Journal Article

PreJuSER-15978

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Reconstruction of sub-wavelength fractures and physical properties of masonry media using full-waveform inversion of proximal penetrating radar

Patriarca, C. ; Lambot, S.FZJ* ; Mahmoudzadeh, M. R. ; Minet, J. ; Slob, E.

2011
Elsevier Science Amsterdam [u.a.]

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Please use a persistent id in citations: doi:10.1016/j.jappgeo.2011.03.001

Abstract: High-frequency, ultra-wideband penetrating radar has the potential to be used as a non-invasive inspection technique for buildings, providing high-resolution images of structures and possible fractures affecting constructions. To test this possibility, numerical and laboratory experiments have been conducted using a proximal, stepped-frequency continuous-wave radar system operating in zero-offset mode, spanning the 3-8 GHz frequency range. The reconstruction of the material electrical properties is achieved by resorting to full-waveform inverse modeling. Numerical experiments showed that for typical electric permittivity and electrical conductivity values of concrete and plaster, it is possible to retrieve the physical properties of the material and to detect fractures less than 1 mm thick Laboratory experiments were conducted on non-reinforced concrete and plaster test slabs in different configurations. The results showed the good potential of this method: (1) to provide a thorough fracture response model in buildings or artworks and (2) to non-invasively characterize the samples in terms of their electromagnetic properties. (C) 2011 Elsevier B.V. All rights reserved.

Keyword(s): J ; Ground penetrating radar (auto) ; Electromagnetic inverse problem (auto) ; Electric properties of concrete (auto) ; Material characterization (auto) ; Non-destructive testing (auto)

Note: The research leading to these results has received funding from the European Community's Seventh Framework Programme [FP7/2007-2013] under grant agreement no. 213651. The research was further supported by the DIGISOIL project, financed by the EC under the 7th Framework Programme for Research and Technology Development, Area "Environment", Activity 6.3 "Environmental Technologies" and FNRS (Belgium). We also thank the editor and two unknown reviewers for their helpful comments.

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Contributing Institute(s):

1. Agrosphäre (IBG-3)

Research Program(s):

1. Terrestrische Umwelt (P24)
2. STONECORE - Stone conservation for the refurbishment of buildings (213651) (213651)

Appears in the scientific report 2011

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