Composite Patches as Reinforcements and Crack Arrestors in Aircraft Structures

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

“…The metal or composite patches are stuck on a single or on both faces of the cracked structural components [1][2][3][4][5][6]. The repair of the cracks by gluing composite material patches proved its efficiency in reducing the stress intensity at the crack heads.…”

Numerical analysis of the stress intensity factors for repaired cracks from a notch with bonded composite semicircular patch

“…Bonded composite repair is an efficient and economical method, in which composite patches are bonded to either one side or both sides of a cracked structural component to extend its service life [1][2][3][4][5][6]. This method has been used to repair a number of aging aircraft components.…”

Elliptical and circular bonded composite repair under mechanical and thermal loading in aircraft structures

“…This is because the patch carries the loads as the crack grows. Several investigators announced this tendency 6,11,20,22 . It can also noted, according to the results of Figure 3 that the semi-circular shape of patch presents lower values of the stress intensity factor at the crack tip.…”

“…Recently, the use of adhesives is accepted as a process of structures repairs to increase the service life of damaged components [1][2][3][4][5][6] . The metal or composite patches are stuck on a single or on both faces of the cracked structural components.…”