This paper presents an investigation into the relative dielectric permittivity of railway ballast using groundpenetrating radar (GPR). To this effect, the experimental tests are carried out using a container (methacrylate material) of dimensions 1.5 x 1.5 x 0.5 m. GPR systems equipped with different ground-coupled and air-coupled antennas and central frequencies of 600 MH, 1000 MHz, 1600 MHz and 2000 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.
|Titolo:||An Investigation into the railway ballast dielectric properties using different GPR antennas and frequency systems|
|Data di pubblicazione:||2018|
|Citazione:||Tosti, F., BIANCHINI CIAMPOLI, L., CALVI, A., Alani, A.M., & BENEDETTO, A. (2018). An Investigation into the railway ballast dielectric properties using different GPR antennas and frequency systems. NDT & E INTERNATIONAL, 93, 131-140.|
|Appare nelle tipologie:||1.1 Articolo in rivista|