Effect of stacking sequence of the bonded composite patch on repair performance

  • Beloufa, Hadja Imane (Laboratoire de Modelisation Numerique et Experimentale des Phenomenes Mecaniques, Faculty of Sciences and Technology, University Abdelhamid Ibn Badis of Mostaganem) ;
  • Ouinas, Djamel (Laboratoire de Modelisation Numerique et Experimentale des Phenomenes Mecaniques, Faculty of Sciences and Technology, University Abdelhamid Ibn Badis of Mostaganem) ;
  • Tarfaoui, Mostapha (Laboratoire Brestois de Mecanique et des Systemes, ENSTA Bretagne) ;
  • Benderdouche, Noureddine (SEA2M, Faculty of Sciences and Technology, University Abdelhamid Ibn Badis of Mostaganem)
  • Received : 2015.10.05
  • Accepted : 2015.12.24
  • Published : 2016.01.25


In this study, the three-dimensional finite element method is used to determine the stress intensity factor in Mode I and Mixed mode of a centered crack in an aluminum specimen repaired by a composite patch using contour integral. Various mesh densities were used to achieve convergence of the results. The effect of adhesive joint thickness, patch thickness, patch-specimen interface and layer sequence on the SIF was highlighted. The results obtained show that the patch-specimen contact surface is the best indicator of the deceleration of crack propagation, and hence of SIF reduction. Thus, the reduction in rigidity of the patch especially at adhesive layer-patch interface, allows the lowering of shear and normal stresses in the adhesive joint. The choice of the orientation of the adhesive layer-patch contact is important in the evolution of the shear and peel stresses. The patch will be more beneficial and effective while using the cross-layer on the contact surface.


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