Structural Monitoring and Maintenance

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Impedance-based damage monitoring of steel column connection: numerical simulation

  • Ho, Duc-Duy (Faculty of Civil Engineering, Ho Chi Minh City University of Technology) ;
  • Ngo, Thanh-Mong (Faculty of Civil Engineering, Ho Chi Minh City University of Technology) ;
  • Kim, Jeong-Tae (Department of Ocean Engineering, Pukyong National University)
  • Received : 2014.05.20
  • Accepted : 2014.09.04
  • Published : 2014.09.25
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Abstract

This study has been motivated to evaluate the practicality of numerical simulation of impedance monitoring for damage detection in steel column connection. In order to achieve the objective, the following approaches are implemented. Firstly, the theory of electro-mechanical (E/M) impedance responses and impedance-based damage monitoring method are outlined. Secondly, the feasibility of numerical simulation of impedance monitoring is verified for several pre-published experimental examples on steel beams, cracked aluminum beams, and aluminum round plates. Undamaged and damaged steel and aluminum beams are simulated to compare to experimental impedance responses. An aluminum round plate with PZT patch in center is simulated to investigate sensitive range of impedance responses. Finally, numerical simulation of the impedance-based damage monitoring is performed for a steel column connection in which connection bolts are damaged. From the numerical simulation test, the applicability of the impedance-based monitoring to the target steel column connection can be evaluated.

Keywords

Acknowledgement

Supported by : Ho Chi Minh City University

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