SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS
he present article focuses on GPR tomography method potential aimed at the search of functional voids and estimation of their sizes in engineering structures. The size of voids is assumed to be greater than the wavelength for usable frequency. Two examples of the GPR tomographic survey are examined...
Main Authors: | , , |
---|---|
Format: | Article |
Language: | English |
Published: |
Publishing House ASV
2017-03-01
|
Series: | International Journal for Computational Civil and Structural Engineering |
Subjects: | |
Online Access: | http://ijccse.iasv.ru/article/view/25 |
id |
doaj-af8fdf8c143b40e2843e8e84ab123285 |
---|---|
record_format |
Article |
spelling |
doaj-af8fdf8c143b40e2843e8e84ab1232852020-11-24T22:33:51ZengPublishing House ASVInternational Journal for Computational Civil and Structural Engineering2587-96182588-01952017-03-0113110.22337/2587-9618-2017-13-1-94-109SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNSMarina S. Sudakova0Eugeniya B. Terentieva1Alexey Yu. Kalashnikov2Lomonosov Moscow State University, Moscow, RUSSIADepartment of Seismometry and Geoacoustic, Geology faculty, Moscow State University M.V. LomonosovDepartment of Seismometry and Geoacoustic, Geology faculty, Moscow State University M.V. Lomonosov he present article focuses on GPR tomography method potential aimed at the search of functional voids and estimation of their sizes in engineering structures. The size of voids is assumed to be greater than the wavelength for usable frequency. Two examples of the GPR tomographic survey are examined: 1) a square con-crete pillar with granite coating and a square void in the center, 2) cylindrical granite column with functional spherical void which has iron walls. The following issues are considered in the article: the method, the structure of the acquired data, the picking of wanted waves, the analysis of tomographic inversion result, compared with the result of commonly used single-fold antenna geometry GPR. As a result of the research performed it was demonstrated that GPR tomography represents a good solution for the problem of detection, delineation and characterization of voids inside engineering structures. The velocity of electromagnetic waves propagated within the solid part of the column (concrete and granite) was accurately measured. The measured velocity can be con-sidered to the basis for physical properties estimation, for example humidity, voids ratio etc. The acquired quan-titative results are characterized by high quality and are more reliable compared to the results of single-fold GPR survey. http://ijccse.iasv.ru/article/view/25Non-destructive testing, electromagnetic methods, forward and inverse problem solving, mathematical modelling, ground penetrating radar, tomography |
collection |
DOAJ |
language |
English |
format |
Article |
sources |
DOAJ |
author |
Marina S. Sudakova Eugeniya B. Terentieva Alexey Yu. Kalashnikov |
spellingShingle |
Marina S. Sudakova Eugeniya B. Terentieva Alexey Yu. Kalashnikov SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS International Journal for Computational Civil and Structural Engineering Non-destructive testing, electromagnetic methods, forward and inverse problem solving, mathematical modelling, ground penetrating radar, tomography |
author_facet |
Marina S. Sudakova Eugeniya B. Terentieva Alexey Yu. Kalashnikov |
author_sort |
Marina S. Sudakova |
title |
SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS |
title_short |
SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS |
title_full |
SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS |
title_fullStr |
SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS |
title_full_unstemmed |
SEARCHING AND MEASUREMENT OF FUNCTIONAL VOIDS BY MEANS OF GPR TOMOGRAPHY BY THE EXAMPLE OF TWO COLUMNS |
title_sort |
searching and measurement of functional voids by means of gpr tomography by the example of two columns |
publisher |
Publishing House ASV |
series |
International Journal for Computational Civil and Structural Engineering |
issn |
2587-9618 2588-0195 |
publishDate |
2017-03-01 |
description |
he present article focuses on GPR tomography method potential aimed at the search of functional voids and estimation of their sizes in engineering structures. The size of voids is assumed to be greater than the wavelength for usable frequency. Two examples of the GPR tomographic survey are examined: 1) a square con-crete pillar with granite coating and a square void in the center, 2) cylindrical granite column with functional spherical void which has iron walls. The following issues are considered in the article: the method, the structure of the acquired data, the picking of wanted waves, the analysis of tomographic inversion result, compared with the result of commonly used single-fold antenna geometry GPR. As a result of the research performed it was demonstrated that GPR tomography represents a good solution for the problem of detection, delineation and characterization of voids inside engineering structures. The velocity of electromagnetic waves propagated within the solid part of the column (concrete and granite) was accurately measured. The measured velocity can be con-sidered to the basis for physical properties estimation, for example humidity, voids ratio etc. The acquired quan-titative results are characterized by high quality and are more reliable compared to the results of single-fold GPR survey.
|
topic |
Non-destructive testing, electromagnetic methods, forward and inverse problem solving, mathematical modelling, ground penetrating radar, tomography |
url |
http://ijccse.iasv.ru/article/view/25 |
work_keys_str_mv |
AT marinassudakova searchingandmeasurementoffunctionalvoidsbymeansofgprtomographybytheexampleoftwocolumns AT eugeniyabterentieva searchingandmeasurementoffunctionalvoidsbymeansofgprtomographybytheexampleoftwocolumns AT alexeyyukalashnikov searchingandmeasurementoffunctionalvoidsbymeansofgprtomographybytheexampleoftwocolumns |
_version_ |
1725728959930302464 |