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Application of FE Model Updating for Damage Assessment of FRP Composite Beam Structure

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Topics in Modal Analysis II, Volume 6

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Abstract

The FRP composite beam structure that is intended to represent deck prototype used in civil engineering construction is investigated. FRP composite material may have possible damage, which affect vibration structural integrity and reliability. To overcome this problem, vibration data from experiments can be used to assess such damage accurately. The FE mode updating process is demonstrated in parameter identification as well as structural damage identification. It is used to minimise the difference between experimental and numerical data. The updated parameters are the modified parameters selected in the FE model with aim of correcting modelling errors and/or damage detection. In this FE model updating procedure, model physical characteristics are changed so that the differences between experimental and numerical dynamic properties are reduced. The FE model updating is carried out using optimisation tools in ANSYS software. Only the first three natural frequencies will be considered in this work. The FE model updating procedure brings the numerical results of the FRP structure in proper correlation to the experimental results, according to an objective function, by changing the FE model parameters. The test results of the structure under intact and damage states are presented. It is suggested that there is damage at the unbounded joint when there is significant change in fixed parameters of the structure beyond acceptable degree.

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Abbreviations

\( (\sigma ) \) :

Standard deviation

\( (C{V_{\omega }}) \) :

Coefficient of variation

\( {S_j} \) :

Sensitivity coefficient

\( n \) :

Number of modal data

\( l \) :

Number of parameters updated

\( \Delta {\theta_1} \) :

Variable used in the FE model as input

\( {Z_{{j1}}} \) :

Output of the basic model

\( {Z_{{j2}}} \) :

Output when changed in the basic model

\( \left\{ {\Delta \theta } \right\} \) :

Vector representing the difference between experiment and numerical data

\( \left\{ {\Delta Z} \right\} \) :

Vector representing the different between the updated and initial parameters

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Acknowledgement

The authors gratefully acknowledge the financial support from Department of Mechanical, Medical and Aerospace Engineering, University of Surrey, UK.

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Authors and Affiliations

  1. Department of Mechanical, Medical & Aerospace Engineering, University of Surrey, Guildford, Surrey, GU2 5XH, UK

    O. A. Adediran, W. Xu & A. D. Crocombe

  2. Department of Mechanical Construction and Production, Ghent University, Ghent, Belgium

    M. M. Abdel Wahab

Authors
  1. O. A. Adediran
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  2. M. M. Abdel Wahab
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  3. W. Xu
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  4. A. D. Crocombe
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Corresponding author

Correspondence to O. A. Adediran .

Editor information

Editors and Affiliations

  1. University of Cincinnati, Cincinnati, Ohio, USA

    R. Allemang

  2. Michigan Technological University, Houghton, USA

    J. De Clerck

  3. University Massachusetts Lowell, Lowell, USA

    C. Niezrecki

  4. Michigan Technological University, Houghton, USA

    J.R. Blough

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© 2012 The Society for Experimental Mechanics, Inc.

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Adediran, O.A., Wahab, M.M.A., Xu, W., Crocombe, A.D. (2012). Application of FE Model Updating for Damage Assessment of FRP Composite Beam Structure. In: Allemang, R., De Clerck, J., Niezrecki, C., Blough, J. (eds) Topics in Modal Analysis II, Volume 6. Conference Proceedings of the Society for Experimental Mechanics Series. Springer, New York, NY. https://doi.org/10.1007/978-1-4614-2419-2_39

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  • DOI: https://doi.org/10.1007/978-1-4614-2419-2_39

  • Publisher Name: Springer, New York, NY

  • Print ISBN: 978-1-4614-2418-5

  • Online ISBN: 978-1-4614-2419-2

  • eBook Packages: EngineeringEngineering (R0)

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