Wideband Microwave Imaging of Concrete for Nondestructive Testing
This article has been corrected.
VIEW CORRECTIONPublication: Journal of Structural Engineering
Volume 126, Issue 12
Abstract
Radar has the potential of becoming a powerful and effective tool for the nondestructive testing of concrete structures. An advancement of the method can be achieved through the understanding of the interaction between electromagnetic waves and concrete, and the identification of optimum radar measurement parameters for probing concrete. For the determination of optimum parameters, systematic radar measurements are needed in tandem with the implementation of proper signal processing techniques for imaging. This paper presents the results of such radar measurements, which are made using a wideband imaging radar with different frequency ranges. Inverse synthetic aperture radar is used for the measurements of laboratory-size concrete specimens having three different types of internal configurations. The signal processing algorithms implemented to obtain two-dimensional and three-dimensional imagery of concrete targets from radar measurements are also discussed. For the concrete specimens and measurement setup used in this study, 2–3.4 GHz waveforms are found to be adequate for the concrete thickness measurement, 3.4–5.8 GHz waveforms are adequate for the detection of delamination, and 8–12 GHz waveforms are adequate for the detection of inclusions embedded inside concrete.
Get full access to this article
View all available purchase options and get full access to this article.
References
1.
Büyüköztürk, O., and Rhim, H. C. ( 1995). “Modeling of electromagnetic wave scattering by concrete specimens.” Int. J. Cement and Concrete Res., 25(5), 1011–1022.
2.
Chong, K. P., Scalzi, J. B., and Dillon, O. W. ( 1990). “Overview of nondestructive evaluation projects and initiative at NSF.” J. Intelligent Mat., Sys., and Struct., 1(1), 422–431.
3.
Eaves, J. L., and Reedy, E. K. ( 1987). Principles of modern radar, Van Nostrand Reinhold, New York.
4.
Kong, J. A. ( 1990). Electromagnetic wave theory, 2nd Ed., Wiley, New York.
5.
Menon, M. M., Boudreau, E. R., and Kolodzy, P. J. ( 1993). “An automated ship classification system for ISAR imagery.” The Lincoln Lab. J., 6(2), 289–308.
6.
Mensa, D. L. ( 1981). High resolution radar imaging, Artech House, Dedham, Mass.
7.
Novak, L. M., Owirka, G. J., and Netishen, C. M. ( 1993). “Performance of a high resolution polarimetric SAR automatic target recognition system.” The Lincoln Lab. J., 6(1), 1–24.
8.
Rhim, H. C. ( 1995a). “Nondestructive evaluation of concrete using wideband microwave technique.” PhD thesis, Department of Civil and Environmental Engineering, Massachusetts Institute of Technology, Cambridge, Mass.
9.
Rhim, H. C. ( 1995b). “Radar imaging of a cylindrical concrete specimen for nondestructive testing.” Experimental Techniques, 19(1), 21–22.
10.
Rhim, H. C., and Büyüköztürk, O. ( 1998). “Electromagnetic properties of concrete at microwave frequency range.” ACI Mat. J., 95(3), 262–271.
11.
Rhim, H. C., Büyüköztürk, O., and Blejer, D. J. ( 1995). “Remove radar imaging of concrete slabs with and without a rebar.” Mat. Evaluation, 52(2), 295–299.
12.
Skolnik, M. I. ( 1979). Radar handbook, McGraw-Hill, New York.
Information & Authors
Information
Published In
Journal of Structural Engineering
Volume 126 • Issue 12 • December 2000
Pages: 1451 - 1457
History
Received: Jul 30, 1999
Published online: Dec 1, 2000
Published in print: Dec 2000
Authors
Metrics & Citations
Metrics
Citations
Download citation
If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download.