......................................................................................................................................................... 6 SUMMARY ......................................................................................................................................................... 7 Background .....................................................................

Multiscale computational methods bridging models at micro-scale with macro-properties is a problem of practical significance. Probability distribution functions (PDFs) providing a complete representation of microstructural variability in 3D polycrystalline materials using limited information is difficult to obtain since this inverse problem is highly ill-posed. We use the maximum entropy (MaxEn...

A numerical method for the calculation of the electrical conductivity of porous ceramics for gas sensing applications is developed, which takes into account detailed microstructural features by mapping a mesoscopic irregular resistor network onto the microstructure. The overall conductance of the ceramic sample is obtained by solving the Kirchhoff equations for the irregular network using an ef...

The presence of hydrogen within the microstructure of an alloy can lead to a serious reduction of ductility known as hydrogen embrittlement. Although the exact mechanisms of this phenomenon are still subject to debate [1], some mitigation strategies are available. Such strategies include minimizing hydrogen ingress with surface coatings, or controlling hydrogen diffusion within via the introduc...

The consolidation of fiber-reinforced titanium matrix composite (TMC) monotapes produced by spray deposition is an important step in the manufacture of TMC components. The performance of this class of composites is controlled by fiber-matrix properties and by the composite’s relative density, fiber microbending stress/fracture and by the interfacial reaction layer thickness at the fiber-matrix ...

2014 This paper aims towards a presentation of the general structure of the phenomenological models presently used for the macroscopic description of metal plasticity and a discussion of their interaction with microstructural investigation. Attention is concentrated on internal variables modelization which, from the very beginning, must include some ideas about the microstructural material stat...