Results 51 to 60 of about 580,864 (238)

Research on Track Irregularity Detection Algorithm Based on Data Fusion

open access: yes机车电传动, 2021
Aiming at the problem of track irregularity detection method and accuracy, a strap-down inertial navigation technology was proposed. A quaternion based "mathematical platform" was built.
Yi LI, Huan BAI, Yuanming LIU
doaj  

Research on Track Alignment Irregularity Prediction Models

open access: yes, 2010
Under repetitive trainloads, lateral track displacement causes alignment irregularities in ballasted track structures, which in turn leads to gradual track state deterioration.
R. K. Liu, R. Guo, F. T. Wang
core   +1 more source

Influence of Scan Strategies in Electron Beam Powder Bed Fusion on Solidification, Microstructure, and High‐Temperature Compressive Properties of γ′‐Strengthened Inconel 738LC

open access: yesAdvanced Engineering Materials, EarlyView.
Experiments and thermophysical simulations were conducted to investigate the electron beam powder bed fusion electron beam (PBF‐EB/M) process for the γ′‐strengthened nickel‐based superalloy Inconel 738LC. The results demonstrate the impact of process‐induced microstructural variations on high‐temperature mechanical behavior, providing a basis for ...
Jan Niklas Petenati   +11 more
wiley   +1 more source

Superlubricity and Corrosion Inhibition Properties of Solvate Ionic Liquids in Hybrid Carbon Fiber Reinforced Plastic–Steel Interfaces

open access: yesAdvanced Engineering Materials, EarlyView.
Solvate ionic liquids lubrication reduced the coefficient of friction by ∼60% compared to dry sliding, reaching steady‐state values as low as 0.04–0.05. Corrosion weight‐loss measurements in 1 M HCl further demonstrated significant inhibition behavior, with only 100 ppm of [Li(G3)][TFSI] (∼68.5 μL/L) reducing corrosion‐product weight loss by 63 ...
Sameh Dabees   +6 more
wiley   +1 more source

Mapping Law of CRTS Ⅱ Type Slab Ballastless Track Static Deformation Due to Subgrade Horizontal Deformation

open access: yesChengshi guidao jiaotong yanjiu
Objective Aiming at the insufficient control indexes for high-speed railway subgrade horizontal deformation currently, it is necessary to study the influence law and limit values of ballastless track subgrade horizontal deformation.
YIN Wei, NI Wanyu, YAN Guangpeng
doaj   +1 more source

Investigating the Effect of Inclination Angle and the Influence of Scan Parameters on the Appearance and Thermal and Mechanical Properties of Filigree Tension Rods of LPBF‐Manufactured NiTi Shape‐Memory Alloys

open access: yesAdvanced Engineering Materials, EarlyView.
This article investigates the dependence of the properties on the manufacturing orientation in the form of the inclination angle to the build plate of LPBF‐fabricated NiTi rods with a diameter of 150–220 µm. Metallographic, chemical, thermal, and mechanical characterization show behavior under identical manufacturing conditions that ranges from ...
Sandra Herzig   +2 more
wiley   +1 more source

MODELING OF DEVELOPMENT VERTICAL DEFORMATION OF RAILWAY TRACK

open access: yesNauka ta progres transportu, 2016
Purpose. State of railway track must meet the conditions of safety, comfort and smooth ride. The presence of irregularities deteriorates the dynamics of interaction of track and rolling stock, causes speed limiting, creates the possibility of movement ...
D. M. Kurhan
doaj   +1 more source

Railway track management based on vibration data of in-service train measured by a mobile device

open access: yesNihon Kikai Gakkai ronbunshu, 2022
Currently, the maintenance of railway tracks is carried out based on track irregularity measurement data. The vibration data of running vehicles are easy to measure and can be the base of track maintenance, but they have not been used by basic data of ...
Noriyuki SHINODA   +4 more
doaj   +1 more source

Influence of track flexibility and spatial coherence of track irregularity on vehicle-slab track interaction: frequency-domain analysis

open access: yes, 2020
A straightforward and practical method of frequency-domain analysis is developed for coupled vehicle-track system. The influence of the track flexibility and spatial coherence of irregularities on frequency response of vehicle-track systems are ...
Lu, T.   +3 more
core   +2 more sources

Morphology, Transport, and Dynamics of Protein Adsorption in Open‐Cell Metal Foam

open access: yesAdvanced Engineering Materials, EarlyView.
Stainless steel (SS) open‐cell foams are shown to adsorb more protein per unit area than previously reported 316L SS and chromium oxide surfaces under static and flow conditions. An integrated approach combining 3D pore imaging, flow simulation, and protein adsorption experiments characterizes the foam’s performance.
Chinmaya Prerana Inguva   +2 more
wiley   +1 more source

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