are kept constant with respect to linear dimension of relevant RVEs.
This supports the proposal as to the relatively small size of the RVE for Gf given in the Final Report of RILEM TC QFS (2004).
Keeton's conclusion on increasing heterogeneity at larger grain sizes is incorrect, since strains were sampled by constant coating thickness, although the size of the RVE increased with grain size.
In other words, sampling sub-volumes of the RVE (defined at an acceptable level of scatter) will lead to improved strength values accompanied by disproportionately increased scatter (or, heterogeneity).
Upon combination of Eqs 8 and 11, the ratio of linear dimension of sample and the RVE (proportional to 3[square root of] i/[i.
This implies that sample size has to be adjusted to changes in the size of RVE or RAE due to material modifications (e.
Homogenization based on finite element analysis of the RVE
Calculating the equivalent material properties requires solving six RVE boundary value problems (BVP) in three dimensional case [2, 10].
The presented methodology is applied to the estimation of effective properties of the material which is represented by the RVE presented in Fig.
During this study, unidirectional composite effective properties were determined by using the finite element based homogenization in the same way as for establishing the properties of RVE presented in Fig.
Inclusions are divided into different families characterized by different orientation vector similarly as during the preparation of the RVE geometry.
The investigation of the composite behavior after plasticizing of matrix material is conducted by enforcing uniaxial strain on the RVE presented in Fig.