Notice of RetractionPredictive grouping maintenance strategy for complex structure systems using importance measure

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.

The aim of this study is to propose a predictive grouping maintenance strategy for complex structure systems with gradually deteriorating units. The unit´s conditions are inspected at regular time intervals. Preventive maintenance decision rule is mainly based on the group improvement importance measure defined as a ratio of the improvement ability on the system reliability of a group of several units divided by the total maintenance costs of the group. Economic dependencies as well as structure dependencies between units are also investigated. A numerical example of a complex structure of 11-unit system is finally introduced to illustrate the uses and the advantages of the proposed maintenance strategy.