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Design of accelerometer layout for structural monitoring and damage detection

  • Structural Engineering
  • Published:
KSCE Journal of Civil Engineering Aims and scope

Abstract

The paper presents an algorithm for designing a layout of accelerometers for structural monitoring and damage detection. The maximum likelihood approach has been applied as a mathematical basis for the algorithm. Fisher information matrix is formulated in terms of mode shape sensitivity with respect to structural parameters. A scheme of an effective independence distribution vector has been applied to determine optimal locations of accelerometers. Singular value decomposition scheme has been applied to overcome the rank deficiency problem in the computed sensitivity matrix. The adequacy of the proposed algorithm has been examined by estimating structural parameters through a frequency-domain system identification. The identification results using the response data measured at the locations selected by the proposed algorithm are compared with those at arbitrary locations. In addition to the design of accelerometer layout for a structural monitoring of general purpose, the paper proposes another algorithm of layout design for damage detection with the assumption that some members critical for the structural safety are pre-determined. Damage possibility of each member computed from the static strain energy has been implemented as a weighting factor in the algorithm. Simulation studies have been carried out on a two-span multigirder bridge to examine the proposed algorithms.

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Authors and Affiliations

  1. Department of Civil and Environmental Engineering, Inha University, Incheon, Korea

    Soon-Jung Kwon (Graduate Student) & Soobong Shin (Member, Assistant Professor)

  2. School of Civil, Urban and Geosystem Engineering, Seoul National University, Seoul, Korea

    Hae Sung Lee (Member, Associate Professor)

  3. Structural Engineering Department, KICT, Goyang-si, Kyonggi-do, Korea

    Young-Hwan Park (Member, Research Fellow)

Authors
  1. Soon-Jung Kwon
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  2. Soobong Shin
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  3. Hae Sung Lee
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  4. Young-Hwan Park
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Correspondence to Soon-Jung Kwon.

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Kwon, SJ., Shin, S., Lee, H.S. et al. Design of accelerometer layout for structural monitoring and damage detection. KSCE J Civ Eng 7, 717–724 (2003). https://doi.org/10.1007/BF02829140

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  • DOI: https://doi.org/10.1007/BF02829140

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