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Elastic-plastic analysis of the J integral for repaired cracks in plates
Salem, Mokadem,Bouiadjra, Belabbes Bachir,Mechab, Belaid,Kaddouri, Khacem Techno-Press 2015 Advances in materials research Vol.4 No.2
In this paper, three-dimensional finite element method is used to analyze the J integral for repaired cracks in plates with bonded composite patch and stiffeners. For elastic the effect of cracks, the thickness of the patch ($e_r$) and properties of the patch are presented for calculating the J integral. For elastic-plastic a several calculations have been realized to extract the plasticized elements around the crack tip of repaired and un-repaired crack. The obtained results show that the presence of the composite patch and stiffener reduces considerably the size of the plastic zone ahead of the crack. The effects of crack size and the inter-distance of repaired cracks were analysed.
Effect of the corrosion of plate with double cracks in bonded composite repair
Mohamed Berrahou,Mokadem Salem,B. Mecha,B. Bachir Bouiadjra 국제구조공학회 2017 Structural Engineering and Mechanics, An Int'l Jou Vol.64 No.3
This paper presents a three-dimensional finite element method analysis of repairing plate with bonded composite patch subjected to tensile load. The effect of the corrosion on the damage of the adhesive (FM73) in the length of two horizontal cracks on the both sides is presented. The obtained results show that the crack on the left side creates a very extensive area of the damaged zone and gives values of the stress intensity factor (SIF) higher than that on the right side. We can conclude that the left crack is more harmful (dangerous) than that on the right side.