Smart EMI monitoring of thin composite structures

Abstract : This paper presents a structural health monitoring (SHM) method for in-situ damage detection and localization in carbon fibre reinforced plates (CFRP). The detection is achieved using the electromechanical impedance (EMI) technique employing piezoelectric transducers as high-frequency modal sensors. Numerical simulations based on the finite element method are carried out so as to simulate more than a hundred damage scenarios. Damage metrics are then used to quantify and detect changes between the electromechanical impedance spectrum of a pristine and damaged structure. The localization process relies on artificial neural networks (ANN) whose inputs are derived from a principal component analysis of the damage metrics. It is shown that the resulting ANN can be used as a tool to predict the in-plane position of a single damage in a laminated composite plate.
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  • HAL Id : hal-01853013, version 1
  • OATAO : 4935

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Pierre Selva, Olivier Cherrier, Valérie Pommier-Budinger, Frederic Lachaud, Joseph Morlier. Smart EMI monitoring of thin composite structures. 16th International Conference on Composite Structures (ICCS16), Jun 2011, Porto, Portugal. ⟨hal-01853013⟩

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