Surface-Wave Based Model for Estimation of Discontinuity Depth in Concrete

Sensors
Eunjong AhnMyoungsu Shin

Abstract

In this paper, we propose an accurate and practical model for the estimation of surface-breaking discontinuity (i.e., crack) depth in concrete through quantitative characterization of surface-wave transmission across the discontinuity. The effects of three different mixture types (mortar, normal strength concrete, and high strength concrete) and four different simulated crack depths on surface-wave transmission were examined through experiments carried out on lab-scale concrete specimens. The crack depth estimation model is based on a surface-wave spectral energy approach that is capable of taking into account a wide range of wave frequencies. The accuracy of the proposed crack depth estimation model is validated by root mean square error analysis of data from repeated spectral energy transmission ratio measurements for each specimen.

References

Jan 5, 2002·Ultrasonics·P AnugondaJ A Turner
Feb 25, 2003·The Journal of the Acoustical Society of America·Won-Joon SongSurendra P Shah
Mar 6, 2004·The Journal of the Acoustical Society of America·S K RamamoorthyJ A Turner
Mar 25, 2010·The Journal of the Acoustical Society of America·Seong-Hoon Kee, Jinying Zhu
Feb 24, 2011·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Seong-Hoon Kee, Jinying Zhu
Jun 13, 2015·IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control·Hajin Choi, John S Popovics

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Methods Mentioned

BETA
optical microscopy

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MATLAB
LabVIEW

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