Abstract
A calculation and experimental study is provided for development of curvilinear cracks of different original orientation with uniaxial and biaxial tension. A marked dependence is noted for crack growth trajectory on the form of stressed state and aluminum alloy properties. It is established that the criterion considered for crack growth direction cannot be recommended as universal for a whole number of test materials. A method suggested previously for plotting calculation and experimental crack growth trajectories with a complex stressed state may be used in determining cyclic resistance characteristics for mixed forms of failure.
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