   +1 more source

Rail Surface Inspection System Using Differential Topographic Images

IEEE Transactions on Industry Applications, 2020
This work was supported in part by the Project RTI2018-094849-B-I00 of the Spanish National Plan for Research, Development and Innovation and in part by the Project FUO-269-19 funded by ArcelorMittal Research, Innovation and Investment S.L.
Francisco J. delaCalle, Daniel F. Garcia, Ruben Usamentiaga   +2 more
openaire   +3 more sources

Analysis of the Crashworthiness of Novel Flax‐Fiber Hybrid Reinforced Three‐Dimensional Woven Composites

Polymer Composites, EarlyView.
Through‐thickness binder yarns in tailored three‐dimensional woven flax‐fiber composites stabilize damage propagation and promote progressive crushing, enhancing crashworthiness and energy absorption. ABSTRACT This study investigates the impact crashworthiness performance of flax‐fiber reinforced three‐dimensional (3D) composites through a ...
H. F. M. de Queiroz, A. Ciampaglia, M. D. Banea, R. Ciardiello   +3 more
wiley   +1 more source

Assessment of rail flaw inspection data [PDF]

AIP Conference Proceedings, 2000
This project is an analysis of rail flaw data from commercial inspection systems. The experimental test work was performed at the facilities of the Transportation Technology Center Inc. (TTCI). Six major railroads provided defective rail which had been removed from service. The rail, which contained a variety of defects was placed into a gauntlet track.
openaire   +1 more source