A micromechanical study of residual stresses in functionally graded materials

Glass-alumina functionally graded materials: their preparation and compositional profile evaluation

“…These locally concentrated stresses, in turn, may trigger small cracks and voids, which sap the overall system resistance. 23 The choice of a proper glass composition may be beneficial to the FGM performances, by reducing the discrepancies between the thermo-mechanical properties of the constituent phases. The glass formulation which was used, belonging to the CaO-ZrO 2 -SiO 2 system, fully satisfies this requirement since the glass shows favourable mechanical properties ( Table 2) and, most of all, its coefficient of thermal expansion is quite similar to that of the substrate (Fig.…”

Optimisation of material composition of functionally graded materials based on multiscale thermoelastic analysis

“…Pindera et al [9] investigated the effects of microstructural architectures in graded thermal barrier coatings on thermal stress distributions using artificial material models with different levels of functionally graded microstructural refinement and different arrangements. Dao et al [10] developed a computational micromechanics model to study the influences of discrete microstructure on residual stress distributions at the grain size level in FGMs. Tsukamoto [11] analysed microstresses in FGMs on the basis of Eshelby's equivalent inclusion method and Mori-Tanaka's mean-field approximation; however, because this analysis evaluates volumetric average stresses in the matrix and dispersion phases, it cannot evaluate specific microstress distributions.…”

A multi-scale model for coupled heat conduction and deformations of viscoelastic functionally graded materials

“…Recently, Fang and Hu [6] formulated the effective thermal conductivity of functionally graded fibrous composite using the nonFourier heat conduction equation. Reiter et al [24] and Dao et al [4] performed thermo-elastic FE analysis of FGM models. The FGM consists of an idealized geometry of inclusions graded linearly was considered.…”