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Item type:Publication, Access status: with files , Optimized crenellation designs for fatigue life improvement of metallic airframe structures(2017); Fatigue of airframe structures is a critical concern for the safety of aircraft. Serious accidents due to the accumulation of fatigue damages in airframes are by no means rare cases in history. Nowadays to ensure the structural integrity of the aircraft periodic inspections are performed on the airframe structure to detect and repair fatigue cracks timely. The prescribed inspection frequency is determined by the speed of fatigue crack growth from an initial detectable length to a maximum allowable length. Therefore, there is a constant driving force in the aerospace industry to improve the fatigue crack resistance of airframe structures by different techniques to reduce the inspection frequency and thus the maintenance cost yet without any compromise on the safety issue. Crenellation is such a promising fatigue crack retardation concept developed in recent years, in which the thickness of the fuselage skin is systematically varied ...Publicationtype: Doctoral Thesis376 1352