An Inspection of Railway Ballast Quality Using Ground
Some of the current research on GPR for railways involves detecting fouled ballast from a frequency analysis of the electromagnetic responses [59]. A measurement with both track stiffness and GPR ...
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(PDF) Evaluating the Properties of Railway Ballast …
railway ballast collected in Huntington, WV in Feb. 2022 by 400 MHz air-coupled antennas, and the Hilbert transform was chosen to compute the instantaneous frequency of the
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(PDF) State-of-the-Art Review of Ground Penetrating Radar …
1 Infrastructure Inspection Research Institute, China Academy of Railway Sciences Co., Ltd., Beijing 100081, China; wangshilei@rails ... Ballast Layer Electromagnetic Properties.
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A spectral analysis of ground-penetrating radar data for
These were towed along the rail sections by means of a dedicated railway cart. Main electromagnetic parameters of railway ballast were estimated for each scenario using time- and frequency-domain ...
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Electromagnetic properties of railway ballast
Electromagnetic properties of railway ballast. DOI: 10.1016/S0963-8695 (00)00006-2. Authors: M. R Clark. R Gillespie. T Kemp. D. M McCann. Show all 5 …
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(PDF) MODEL TRACK STUDIES BY GROUND …
Laboratory experiments were undertaken to identify and characterise the dielectric properties of railway track ballast using Ground Penetrating Radar (GPR). Better results were obtained with lower ...
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"Test-site operations for the health monitoring of railway ballast
Main electromagnetic parameters of railway ballast were estimated for each scenario using time- and frequency-domain signal processing techniques. Interpretation of the preliminary results has shown viability of the GPR method in detecting signs of decay at the network scale, thereby proving this technique to be worthy for implementation in ...
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Time-frequency characteristics of ground penetrating
Nevertheless, the application of GPR to assess the ballast condition is a challenging task because the material electromagnetic properties are sensitive to both the ballast grading and water content.
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Electromagnetic properties of railway ballast
Electromagnetic properties of railway ballast. In Railway Engineering-98 Proc 1st Int Conf Brunel Univ (pp. 4) Clark, M. R. ; Gillespie, R. ; Kemp, T. et al. / Electromagnetic …
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Sensors | Free Full-Text | State-of-the-Art Review of Ground …
In the past 20 years, many studies have been performed on ballast layer inspection and condition evaluation with ground penetrating radar (GPR). GPR is a non-destructive means that can reflect the ballast layer condition (fouling, moisture) by analysing the received signal variation. Even though GPR detection/inspection for …
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(PDF) Railroad Ballast Evaluation Using Ground-Penetrating …
Academia.edu is a platform for academics to share research papers. Railroad Ballast Evaluation Using Ground-Penetrating Radar Laboratory Investigation and Field Validation ... Electromagnetic Properties of Railway Ballast. NDT&E International Journal, Vol. 34, No. 5, 2001, pp. 305–311. 5. Silvast, M., M. Levomaki, A. Nurmikolu, …
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Discrete element modelling of railway ballast performance …
Railways play a significant role in the transportation system worldwide and work in many sectors (urban rail, high-speed railway, heavy haul, intercity and metro) [1, 2].Ballasted tracks, as the most widely used track type, consist of rails, sleepers and the ballast layer [3, 4].It possesses the advantages such as low construction cost, simple …
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Benchmarking large scale GPR experiments on railway ballast
The overall aim of this project was to relate ground penetrating radar (GPR) to a ballast fouling index (FI). Laboratory research aimed at characterising the electromagnetic properties has enabled researchers worldwide to determine ballast thickness using impulse ground penetrating radar (GPR) – based upon derived values of …
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Railway ballast fouling, inspection, and solutions
Ballast fouling occurs when the voids of granular particles are wholly or partially filled by fine particles. Railway ballast fouling is always an inevitable issue related to railway performance and safety in ballasted tracks. This paper presents an overview of the railway ballast fouling mechanism, current works, perspective, and innovation.
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Railway Ballast Fouling Detection Using GPR Data
ABSTRACT. Ground‐penetrating radar has been recently used for quantifying railway ballast fouling conditions. This paper discusses two approaches for processing …
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Development of material properties for railway application …
Based on in situ observations and laboratory tests of the materials taken from the site, and the values published for that particular type of ballast (granite) in various studies [31][32][33][34 ...
