Abstract
Interaction of multiple axial pre-cracks in a pressurized fuselage was investigated using a small-scale model of an idealized fuselage. The strain between multiple cracks under rapidly crack propagation was measured. The recorded crack velocities justified the use of a successive finite element analysis with large shell deformation. The experimental results of a rupturing model fuselage represented the variations in the mixed mode stress intensity factors K_I and K_<II> and the remote stress components σ_<0X> with crack extension. The crack kinking location, kinking angle and the off-axis crack trajectory are predicted by numerical analysis and the validity of the calculated results is discussed in comparison with the experimental data
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