Fatigue microcracks, caused by mechanical or thermal impacts, are formed during periodic stretching and compression of the upper layers of nanostructured materials. Then, the microcracks grow further and merge, leading to the cleavage of the material fragment and its subsequent destruction. In this work, we have performed calculations and transfer showing that it is necessary to structure nanomaterials in such a way as to form residual compressive stresses, which can serve as a barrier to crack propagation, in them. Here we also show that shear stresses are largely responsible for initiating the microcrack formation in nanostructured materials.
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