Structural Monitoring and Maintenance

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Iterative damage index method for structural health monitoring

  • You, Taesun (Texas A&M Transportation Institute, College Station) ;
  • Gardoni, Paolo (Department of Civil and Environmental Engineering, University of Illinois at Urbana-Champaign) ;
  • Hurlebaus, Stefan (Zachry Department of Civil Engineering, Texas A&M University, College Station)
  • Received : 2014.03.03
  • Accepted : 2014.03.24
  • Published : 2014.03.25
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Abstract

Structural Health Monitoring (SHM) is an effective alternative to conventional inspections which are time-consuming and subjective. SHM can detect damage early and reduce maintenance cost and thereby help reduce the likelihood of catastrophic structural events to infrastructure such as bridges. After reviewing the Damage Index Method (DIM), an Iterative Damage Index Method (IDIM) is proposed to improve the accuracy of damage detection. These two damage detection techniques are compared based on damage on two structures, a simply supported beam and a pedestrian bridge. Compared to the traditional damage detection algorithm, the proposed IDIM is shown to be less arbitrary and more accurate.

Keywords

Acknowledgement

Supported by : Association of American Railroads (AAR)

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