Title :
Microwave dielectric properties inspection of fiber-reinforced civil structures
Author :
Roqueta, G. ; Monsalve, B. ; Blanch, S. ; Romeu, J. ; Jofre, L.
Author_Institution :
AntennaLab, Univ. Politec. de Catalunya, Barcelona
Abstract :
A non-destructive technique based on microwave frequency dispersion (or equivalently time-delay) measurements has been proved to perform an analysis of the density and spatial fiber distribution of the fiber-reinforced civil structures. This technique has a sensibility and dynamic range compatible with the actual needs of the civil structure measurements. In the range from 500 MHz to 3 GHz a kind of mathematical rule can be extracted in order to relate the steel fiber density in the material with the equivalent permittivity.
Keywords :
condition monitoring; inspection; nondestructive testing; permittivity measurement; civil structure measurements; equivalent permittivity; fiber-reinforced civil structures; frequency 500 MHz to 3 GHz; microwave dielectric properties inspection; microwave frequency dispersion measurements; nondestructive technique; spatial fiber distribution; steel fiber density; Density measurement; Dielectric measurements; Dispersion; Dynamic range; Frequency measurement; Inspection; Microwave frequencies; Microwave measurements; Performance analysis; Performance evaluation;
Conference_Titel :
Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-2041-4
Electronic_ISBN :
978-1-4244-2042-1
DOI :
10.1109/APS.2008.4619974
