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

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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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Official URL: https://doi.org/10.1016/j.ndteint.2017.05.005

Abstract

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:	04 Nov 2024 12:07
URI:	https://repository.uwl.ac.uk/id/eprint/3307

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

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