Fracture mechanics of aircraft structures with riveted and adhesive stiffeners

Resumo

A structural component is tolerant of damage if it can safely sustain critical length fractures until it is
repaired or its economic life has expired. Reinforcers or stiffeners have the main function of improving the
resistance and stability of these structures and providing a means of decelerating or stopping the propagation of
fractures in nuclear containments, reactors, viaducts, tall buildings, aircraft, ship hulls, bridges and offshore
structures. Analyzing the stress intensity factor and how the behavior of a sheet with and without stiffeners is
different are some of the issues studied in this work. The stress-intensity factor (SIF), a parameter that describes
the intensity of the singular stress field, has been used successfully to estimate fracture strength and fatigue crack
growth rates in situations where the assumptions of linear elasticity are valid.