1887

Abstract

Summary

The purpose of this paper was to apply a numerical model of a 2 GHz central frequency antenna, to understand the behavior of the waves generated with a GPR, when concrete samples were under study at different antenna positions. The GPR numerical model was created based on the FDTD method and GprMax software was used to provide the 2D numerical modeling. Numerical modeling results and their further parametrical analysis were very clarifying. Arrival times, velocity increments and relative amplitudes presented a pattern according to what it was expected, when the antenna was separated from the concrete sample more than 8 cm. Nevertheless, when this distance was closer than 8 cm, due to the signals overlap the concrete reflection arrival times were altered. Despite that, the relative amplitudes for these distances did present an exponential behaviour, in agreement with what it was expected.

Loading

Article metrics loading...

/content/papers/10.3997/2214-4609.201802473
2018-09-09
2024-04-24
Loading full text...

Full text loading...

References

  1. Martínez-Sala, R., Rodríguez-Abad, I., Mené-Aparicio, J. and Fernández, A.
    [2015] Study of the waterfront advance in hardened concrete by means of energy level increment analysis. 24th European Meeting of Environmental and Engineering Geophysics.
    [Google Scholar]
  2. Pajewski, L. and Benedetto, A.
    [2013] Proceedings of the First Action’s General Meeting (Rome). COST Action TU1208 Civil Engineering Applications of Ground Penetrating Radar. Publishing House: Aracne.
    [Google Scholar]
  3. Rodríguez-Abad, I.
    [2010] Evaluatión de la técnica no destructiva del georradar para la inspección, diagnóstico y análisis resistente de la madera. PhD ThesisUniversitat Politècnica de València.
    [Google Scholar]
  4. Rodríguez-Abad, I., Klysz, G., Martínez-Sala, R., Balayssac, J.P. and Mené, J.
    [2016] Waterfront depth analysis in hardened concrete by means of the nondestructive ground penetrating radar. IEEE Journal of Selected Topics in Applied Earth Observations and Remote Sensing, 9(1), 91–97.
    [Google Scholar]
  5. Sbartai, Z., Laurens, S., Balayssac, J.P., Ballivy, G. and Arliguie, G.
    [2006] Effect of concrete moisture on radar signal amplitude. ACI Materials Journal, 103(6), 419–426.
    [Google Scholar]
  6. Taflove, A.
    [1995] Computational Electrodynamics: The Finite-Difference Time-Domain Method. Artech House.
    [Google Scholar]
  7. Warren, C., Giannopoulos, A., and GiannakisI.
    [2016]. GprMax: Open source software to simulate electromagnetic wave propagation for Ground Penetrating Radar. Computer Physics Communications, 209, 163–170.
    [Google Scholar]
  8. Yelf, R. and Yelf, D.
    [2006] Where is the True Time Zero?Electromagnetic Phenomena, 7(1), 158–163.
    [Google Scholar]
http://instance.metastore.ingenta.com/content/papers/10.3997/2214-4609.201802473
Loading
/content/papers/10.3997/2214-4609.201802473
Loading

Data & Media loading...

This is a required field
Please enter a valid email address
Approval was a Success
Invalid data
An Error Occurred
Approval was partially successful, following selected items could not be processed due to error