Electromagnetic properties of railway ballast.

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Electromagnetic properties of railway ballast.

Mensagem por Manuela » 08 Set 2016, 08:45

Autores: M.R. Clark, R. Gillespie, T. Kemp, D.M. McCann, M.C. Forde


Abstract:
Laboratory experiments were undertaken to identify and characterize the dielectric properties of railway track ballast using Ground Penetrating Radar (GPR). Better results were obtained with lower frequency antennas. Clear distinctions were obtained between wet and dry and clean and spent ballast. The laboratory experiment is described in detail and sample radar scan plots given – the final analysis of dielectric is also given. The implications of the findings for radar velocity are discussed. The application to identifying defects in railway track bed is discussed. 2001 Elsevier Science Ltd. All rights reserved.

Keywords: Ballast; Ground Penetrating Radar; Dielectric constant; Clutter.
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