<> "The repository administrator has not yet configured an RDF license."^^ . <> . . . "Interface mechanical problems in heterogeneous materials"^^ . "The simplified assumption of material homogeneity underlying many problems of structural\r\nmechanics is very often far from the complex reality we have to cope with. Junctions and\r\ninterfaces between di®erent materials must typically sustain mechanical and thermo-elastic\r\nstresses without failure. Consequently, they exert an important and sometimes controlling\r\ninfluence on the overall performance of the material. Therefore, current attempts in materials\r\nengineering to increase the strength and ductility of materials require a full appreciation of\r\nmaterial interfaces, their properties and characterization.\r\nSince interface problems are one of the main concern in civil, mechanical and electronic\r\nengineering, as well as in biomechanics and in materials science, this research field is characterized\r\nby multidisciplinary aspects. New concepts in engineering the material microstructure\r\nmark the beginning of a paradigm shift in the way we think about materials and structures.\r\nDue to recent advances in material processing, material and structural design considerations\r\nare moving toward a full integration.\r\nWith this respect, it is evident that a proper modeling of the mechanical behavior of\r\ninterfaces at di®erent length scales is an outstanding point. The possibility of controlling the\r\nmechanical behavior of the material over all the scales by tailoring interfaces clearly emerges\r\nas one of the new challenges of the scientific community.\r\nThis thesis aims at giving a reasonably complete overview of the most relevant mathematical\r\nand numerical techniques that can be applied to solve interface mechanical problems\r\nin heterogeneous materials. With this objective in mind, the connections between the wide\r\nliterature of Linear Elastic and nonlinear Fracture Mechanics and Contact Mechanics are\r\ndeeply investigated and emphasized.\r\nNovel features of this work include: (1) theoretical and numerical characterization of\r\nstress-singularities arising at multi-material interfaces in 2D linear elastic problems; (2) numerical\r\nand experimental study of brittle and fatigue crack growth in multi-layered materials;\r\n(3) definition of a unified interface constitutive law for the study of decohesion and contact\r\nproblems at bi-material interfaces; and (4) interpretation of size-scale e®ects in new advanced\r\ncomposite materials, such as the prediction of the critical grain sizes for the activation of\r\nthe superplastic behavior in fine grained composites and for the inversion of the Hall-Petch\r\nrelationship at the nano-scale."^^ . "2005" . . . "Politecnico di Torino"^^ . . . "Structural Engineering, Politecnico di Torino"^^ . . . . . . . . . "Marco"^^ . "Paggi"^^ . "Marco Paggi"^^ . . . . . "HTML Summary of #1935 \n\nInterface mechanical problems in heterogeneous materials\n\n" . "text/html" . . . "TJ Mechanical engineering and machinery"@en . .