Wyniki wyszukiwania dla: GEORADAR GPR

• Zastosowanie georadaru do badań muru ceglanego

  Publikacja

  • J. Lachowicz

  - Rok 2015

  Postęp technologiczny w dziedzinie diagnostyki konstrukcji badaniami nieniszczącymi NDT (z ang. nondestructive testing) pozwala na coraz dokładniejsze określenie stanu technicznego danej konstrukcji. Jedną z tego rodzaju technik jest metoda georadarowa należąca do grupy metod elektromagnetycznych. Wykorzystuje ona zjawisko odbicia fali elektromagnetycznej na granicy ośrodków o różnych właściwościach elektrycznych. Metoda znalazła...

• GPR simulations for diagnostics of a reinforced concrete beam

  Publikacja

  • J. Lachowicz
  • M. Rucka

  - Rok 2016

  The most popular technique for modelling of an electromagnetic field, the finite difference time domain (FDTD) method, has recently become a popular technique as an interpretation tool for ground penetrating radar (GPR) measurements. The aim of this study is to detect the size and the position of damage in a reinforced concrete beam using GPR maps. Numerical simulations were carried out using the finite differ-ence time domain...

• GPR investigation of the strengthening system of a historic masonry tower

  Publikacja

  • M. Rucka
  • J. Lachowicz
  • M. Zielińska

  - JOURNAL OF APPLIED GEOPHYSICS - Rok 2016

  In this paper the condition assessment of the strengthening system of a masonry tower was carried out by the GPR method. The study provided unique experimental data acquired during measurements of the reinforced concrete frame embedded in masonry walls. Conducted numerical and experimental investigations were focused on the phenomenon of the diffraction-refraction scattering of the electromagnetic energy. A hyperbola resulting...

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• A concept of heterogeneous numerical model of concrete for GPR simulations

  Publikacja

  • J. Lachowicz
  • M. Rucka

  - Rok 2017

  The Ground Penetrating Radar (GPR) method, which is increasingly being used in the non-destructive diagnostics of reinforced concrete structures, often needs more accurate interpretation tools for analysis of experimental data. Recently, there has been growing interest in developing of various numerical models for exhaustive understanding of GPR data. This paper presents the concept of a heterogeneous numerical model of concrete,...

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• Application of gpr method in diagnostics of reinforced concrete structures

  Publikacja

  • J. Lachowicz
  • M. Rucka

  - Diagnostyka - Rok 2015

  This paper presents an application of the ground penetration method (GPR) for diagnostics of reinforced concrete structures. In situ measurements were conducted for three civil engineering structures: the ground floor structure, the abutment of the railway viaduct and the concrete well. The dual polarized ground penetrating radar with the antenna operating at a center frequency of 2 GHz was used for GPR surveys. Three different...

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• GPS SOLUTIONS

  Czasopisma

  ISSN: 1080-5370 , eISSN: 1521-1886

• Experimental and numerical investigations for GPR evaluation of reinforced concrete footbridge

  Publikacja

  • J. Lachowicz
  • M. Rucka

  - Rok 2016

  The GPR method has increasingly found application in non-destructive testing of reinforced concrete structures. This paper presents the new approach of modelling of the electromagnetic wave propagation for reinforced concrete structures with a complex system of the reinforcement. Simulations of the GPR field were performed on a three-dimensional model of a footbridge using the FDTD method. Numerical maps were compared with results...

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• Integrated Application of GPR and Ultrasonic Testing in the Diagnostics of a Historical Floor

  Publikacja

  • M. Rucka
  • E. Wojtczak
  • M. Zielińska

  - Materials - Rok 2020

  The paper presents the results of integrated ground penetrating radar (GPR) and ultrasonic testing (UT) measurements conducted on a historical floor in St. Nicholas’ Church, Gdańsk, Poland. The described inspection was the first stage of the technical state assessment of the building. The aim of the study was the detection of underfloor air gaps, which were observed in a few trial pits. The condition of the ground under the floor...

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• Numerical modeling of GPR field in damage detection of a reinforced concrete footbridge

  Publikacja

  • J. Lachowicz
  • M. Rucka

  - Diagnostyka - Rok 2016

  The paper presents a study on the use of the ground penetrating radar (GPR) method in diagnostics of a footbridge. It contains experimental investigations and numerical analyses of the electromagnetic field propagation using the finite difference time domain method (FDTD). The object of research was a reinforced concrete footbridge over a railway line. The calculations of the GPR field propagation were performed on a selected cross-section...

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• Diagnostics of pillars in St. Mary’s Church (Gdańsk, Poland) using the GPR method

  Publikacja

  • J. Lachowicz
  • M. Rucka

  - International Journal of Architectural Heritage - Rok 2019

  The main goal of this study was non-destructive evaluation of pillars in the St. Mary’s Church (Gdańsk, Poland) using the ground penetrating radar (GPR) technique. The GPR inspection was conducted on four brick masonry pillars and five pillars strengthened by reinforced concrete jacketing. Data were acquired with a 2 GHz antenna along longitudinal and transverse profiles. The study involved the estimation of the electromagnetic...

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