Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
6758304 | NDT & E International | 2018 | 31 Pages |
Abstract
This paper presents an investigation into the relative dielectric permittivity of railway ballast using ground-penetrating radar (GPR). To this effect, the experimental tests are carried out using a container (methacrylate material) of dimensions 1.5Â ÃÂ 1.5Â ÃÂ 0.5Â m. GPR systems equipped with different ground-coupled and air-coupled antennas and central frequencies of 600Â MH, 1000Â MHz, 1600Â MHz and 2000Â MHz (standard and low-powered antenna systems) are used for testing purposes. Several processing methods are applied to assess and compare the dielectric permittivity of the ballast system under investigation. A comparison of the results identifies critical factors as well as antennas and central frequencies most suitable for the purpose.
Keywords
Related Topics
Physical Sciences and Engineering
Engineering
Civil and Structural Engineering
Authors
Fabio Tosti, Luca Bianchini Ciampoli, Alessandro Calvi, Amir M. Alani, Andrea Benedetto,