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Communication Dans Un Congrès Année : 2021

From small coupons to mid-scale impacted specimens, how to predict laminate failure?

Joël Serra
Christophe Bouvet
Samuel Rivallant
Bruno Castanié
Léon Ratsifandrihana
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Résumé

The development and certification of aeronautical composite structures is still largely based on the pyramid of tests. This approach requires a large number of tests going from the coupon to the full-size aircraft. To reduce the associated costs, predictive modelling methodologies are developed in several research centers [1]-[4]. Out of plane stresses emanating from impacts are well known to be critical for the residual compressive strength of laminated composites. To design composites structures, engineers use a damage tolerance approach following standards of low velocity impact and compression after impact tests [1], [2]. These standardized tests do not represent real structural loadings because of their conservative uniaxial boundary conditions that do not allow post-buckling failures. In this work, medium-scaled specimens are impacted at medium velocities with a gas launcher then multi-axially loaded in order to analyze interactions between impact damage and postbuckling.
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Dates et versions

hal-03909317 , version 1 (21-12-2022)

Identifiants

  • HAL Id : hal-03909317 , version 1

Citer

Joël Serra, Antoine Trellu, Guillaume Pichon, Christophe Bouvet, Samuel Rivallant, et al.. From small coupons to mid-scale impacted specimens, how to predict laminate failure?. 10th International Conference on Composites Testing and Model Identification, May 2021, Lille, France. ⟨hal-03909317⟩
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