Modelling of a cracked aluminium plate repaired with composite octagonal patch in mode I and mixed mode

Finite element analysis of cracks in aging aircraft structures with bonded composite-patch repairs

“…The number of plies to be considered for a composite patch depends on the amount of damage, and the ply orientation depends on the direction in which the damage is present, and may subsequently progress, as well as the loading directions [19].…”

“…However, a high shear modulus will cause the higher shear stress to develop in the adhesive or the substrate. This will inherently cause a failure of adhesion (delamination or breakage) because forces are pulling in opposing directions across the adhesive bond [15,19,25]. …”

Elasto-plastic stress distributions in adhesively bonded double lap joints

“…He obtained an analytical solution for the distribution of shear stress in the joints. Numerical simulations of the adhesively bonded composite patch repair technique that used in aircraft industry have received a good deal of attention and a variety of references can be found in the literature [18][19][20][21].…”

Fracture analysis of Kevlar-49/epoxy and e-glass/epoxy doublers for reinforcement of cracked aluminum plates

“…A two dimensional finite element code, utilizing plane stress elements to mimic the repaired plate, referred to as FRacture ANalysis Code for 2D Layered structure (FRANC2DL), is being used by many researchers [11][12][13]. However, 2D models cannot capture the out-of-plane deformation along the crack front which has considerable impact on the stress intensity factor across the plate thickness [14].…”