Radar imaging of reinforced concrete specimens for nondestructive testing

Oral Buyukozturk; Hong C. Rhim

doi:10.1117/12.209763

19 May 1995 Radar imaging of reinforced concrete specimens for nondestructive testing

Oral Buyukozturk, Hong C. Rhim

Proceedings Volume 2456, Nondestructive Evaluation of Aging Bridges and Highways; (1995) https://doi.org/10.1117/12.209763
Event: Nondestructive Evaluation of Aging Infrastructure, 1995, Oakland, CA, United States

Abstract

Detection of steel bars embedded inside concrete for reinforcement has been one of the major goals of nondestructive testing methods for concrete. The use of radar in detecting steel bars is advantageous due to the sensitivity of electromagnetic waves to metallic objects and the versatility in using appropriate electromagnetic wave polarization waves to metallic objects and the versatility in using appropriate electromagnetic wave polarization with respect to the orientation of the bars. However, obtaining imagery of steel bars inside a lossy medium such as concrete requires sophisticated problem solving approaches including understanding of the electromagnetic properties of concrete, identification of proper radar measurement parameters as center frequency and bandwidth, and development of image reconstruction algorithms. This paper presents experimental results of radar measurements of laboratory size concrete specimens with or without steel bars. Sample radar imagery processed from raw measurement data is provided with discussion.

Citation Download Citation

Oral Buyukozturk and Hong C. Rhim "Radar imaging of reinforced concrete specimens for nondestructive testing", Proc. SPIE 2456, Nondestructive Evaluation of Aging Bridges and Highways, (19 May 1995); https://doi.org/10.1117/12.209763

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