A Bayesian model updating procedure for dynamic health monitoring

Edoardo Patelli, Matteo Broggi, Pierre Beaurepaire

Research output: Contribution to conferencePaper

2 Citations (Scopus)

Abstract

Structures under dynamic excitation can undergo phenomena of crack growth and fracture. For safety reasons, it is of key importance to be able to detect and classify these cracks before the unwarned structural failure. Additionally, the cracks will also change the dynamic behaviour of the structures, impacting their performance. Here, a Bayesian model updating procedure has been implemented for the crack detection location and length estimation on a numerical model of a spring suspension arm. A highfidelity finite element model has been used to simulate experimental data, by inserting cracks of different extent at different locations and obtaining reference frequency response functions. In the following, a low fidelity parametric model has been used in the Bayesian framework to infer the crack location and length by comparing the dynamic responses. It is shown that the proposed methodology can be successfully adopted as a structural health monitoring tool.

Original languageEnglish
Pages1321-1331
Number of pages11
Publication statusPublished - 14 Jun 2013
Event4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013 - Kos Island, Greece
Duration: 12 Jun 201314 Jun 2013

Conference

Conference4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013
CountryGreece
CityKos Island
Period12/06/1314/06/13

Keywords

  • Bayesian model updating
  • crack detection
  • dynamic excitation
  • fatigue
  • health monitoring
  • transitional Markov chain Monte Carlo

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  • Cite this

    Patelli, E., Broggi, M., & Beaurepaire, P. (2013). A Bayesian model updating procedure for dynamic health monitoring. 1321-1331. Paper presented at 4th International Conference on Computational Methods in Structural Dynamics and Earthquake Engineering, COMPDYN 2013, Kos Island, Greece.