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Modélisation des méthodes ultrasonores de surveillance de structures aéronautiques instrumentées en vue de leur optimisation.

Abstract : Structural health monitoring (SHM) using elastic guided waves is under study for the inspection of aircraft multilayered composite stiffened plates. Two simulation tools are developed to discuss its feasibility. The first predicts the wave propagation in the plates as a modal series by the semi-analytical finite element method (SAFE). The second tool is a hybrid computing predicting diffraction of guided waves in arbitrary incidence on a composite stiffener. The diffraction is calculated locally by finite element (FE), the global propagation by the SAFE method. The link between the two calculations is done through transparent boundaries of the FE domain avoiding artificial reflections, allowing the projection of the field in the stiffener on the modes of the plate and minimizing the FE computation domain. The tools are used in typical cases, the predictions are discussed in view of the industrial application of SHM.
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https://pastel.archives-ouvertes.fr/pastel-00653553
Contributor : Laura Taupin <>
Submitted on : Tuesday, December 20, 2011 - 4:46:37 PM
Last modification on : Friday, September 11, 2015 - 10:03:07 AM
Long-term archiving on: : Wednesday, March 21, 2012 - 2:22:07 AM

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  • HAL Id : pastel-00653553, version 1

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Laura Taupin. Modélisation des méthodes ultrasonores de surveillance de structures aéronautiques instrumentées en vue de leur optimisation.. Acoustique [physics.class-ph]. Ecole Polytechnique X, 2011. Français. ⟨pastel-00653553⟩

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