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1 April 2019 Stress change detection from application of a stretching model to coda wave measurements
Hanyu Zhan, Hanwan Jiang, Chenxu Zhuang, Ruinian Jiang, Jinquan Zhang
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Proceedings Volume 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII; 109711H (2019) https://doi.org/10.1117/12.2514357
Event: SPIE Smart Structures + Nondestructive Evaluation, 2019, Denver, Colorado, United States
Abstract
The heterogeneities contained in concrete will cause strongly multiple scattering behaviors during the propagation of ultrasonic waves, forming the so-called coda waves. External loads will slightly change concrete structural size and further introduce stretching effects on coda waveforms. In this paper, coda waves are collected from several concrete samples under different loads, and the waveform variations are quantified through a stretching technique. The results show that their stretching ratios are varied according to external load strengths, which implies that stress changes in concrete can be detected by coda wave measurements. The presented study could be very value for nondestructive testing of concrete structures.
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Hanyu Zhan, Hanwan Jiang, Chenxu Zhuang, Ruinian Jiang, and Jinquan Zhang "Stress change detection from application of a stretching model to coda wave measurements", Proc. SPIE 10971, Nondestructive Characterization and Monitoring of Advanced Materials, Aerospace, Civil Infrastructure, and Transportation XIII, 109711H (1 April 2019); https://doi.org/10.1117/12.2514357
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KEYWORDS
Ultrasonics
Nondestructive evaluation
Wave propagation
Multiple scattering
Civil engineering
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