Results 31 to 40 of about 403,839 (268)
Visual Measurement System for Wheel–Rail Lateral Position Evaluation
Sensors, 2021 Railway infrastructure must meet safety requirements concerning its construction and operation. Track geometry monitoring is one of the most important activities in maintaining the steady technical conditions of rail infrastructure.
Viktor Skrickij +5 more
doaj +1 more source
On geometry of tracks in dielectric nuclear track detectors [PDF]
Nuclear Instruments and Methods, 1971 Abstract Dielectric nuclear track detectors are now being utilized in a variety of research applications involving registration of heavily ionizing charged particles. Many situations call for the identification of particle charge Z , energy E , and possibly the mass M 1,2 ).
Henke, R.P., Benton, E.V.
openaire +2 more sources
Detecting Embankment Instability Using Measurable Track Geometry Data
Infrastructures, 2020 The British railway system is the oldest in the world. Most railway embankments are aged around 150 years old and the percentage of disruption reports that feature them is frequently higher than other types of railway infrastructure.
David Kite, Giulia Siino, Matthew Audley
doaj +1 more source
Quality Behaviour of Turnouts: Comparison, Problem Specification and Recommendation of Measures
Applied Sciences, 2023 For future requirements, asset management of turnouts needs to rely on data-based assessment tools. These tools must enable the quantification of quality behaviour of turnouts and identify causes of poor behaviour.
Markus Loidolt +5 more
doaj +1 more source
Detection of high-speed railway subsidence and geometry irregularity using terrestrial laser scanning [PDF]
, 2014 Subsidence and geometry deformation monitoring are essential for safe transportation on a high-speed railway. Terrestrial laser scanning (TLS) is able to collect dense three-dimensional point data from the survey scene and achieve highly accurate ...
Li, Nan +3 more
core +1 more source
Journal of Materials Research and Technology, 2023 Selective laser melting (SLM) is a common technique categorized as one of the metal Additive Manufacturing (AM) processes to efficiently manufacture complex geometries.
Zhiqiang Yan +7 more
doaj +1 more source
Performance of a Large-area GEM Detector Read Out with Wide Radial Zigzag Strips
, 2015 A 1-meter-long trapezoidal Triple-GEM detector with wide readout strips was tested in hadron beams at the Fermilab Test Beam Facility in October 2013. The readout strips have a special zigzag geometry and run along the radial direction with an azimuthal ...
Bhopatkar, Vallary +8 more
core +1 more source
Feedback control of unstable cellular solidification fronts [PDF]
, 2006 We present a numerical and experimental study of feedback control of unstable cellular patterns in directional solidification (DS). The sample, a dilute binary alloy, solidifies in a 2D geometry under a control scheme which applies local heating close to
A. J. Pons +8 more
core +5 more sources
Applied Sciences, 2021 The detection of track geometry parameters is essential for the safety of high-speed railway operation. To improve the accuracy and efficiency of the state detector of track geometry parameters, in this study we propose an inertial GNSS odometer ...
Xinchun Zhang, Ximin Cui, Bo Huang
doaj +1 more source
Refinements of the holonomic approximation lemma
, 2017 The holonomic approximation lemma of Eliashberg and Mishachev is a powerful tool in the philosophy of the $h-$principle. By carefully keeping track of the quantitative geometry behind the holonomic approximation process, we establish several refinements ...
Alvarez-Gavela, Daniel
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