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The main aim of the present work is to estimate the effective elasticstiffnesses of a two-phase diamond/$\beta$-SiC composite thin film that isfabricated by chemical vapor deposition. The parameters of linear elasticityare determined by numerical homogenization. The database is sparse since forthe 3D volume of interest only two micrographs displaying the phasedistributions in perpendicular planes are available; micrographs each of across-section and the surface of the thin film. A representative volume element(RVE) is reconstructed by an optimization software and by means of identifiedmaterial symmetries in 2D of the specimen. The elastic homogenization resultsindicate that the two-phase diamond/$\beta$-SiC composite exhibits the behaviorof transverse isotropy, for which the set of six independent materialparameters is identified.

Estimating the Effective Elasticity Properties of a Diamond/$\beta$-SiC Composite Thin Film by 3D Reconstruction and Numerical Homogenization