Structural Corrosion Prediction of Aging Aircraft Based on Improved Unequal Time Interval Grey Model

Combined with the corrosion maintenance data of the B757 model provided by a domestic airline, the unequal-pitch gray model was improved from the initial value optimization, background value optimization and the introduction of weight matrix, and the corrosion prediction of the aircraft structural parts was carried out. The results show that compared with the traditional gray model, the comprehensive optimization of unequal-time gray model could further improve the accuracy of the prediction results, and could support the optimization of maintenance tasks for civil aircraft.