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

Abstract : 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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https://hal.archives-ouvertes.fr/hal-01282730
Contributor : Nathalie Leal <>
Submitted on : Friday, March 4, 2016 - 11:53:05 AM
Last modification on : Tuesday, April 13, 2021 - 8:59:30 AM

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Hadja Imane Beloufa, Djamel Ouinas, Mostapha Tarfaoui, Noureddine Benderdouche. Effect of stacking sequence of the bonded composite patch on repair performance. Structural Engineering and Mechanics, Techno-press Ltd, 2016, 57 (2), pp.295-313. ⟨10.12989/sem.2016.57.2.295⟩. ⟨hal-01282730⟩

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