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An Investigation into the railway ballast dielectric …
Tosti et al. investigated the dielectric properties of a railway ballast using different GPR antennas and frequency systems [13]. Wang and Liu studied the shearlet transform to remove noise ...
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Time-Frequency Approach for Ground Penetrating Radar …
When ballast is fouled, especially by clay, its internal friction angle is undermined, with serious lowering of the strength properties and increase of deformation rates of the whole rail track-bed.
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Evaluating the Correlation Between the Geotechnical …
Evaluating the Correlation Between the Geotechnical Index and the Electromagnetic Properties of Fouled Ballasted Track by a Full-Scale Laboratory …
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An investigation into the railway ballast dielectric properties using
Non-destructive assessment of the electromagnetic properties of railway ballast aggregates. ... as indicated in several literature research [1], [31], [32]. Therefore, it can be argued that this antenna type is not well suited for the purpose of this study (i.e, the assessment of the dielectric permittivity of limestone railway ballast in clean ...
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A spectral analysis of ground-penetrating radar data for the …
Overall, the GPR-based research on railway ballast can be classified into i) research based on the analysis of the signal response in the time domain and ii) research based on the analysis of the signal spectrum in the frequency domain. ... Electromagnetic properties of railway ballast. NDT&E Int, 34 (5) (2001), pp. 305-311. View PDF View ...
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Railway ballast condition assessment using ground-penetrating …
Another research by L. Bianchini Ciampoli et al. examined the effects of particle size on the propagation and scattering of electromagnetic waves in railway ballast layers using the gprMax 2D ...
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State-of-the-Art Review of Ground Penetrating Radar (GPR) …
Infrastructure Inspection Research Institute, China Academy of Railway Sciences Co., Ltd., Beijing 100081, China. (4 authors) 2. School of Civil Engineering, Beijing Jiaotong University, Beijing 100044, China. ... Forde M. Electromagnetic properties of railway ballast. NDT E Int. 2001; 34:305–311. 10.1016/S0963-8695(00)00006-2. [Google ...
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Use of Ground Penetrating Radar in Condition Assessment of Railway Ballast
Ground Penetrating Radar (GPR), is a powerful non-destructive geophysical diagnosis method providing cost-efficient, time-saving and continuous railway ballast surveys. To that effect, this ...
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Railway Ballast Monitoring by GPR: A Test Site Investigation
Article. Railway ballast monitoring by GPR: a test site. investigation. Luca B ianchini Ciampoli*, Alessandro Calvi and Fabrizio D'Amico. 1 Department of Engineering, Roma Tre University, Via ...
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Railway ballast material selection and evaluation: A …
Abstract. The properties of railway ballast material are affected by the local geologies and climatic environments from which the parent rock is sourced. These …
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Railroad Ballast Evaluation Using Ground-Penetrating Radar:
The early detection of ballast fouling is of utmost importance to the safety of the rail system and its life-cycle cost-effectiveness. Ground-penetrating radar (GPR), a nondestructive evaluation tool, has shown its potential as a means of assessing the condition of the railroad substructure rapidly, effectively, and continuously.
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A spectral analysis of ground-penetrating radar data for the …
In view of this, information can be inferred about the layer thicknesses and the materials properties (Fig. 1). Overall, the GPR-based research on railway ballast can be classified into i) research based on the analysis of the signal response in the time domain and ii) research based on the analysis of the signal spectrum in the frequency domain.
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electromagnetic properties railway ballast research
electromagnetic properties railway ballast research Electromagnetic properties of railway ballast - ScienceDirect. 200171 1. To investigate whether the condition of the railway ballast can be classified by the dielectric constant, εr, — or the velocity of propagation of . Read More An investigation into the railway ballast dielectric
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electromagnetic properties railway ballast research
Assessment of Railway Track Substructure Condition Using rail ballast for sale perth dislessiavareseit. electromagnetic property of the layers is the dielectric permittivity which is a function of the density water content and type of material For railroad applications the GPR equipment is mounted on a hy rail vehicle with clearance between the antennas …
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