A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Non-destructive evaluation of FRP-confined concrete using microwave
In this study, the Automatic Progressive Stepping - Converging Wave (APS-CW) data focusing scheme with the use of microwaves has been demonstrated as a possible method for use in NDE of FRP-confined concrete. To result in high-resolution images, an efficient wavenumber-frequency migration technique has been employed. Since the work is still at its exploratory stage, signals created from FD-TD analyses have been used instead of those from physical measurements, as the data inputs of our image reconstruction computation. By means of two numerical models, the APS-CW scheme has been shown to be advantageous in terms of damage detection effectiveness, measurement efficiency, and implementation practicality. It has also been shown that the data-focusing concept is a feasible technique, which requires further refinements to improve image resolution and conformation. To address these issues, we propose to implement, in our future studies, the subspace technique of Gunatilaka and Baertlein [2000] to improve image resolution near the interface and outer surface of the hybrid material system. It might also be necessary to refine the temporal characteristics of the incident waves in accordance to the target size and geometry of the defects.
Non-destructive evaluation of FRP-confined concrete using microwave
In this study, the Automatic Progressive Stepping - Converging Wave (APS-CW) data focusing scheme with the use of microwaves has been demonstrated as a possible method for use in NDE of FRP-confined concrete. To result in high-resolution images, an efficient wavenumber-frequency migration technique has been employed. Since the work is still at its exploratory stage, signals created from FD-TD analyses have been used instead of those from physical measurements, as the data inputs of our image reconstruction computation. By means of two numerical models, the APS-CW scheme has been shown to be advantageous in terms of damage detection effectiveness, measurement efficiency, and implementation practicality. It has also been shown that the data-focusing concept is a feasible technique, which requires further refinements to improve image resolution and conformation. To address these issues, we propose to implement, in our future studies, the subspace technique of Gunatilaka and Baertlein [2000] to improve image resolution near the interface and outer surface of the hybrid material system. It might also be necessary to refine the temporal characteristics of the incident waves in accordance to the target size and geometry of the defects.
Non-destructive evaluation of FRP-confined concrete using microwave
Zerstörungsfreie Bewertung von durch faserverstärkten Kunststoff begrenzten Beton
Buyukozturk, O. (author) / Park, J. (author) / Au, C. (author)
2003
7 Seiten, 3 Bilder, 10 Quellen
(Nicht paginiert)
Conference paper
Storage medium
English
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