Structural integrity of hierarchical composites.
Frattura ed Integrità Strutturale, 19.
Interface mechanical problems are of paramount importance in engineering and materials science.
Traditionally, due to the complexity of modelling their mechanical behaviour, interfaces are often treated as
defects and their features are not explored. In this study, a different approach is illustrated, where the interfaces
play an active role in the design of innovative hierarchical composites and are fundamental for their structural
integrity. Numerical examples regarding cutting tools made of hierarchical cellular polycrystalline materials are
proposed, showing that tailoring of interface properties at the different scales is the way to achieve superior
mechanical responses that cannot be obtained using standard materials
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