Lecture notes in networks and systems, Journal Year: 2023, Volume and Issue: unknown, P. 378 - 389
Published: Jan. 1, 2023
Language: Английский
Advances in Mechanical Engineering, Journal Year: 2025, Volume and Issue: 17(1)
Published: Jan. 1, 2025
The efficiency and availability of modern railway infrastructure plays an increasingly strategic role in the sustainability, development prosperity communities nations. Recent Artificial Intelligence (AI) algorithms, which enable use digital tools such as Data-Driven models that can automatically adapt system operation, make decisions suggest strategies based on collected data, form basis Predictive Maintenance (PdM). PdM is considered a key opportunity for accurate Structural Health Monitoring (SHM), especially infrastructure, where transition from traditional preventive or periodic maintenance to will reduce intervention times costs. Furthermore, by directly correlating actual conditions with measured information, SHM utilise limited number sensors installed critical components insulated rail joints. This review starts clearly describing different up monitoring systems currently technical performance parameters indicate their health status goes examine issues related tools. All these topics are summarised provide effective theoretical practical knowledge better understand current transformation sector predict future developments.
Language: Английский
Citations
2
Crystals, Journal Year: 2024, Volume and Issue: 14(4), P. 335 - 335
Published: March 31, 2024
In the conditions of an energy crisis, important issue is increase in efficiency and productivity welding hardfacing processes. The article substantiates perspective using exothermic additives introduced into core filler for flux-cored wire arc processes as a relatively cheap additional heat source, reducing consumption when melting materials, increasing deposition rate. mixture design (MD) was selected method to optimize average values current voltage, well stability parameters depending on composition. This studies influence introduction addition (EA), ratios CuO/C CuO/Al FCAW S process. Parameters characterizing were determined oscillograph, from obtained oscillograms, analysis conducted voltage signals during welding. It that various methods can be used evaluate stability, which divided two groups: graphical (current cyclograms, box plots with frequency histograms, ellipse plotted current, cyclograms) statistical (standard variation coefficients voltage). this paper, comprehensive evaluation composition cored carried out. most stable observed electrode content at level EA = 26.5–28.58 wt.% high carbon (low 3.75). Conversely, lowest (CV(U) Std(U)) ratio ≥ 4.5 below < 29 wt.%. Mathematical models mean values, standard deviation, coefficient developed. results indicated response surface prediction had good accuracy ability. developed mathematical showed oxidizing agent (CuO/Al) greatest characteristics under investigation. percentage (EA) only affected (Iaw) (Uaw). graphite expressed through significant impact (CV(U)). Two optimization: deviation (Std(U)). best CuO-Al 3.6–3.9, 3.5–4.26, 29–38 also explained by their elemental (copper, cupric oxide (CuO), Al2O3). more complete reaction, higher amount easily vaporized copper (Cu) plasma, enhancing stability. microstructure deposited metal Fe-Cr-Cu-Ti alloy system investigated.
Language: Английский
Citations
9
Transportation research procedia, Journal Year: 2024, Volume and Issue: 77, P. 10 - 17
Published: Jan. 1, 2024
Provision of functional safety a railway track requires complementing the existing system assessment condition with stress-strain behaviour rail substructure, i.e. effect structure elasticity on change its geometric parameters during rolling stock passage over time. There is lack available theoretical and practical information about any pivotal changes in this field science. The subject study in-situ indicators monitoring or similar obtained by numerical processing data provided measuring systems recording car enabling determination irregularity time taking into account tonnage passed. outcome investigation proposed approach to development an unparalleled diagnostic loading which has been missing part "puzzle" integrated technical track.
Language: Английский
Citations
5
Alexandria Engineering Journal, Journal Year: 2024, Volume and Issue: 102, P. 75 - 81
Published: June 5, 2024
Excessive ballasted track deformations may occur during the railway operations due to poor load bearing capacity of embankment (placed soil or natural ground) manifest accumulation subsidence caused by consolidation and passage trains. The principles pressure grouting (or jet-grouting) technologies, used create reinforcement elements for rail trackbed stabilization, are presented, with reference specific construction condition on an existing in-service track. A single-track railway, including superstructure substructure components, was modeled using finite element method (FEM). Some stabilization options, based installation grouted micropiles according different layout configurations, were considered. results numerical analyses, in form stress strain behavior whole structure, demonstrated that use jet-grouted is a rational less expensive option, which can be installed close track, having positive effects limiting vertical without affecting expected distribution states middle.
Language: Английский
Citations
5
Sustainability, Journal Year: 2023, Volume and Issue: 15(6), P. 5356 - 5356
Published: March 17, 2023
The dynamic process of the railway track–rolling stock interaction is characterized by time-dependent dynamics that are determined both varying characteristics objects and climatic conditions. This study investigated effect different groups influence on process, with a view towards reduction cases randomness during registration in experiments an expansion understanding processes happening assessment registered data. static nature rolling has been demonstrated to be not uniform scattering values under variation vertical horizontal forces due stock. position truck relative track axis movement shown enhance non-uniformity. results longitudinal force measurements three-point Schlumpf methods have suggested it necessary investigate rail warping action wheels. To output experiments, proposed consider only stiffness basis oscillatory imitate physical oscillation system elements means amplitude, but also time response using assessing triggering rather than frequencies processes.
Language: Английский
Citations
11
Future Internet, Journal Year: 2023, Volume and Issue: 15(11), P. 347 - 347
Published: Oct. 25, 2023
This article presents a review of cutting-edge technologies poised to shape the future railway transportation systems, focusing on enhancing their intelligence, safety, and environmental sustainability. It illustrates key aspects energy-transport-information/communication system nexus as framework for systems development. Initially, we provide existing challenges within realm transportation. Subsequently, delve into emerging propulsion technologies, which are pivotal ensuring sustainability These include innovative solutions such alternative fuel-based hydrogen fuel cells, energy storage geared towards harnessing kinetic facilitating power transfer. In following section, turn our attention information telecommunication including Long-Term Evolution (LTE) fifth generation New Radio (5G NR) networks tailored applications. Additionally, integral role played by Industrial Internet Things (Industrial IoT) in this evolving landscape. Concluding analysis, examine integration communication remote sensor context Industry 4.0. leveraging pertaining infrastructure promises bolster efficiency, resilience ecosystem. Furthermore, significance smart grid transport, along with indispensable resources required bring forth vision energy-smart railways.
Language: Английский
Citations
10
Sustainability, Journal Year: 2024, Volume and Issue: 16(8), P. 3180 - 3180
Published: April 10, 2024
Assessing the technical condition of a railway track throughout its service life is crucial to ensuring functional safety. However, it important note that current approaches have theoretical and practical gaps require attention. The purpose this study discuss reconceptualization an integrated approach assess changes in tracks caused by rolling stock over their life. Improving existing systems for assessing can be achieved modifying model concept and, subsequently, measurement assessment procedures. This paper presents alternative method addressing issues related monitoring diagnosis tracks, with particular focus on natural phenomena: energy transfer elastic waves. primary aim work propose designing ‘closed’ system enables tracking cause-and-effect relationship. takes into account both dissipative characteristics track–rolling interaction influence dynamics various components ‘train-track’ system.
Language: Английский
Citations
1
Lecture notes in intelligent transportation and infrastructure, Journal Year: 2024, Volume and Issue: unknown, P. 529 - 538
Published: Jan. 1, 2024
Language: Английский
Citations
0
Lecture notes in networks and systems, Journal Year: 2023, Volume and Issue: unknown, P. 378 - 389
Published: Jan. 1, 2023
Language: Английский
Citations
1