Strength, Fatigue and Crack Growth Resistance of Al-Alloys that are applied in Current Transport Airplanes Wing and Fuselage Skin

摘要

The results are presented of TsAGI's experimental investigations of strength, fatigue and crack growth resistance of the state-of-the-art enhanced Al-alloys developed at VIAM (Russia) and ALCOA (USA). The experimental data were obtained in the course of testing the standard specimens with use of electro-hydraulic machines of MTS firm (USA), Instron (Great Britain) and Schenk (FRG). The characteristics of fatigue cracks growth rate and the R-curves were estimated based on ASTM standards (USA). The tested specimens were cut out of semi-products manufactured by series technologies.