Analysis of the adhesive damage for different shapes and types patch’s in Aircraft Structures corroded with an inclined crack

Abstract

In this study, the finite element method is used to analyze the effect of corrosion and the behavior of inclined cracks of an aluminum plate Al 2024 -T3 under thermomechanical loading. The effects of the inclination of the crack and the effect of temperature for and different types and shapes of adhesives are highlighted. The results obtained show the increase of the crack inclination leads to a decrease of the damaged area and the damaged area ratio of the adhesive. In addition, the ratio DR increases with increasing temperature variation ΔT. The best performing patch shape that gave interesting results during this analysis is the circular and for type the Boron/epoxy is the best.

Analysis of the effect of localized corrosion shape on a cracked and notched 2024 AL plate repaired with composite patch under thermo-mechanical loading

“…The principle of these repairs is to remove the damaged area (the corrosion layer) and cover it with a composite patch. In the literature, several references (Salem et al2019;Salem et al 2017;Benzineb et al 2022)referred to the repair of composite materials by patches, which were classified into two categories: external and internal patches.…”

Optimization of Structural Damage Repair with Single and Double-Sided Composite Patches through the Finite Element Analysis and Taguchi Method

“…In certain instances, a composite laminate’s mechanical characteristics are anticipated using an approach that combines FEA and machine learning [ 18 ]. The FE approach has been used to analyse the adhesive damage for various shapes and types of patches on corroded plates with an angled fracture [ 19 ]. Aluminium plates with cracks were subjected to an elastoplastic study with a hybrid repair method that used a bonded composite patch and drilling holes in the opening mode using the FE technique [ 20 ].…”