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Feasibility of nondestructive testing of concrete by microwave radiometry
Author(s) -
Dérobert Xavier,
Mamouni Ahmed,
Leroy Yves
Publication year - 1997
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/(sici)1098-2760(199701)14:1<17::aid-mop6>3.0.co;2-p
Subject(s) - microwave , nondestructive testing , radiometry , permittivity , materials science , structural engineering , engineering , geology , remote sensing , physics , dielectric , telecommunications , optoelectronics , quantum mechanics
This study covers the numerical modeling of microwave radiometric signals applied to prestressed concrete in bridge structures. After an overview of the microwave technique, this work looks into the influence of concrete water content on the radiometric signal obtained when the duct is heated locally. Theoretical and experimental investigations have shown that the permittivity of the concrete must be known in order to calculate the coupling parameters between the microwave and the medium in order to obtain correct modeling. © 1997 John Wiley & Sons, Inc.