How to evaluate plate crack after bending?

According to me most of the crack propagation behavior relating to the variable amplitude load and bending is conducted in flat specimens such as centered-crack specimens or compact test specimens with various thicknesses. For that reason, it is also important to understand the crack growth behavior relating to the overload on other geometry which differs from the previous investigation.  It is known that the size of diameter influences the crack growth behavior. The retardation or acceleration depends on the residual stress state in front of the crack tip. If the residual stress state developing was compressive, retardation will be observed, and if the tensile residual stress state developed, the acceleration of the crack will occur after overloading, and finally the shape of the component has to be taken into consideration for evaluating fatigue life in association with the crack growth.