Bulk Nanolayered Composites: Interfacial Influence on Microstructural Evolution at Large Plastic Strains

Evolution of internal variables in an expanding hollow cylinder at large plastic strains

An efficient method for calculating the evolution of internal variables in an expanding hollow cylinder of rigid/plastic material is proposed. The conventional constitutive equations for rigid plastic, hardening material are supplemented with quite an arbitrary set of evolution laws for internal variables assuming that the material is incompressible. No restriction is imposed on the hardening l...

Microleakage of Bulk-Fill Composites at Two Different Time Points

Objectives: Microleakage is the main concern in composite restorations. This study aimed to compare the microleakage of two bulk-fill and one conventional composite at two different time points. Methods: Class II cavities were prepared in 60 premolar teeth and divided into six groups of 20. Groups 1 and 4 were incrementally filled with Grandio composite. Groups 2 and 5 were filled with X-tra...

Bulk and interfacial thermal transport in microstructural porous materials with application to fuel cells

Elastic-plastic Deformation at Finite Strains

In some circumstances, elastic-plastic deformation occurs in which both components of strain are finite. Such situations fall outside the scope of classical plasticity theory which assumes either infinitesimal strains or plastic-rigid theory for large strains. The present theory modifies the kinematics to include finite elastic and plastic strain components. For situations requiring this genera...

Interfacial effects in composites

It is well known that the behavior of diverse multicomponent systems such as fibrous composites, particle—filled polymers, polymer blends, and pigmented coatings depends not only on the composition, morphology, and properties of the constituents, but also on the nature of the interfacial region. This paper reviews typical examples, with emphasis on interpretation of interactions between constit...