Print Email Facebook Twitter The influence of starter notches on flight simulation fatigue crack growth Title The influence of starter notches on flight simulation fatigue crack growth Author Wanhill, R.J.H. Schra, L. Institution National Aerospace Laboratory NLR Date 1995-03-15 Abstract An investigation was made of the effect of starter notch geometry on flight simulation fatigue crack growth in three damage tolerant aluminium sheet alloys, 2024-T3, 2091-T84 and 8090-T81. Changing the starter notch geometry resulted in significant differences in initial nonstabilized fatigue crack growth behaviour. However, there was only a slight effect on the rankings of the alloys for the in-service inspectable fatigue crack growth regime. Based on the results, a proposal for further investigation was made. This proposal should enable determining the influence of several important factors on flight simulation fatigue crack growth in damage tolerant aluminiuiTi sheet alloys. These factors are starter notch geometry, alloy yield strength, spectrum clipping level, and the specimen or sheet thickness. The proposal also provides an opportunity to try to bridge the gap that currently exists between short and long fatigue crack growth under flight simulation loading. Subject Aluminum alloys Cumulative damageCrack initiation Crack tipsFatigue life Flight simulationInspection Notch sensitivityHole geometry (mechanics)Crack opening displacementGust loadsSpecimen geometry To reference this document use: http://resolver.tudelft.nl/uuid:3f37c6a7-c36e-4d42-8be3-4bc26e4c38ce Publisher Nationaal Lucht- en Ruimtevaartlaboratorium Access restriction Campus only Source NLR Technical Publication TP 95127 U Part of collection Aerospace Engineering Reports Document type report Rights (c)1995 National Aerospace Laboratory NLR Files PDF 95127.pdf 11.18 MB Close viewer /islandora/object/uuid:3f37c6a7-c36e-4d42-8be3-4bc26e4c38ce/datastream/OBJ/view