Design and Testing of Impacted Stiffened CFRP Panels under Compression with the VERTEX Test Rig - Archive ouverte HAL Accéder directement au contenu
Article Dans Une Revue Aerospace Année : 2023

Design and Testing of Impacted Stiffened CFRP Panels under Compression with the VERTEX Test Rig

Florent Grotto
  • Fonction : Auteur
  • PersonId : 1250026
Bruno Castanié
Joël Serra

Résumé

Aeronautical composite primary structures must evidence sufficient residual strength in the presence of damage for compliance with damage tolerance requirements. The study of stiffener debonding on panels subjected to compression after impact is performed in that scope. Compression leads to the buckling of the skin between the stiffeners, and thus a complex loading of the bonding between the skin and the stiffener. This paper describes the development of a stiffened specimen for the VERTEX multiaxial test rig as a first step towards the study of the damage tolerance evaluation of stiffened structures, under combined loadings and at the intermediate scale of the test pyramid. By using virtual testing, the specimen was designed to produce the phenomenology of interest as the first damage, i.e., the debonding of the stiffener from the centre. Three samples were manufactured and subjected to low velocity impacts at various locations and energies. Then the three samples were subjected to compression after impact, up to the stiffener debonding, under a post-buckling regime of the skin. Test loading evolution is described with force fluxes and global strains, obtained from in situ stereo-correlation. The different impacts were found to give different types of damage but similar residual strength to compression after impact.
Fichier principal
Vignette du fichier
aerospace-10-00327-v2.pdf (15.94 Mo) Télécharger le fichier
Origine : Fichiers éditeurs autorisés sur une archive ouverte

Dates et versions

hal-04080629 , version 1 (25-04-2023)

Identifiants

Citer

Florent Grotto, Christophe Bouvet, Bruno Castanié, Joël Serra. Design and Testing of Impacted Stiffened CFRP Panels under Compression with the VERTEX Test Rig. Aerospace, 2023, 10 (4), pp.327. ⟨10.3390/aerospace10040327⟩. ⟨hal-04080629⟩
16 Consultations
7 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More