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Analysis of the distribution of thermal residual stresses in bonded composite repair of metallic aircraft structures

type de publication      article dans une revue internationale avec comité de lecture
date de publication 2009
auteur(s) Aminallah L.; Achour T.; Bachir Bouiadrjra B.; Serier B.; Amrouche Abdelwaheb; Feaugas X.; Benseddiq Noureddine
journal (abréviation) Computational Materials Science (Comput Mater Sci)
volume (numéro) 46 (4)
  
pages 1023 – 1027
résumé In this study, the distribution of the thermal residual stresses due to the adhesive curing in bonded composite repair is analysed using the finite element method. The computation of these stresses comprises all components of the structures: cracked plate, composite patch and adhesive layer. In addition, the influence of these residual stresses on the repair performance is highlighted by analysing their effect on the stress intensity factor at the crack tip. The obtained results show that the normal thermal stresses in the plate and the patch are important and the shear stresses are less significant. The level of the adhesive thermal stresses is relatively high. The presence of the thermal stresses increases the stress intensity factor at the crack tip, what reduce the repair performance.
mots clés Bonded composite repair; Thermal stresses; Stress intensity factor; Adhesive; Finite element method
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