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Detecting damages and stress changes in concrete structures using Coda wave interferometry
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Paper Abstract

Coda waves experiencing long propagation time and travel path are sensitive to weak changes in a medium. Coda wave interferometry (CWI) is an efficient method to analyze coda waveform variations. In this paper, the CWI technique is used to detect minute cracks and stress changes in a 6-meter reinforced concrete beam. Specifically, four-bending tests with varied loads are conducted on the beam, and a couple of sensors are installed sparsely to collect ultrasonic wave signals. Then for each source-receiver pair, the coda waveform variations between load steps are quantified using the CWI technique. The results show that the stress changes and minute cracks in the beam can be detected through the velocity changes and decorrelations of the coda waveforms. The presented study may provide a useful tool for concrete structural nondestructive evaluation and testing (NDT) applications.

Paper Details

Date Published: 1 April 2019
PDF: 6 pages
Proc. SPIE 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII, 109710D (1 April 2019); doi: 10.1117/12.2514369
Show Author Affiliations
Hanyu Zhan, New Mexico State Univ. (United States)
Hanwan Jiang, Univ. of Wisconsin-Platteville (United States)
Research Institute of Highway Ministry of Transport (China)
Ruinian Jiang, New Mexico State Univ. (United States)
Jinquan Zhang, Research Institute of Highway Ministry of Transport (China)


Published in SPIE Proceedings Vol. 10971:
Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII
Andrew L. Gyekenyesi, Editor(s)

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