Doung and Wang provided a process which iteratively searches for the first design that meets the criteria, since the results will be different depending on the rout that the
searching process has taken and it does not necessarily secure the optimal design [2]. While in the first step of the method criteria for cracked skin, patch and adhesive are defined, in the second step patches and adhesives materials are selected,and finally, an iterative process which meets the criteria is performed to find a design. Designed repaired will be subjected to mechanical or thermo mechanical loads to determine patch dimensions/size.