Capacitance-based defect detection and defect location determination for cement-based material

@article{Wang2017CapacitancebasedDD,
  title={Capacitance-based defect detection and defect location determination for cement-based material},
  author={Yulin Wang and D. D. L. Chung},
  journal={Materials and Structures},
  year={2017},
  volume={50},
  pages={1-13}
}
This paper provides the first report of capacitance-based nondestructive cement-based material defect detection. It is based on the use of the fringing electric field (2 kHz) of a capacitor that comprises the cement-based material (cement paste slab, 250 × 250 × 9.31 mm3) and two relatively small copper electrodes separated from the slab by an electrically insulating polymer film. Due to the fringing field through the slab, the apparent permittivity is high, thus enabling the measured… 

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