Damage detection of reinforced concrete elements retrofitted with FRP by using a wireless measurement system

Efi A. Tzoura, Eleni G. Choutopoulou, Thanasis C. Triantafillou, Costas P. Providakis, Aristomenis V. Tsantilis, Corina G. Papanicolaou, Dimitris L. Karabalis

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

In this study lead zirconate titanate (PZT) transducers are employed for damage detection of six reinforced concrete elements (four beams and two columns) retrofitted with carbon fiber reinforced polymer (CFRP) jackets. The PZT transducers were placed externally on the CFRP jackets in an effort to detect the damage underneath the jackets. Measurements of the voltage across the PZT transducers were obtained at various strain values during the experimental procedure. The transducers were placed in positions where the failure of the CFRP jackets was expected to be more intense. The variation of the voltage as the strain increases is the indication of damage. The damage index employed for the quantification of the damage is the root-mean-square-deviation (RMSD) index. The experimental results lead to the conclusion that the measurement system employed in combination with the PZT transducers provide safe evidence that damage detection can be achieved at an early stage.

Original languageEnglish (US)
Title of host publicationNDT in Progress 2015 - 8th International Workshop of NDT Experts, Proceedings
EditorsPavel Mazal
PublisherBrno University of Technology
Pages171-176
Number of pages6
ISBN (Electronic)9788021452626
StatePublished - Jan 1 2015
Event8th International Workshop NDT in Progress 2015 - Prague, Czech Republic
Duration: Oct 12 2015Oct 14 2015

Publication series

NameNDT in Progress 2015 - 8th International Workshop of NDT Experts, Proceedings

Other

Other8th International Workshop NDT in Progress 2015
CountryCzech Republic
CityPrague
Period10/12/1510/14/15

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Keywords

  • Damage detection
  • FRP jackets
  • PZT transducers
  • Reinforced concrete
  • Wireless system

ASJC Scopus subject areas

  • Geophysics

Cite this

Tzoura, E. A., Choutopoulou, E. G., Triantafillou, T. C., Providakis, C. P., Tsantilis, A. V., Papanicolaou, C. G., & Karabalis, D. L. (2015). Damage detection of reinforced concrete elements retrofitted with FRP by using a wireless measurement system. In P. Mazal (Ed.), NDT in Progress 2015 - 8th International Workshop of NDT Experts, Proceedings (pp. 171-176). (NDT in Progress 2015 - 8th International Workshop of NDT Experts, Proceedings). Brno University of Technology.