STATIC AND FATIGUE ANALYSIS OF AN UPPER WING SKIN WITH EXFOLIATION CORROSION

摘要

This paper presents the modeling aspects of a collaborative research program on the effects of exfoliation corrosion and grindout repairs on the structural integrity of an upper wing skin. Finite element and fatigue models were developed to simulate exfoliation corrosion damages and grindout repairs located at fastener holes. Modeling and simulation of 19 test coupons of various exfoliation or grindout levels were carried out. Comparison with experimental data showed the usefulness of the proposed models to assess performance reduction.