Notice of RetractionDamage identification by flexibility change for beam structures

Notice of Retraction

After careful and considered review of the content of this paper by a duly constituted expert committee, this paper has been found to be in violation of IEEE´s Publication Principles.

We hereby retract the content of this paper. Reasonable effort should be made to remove all past references to this paper.

The presenting author of this paper has the option to appeal this decision by contacting TPII@ieee.org.

Using the flexibility change, a coupled method is proposed in this paper to detect damages in beam structures. The present algorithm makes use of an original finite element model and a subset of measured eigenvalues and eigenvectors. The proposed method identifies structural damages in two steps. Using the change of structural flexibility, a damage localization criterion is defined firstly to determine the damaged degree of freedom. Then the damaged elements can be ascertained according to the relation between the element and the degree of freedom. With the suspected damaged elements determined, the new flexibility perturbation method is employed to obtain damage extents in the second stage. A numerical example of a simply supported beam is used to demonstrate the efficiency of the method. The illustrative example show the good efficiency and stability of the proposed method on the identification of damages in beam structures.