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Sim, Sung-Han
Smart Infrastructure Systems Lab
Research Interests
  • Smart Sensor and Sensor Network, Structural Health Monitoring, Digital Image Processing

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

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Title
Surface-Wave Based Model for Estimation of Discontinuity Depth in Concrete
Author
Ahn, EunjongKim, HyunjunSim, Sung-HanShin, Sung WooPopovics, John S.Shin, Myoungsu
Keywords
surface-wave transmission; self-calibrating measurement; spectral energy transmission ratio; crack depth estimation model
Issue Date
201808
Publisher
MDPI AG
Citation
SENSORS, v.18, no.9, pp.2793 -
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.
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DOI
http://dx.doi.org/10.3390/s18092793
ISSN
1424-8220
Appears in Collections:
UEE_Journal Papers
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