Issue 53

A. Moulgada et alii, Frattura ed Integrità Strutturale, 53 (2020) 187-201; DOI: 10.3221/IGF-ESIS.53.16

Comparative study of the repair of cracked plates with two different composite patches

Moulgada Abdelmadjid LTRI, Department of mechanical Engineering, University of Ibn Khaldoune Tiaret, City Zaaroura BP 78 14000 Tiaret, Algeria amoulgada@hotmail.fr Zagane Mohammed El Sallah University of Ibn Khaldoune Tiaret, City Zaaroura BP 78 14000 Tiaret, Algeria LMPM, Department of Mechanical Engineering, University of Djillali Liabes Sidi Bel Abbes, Algeria salah_cao@yahoo.fr Sahli Abderahmane, Ait kaci Djafar, Zahi Rachid LMPM, Department of Mechanical Engineering, University of Djillali Liabes Sidi Bel Abbes, Algeria sahliabderahmen@yahoo.fr, Aitkaci07@yahoo.fr, zahirachid72@yahoo.fr

A BSTRACT . The aim of this study is to analyze the behavior of a crack with and without reinforcement by a composite patch of an aluminum plate in mode I using the finite element method. The repair patch is boron / epoxy and Carbon / epoxy, which are used with great success by many researchers For the distribution of the stresses according to the various loadings, we can conclude that the effect of repair by patch in composite is very distinct, considering the intensities of stresses which decrease for each repair corresponding to the plate not repaired, therefore, the patch in composite dampens the stress field induced at the crack tip and causes a reduction in stresses. The repair with the Bore / epoxy composite patch is more effective than the Carbon/Epoxy patch, this is due to the mechanical properties and the various characteristics specific to boron/Epoxy which gives very significant and very effective results for the repair. K EYWORDS . Crack; Finite element method; Stresses; Composite; Adhesive.

Citation: Moulgada, A ,Zagane, M.E., Sahli.,A, Ait kaci, D, Zahi, R.. Comparative study of the repair of cracked plates with two different composite patches, Frattura ed Integrità Strutturale, 53 (2020) 187-201.

Received: 20.03.2020 Accepted: 19.04.2020 Published: 01.07.2020

Copyright: © 2020 This is an open access article under the terms of the CC-BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

I NTRODUCTION he lifetime of cracked structures risks having crucial damage or fatigue of the material, either by the propagation of cracks or by the singularity in the vicinity of the crack head; to avoid these risks of rupture or fatigue of the materials, bonding by composite patch remains a clear and adequate solution to be able to prolong the life of these structures, this repair by patch, has proven these experimental results and allows an effective gain and concrete, but this repair depends T

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