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Structural Engineering and Mechanics
  Volume 58, Number 5, June10 2016, pages 745-755

A new formulation of the J integral of bonded composite repair in aircraft structures
Nassim Serier, Belaïd Mechab, Rachid Mhamdia and Boualem Serier

    A three-dimensional finite element method is used for analysis of repairing cracks in plates with bonded composite patch in elastic and elastic plastic analysis. This study was performed in order to establish an analytical model of the J-integral for repair crack. This formulation of the J-integral to establish models of fatigue crack growth in repairing aircraft structures. The model was developed by interpolation of numerical results. The obtained results were compared with those calculated with the finite element method. It was found that our model gives a good agreement of the J-integral. The arrow shape reduces the J integral at the crack tip, which improves the repair efficiency.
Key Words
    composite; Finite Element Method; modelling; fracture mechanic; elastic-plastic
Nassim Serier, Belaïd Mechab, Rachid Mhamdia and Boualem Serier: LMPM, Department of Mechanical Engineering, University of SidiBel Abbes, BP 89 City Ben M\'hidi 22000, SidiBel Abbes, Algeria

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