A spectral analysis of ground-penetrating radar data for the assessment of the railway ballast geometric properties

Bianchini Ciampoli, Luca, Tosti, Fabio ORCID: https://orcid.org/0000-0003-0291-9937, Brancadoro, Maria Giulia, D'Amico, Fabrizio, Alani, Amir and Benedetto, Andrea (2017) A spectral analysis of ground-penetrating radar data for the assessment of the railway ballast geometric properties. NDT & E International, 90. pp. 39-47. ISSN 0963-8695

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This paper presents a methodology for the assessment of railway ballast using ground-penetrating radar (GPR – 2 GHz horn antenna). The primary approach in this endeavour was the finite-difference time-domain (FDTD) simulations of ballast (a multi-stage process in terms of ballast size). To this effect, a combination of random-sequential adsorption (RSA) and FDTD algorithms were applied. The results of the numerical simulation then were used to compare with the experimental investigations results using a container (methacrylate material) of the 1.51.50.5m dimensions. Finally, the modelling of the frequency spectrum peak and the equivalent diameter of the ballast aggregates was developed.

Item Type: Article
Identifier: 10.1016/j.ndteint.2017.05.005
Additional Information: © 2017. This manuscript version is made available under the CC-BY-NC-ND 4.0 license http://creativecommons.org/licenses/by-nc-nd/4.0/
Keywords: ground-penetrating radar; GPR; railway ballast; grain size; frequency spectral domain; finite-difference time-domain (FDTD) simulation; random-sequential adsorption (RSA) paradigm
Subjects: Construction and engineering > Civil and environmental engineering
Construction and engineering > Digital signal processing
Construction and engineering > Electrical and electronic engineering
Construction and engineering > Civil and structural engineering
Construction and engineering
Depositing User: Fabio Tosti
Date Deposited: 07 May 2017 14:53
Last Modified: 06 Feb 2024 15:52
URI: https://repository.uwl.ac.uk/id/eprint/3307


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