The express methodology for assessing the strength of a body with a partially healed crack is used for modeling the renovation of damaged structures. We adopted the hypothesis that the elastic properties of the body with a partially healed crack are preserved. However, the specific surface energy of separation of surfaces is different from that in a solid body. Thus, we came to the problem of mechanics of crack in a homogeneous in terms of elastic properties and heterogeneous in terms of crack resistance. The consequence of healing of damage plate with cyclic-symmetrical systems of radial through crack is studied for cases of uniform all-round tensile and bending load. The crack closure effect in plate under bending is considered using the model of contact along a line. In numerical form, quantitative esti-mates of healing efficiency are established depending on three parameters: degree of filling of cracks, crack resistance of the newly formed interface, number of defects. In particular, the results of healing of internal and external defects vertices are compared.