6533b831fe1ef96bd129982b
RESEARCH PRODUCT
Low-cost approximate reconstructing of heterogeneous microstructures
R. PiaseckiW. OlchawaD. FrączekR. Wiśniowskisubject
General Computer SciencePhase (waves)FOS: Physical sciencesGeneral Physics and Astronomyentropic descriptor02 engineering and technologycomputer.software_genre01 natural sciencesMeasure (mathematics)heterogeneous microstructuresVoxel0103 physical sciencesGeneral Materials Science010306 general physicsCondensed Matter - Statistical MechanicsMathematicsStatistical Mechanics (cond-mat.stat-mech)3D microstructure reconstructiontwo-exponent power-lawGeneral ChemistryRadiusFunction (mathematics)021001 nanoscience & nanotechnologyMicrostructureSample (graphics)Computational MathematicsMechanics of MaterialsSPHERES0210 nano-technologycomputerAlgorithmdescription
We propose an approximate reconstruction of random heterogeneous microstructures using the two-exponent power-law (TEPL). This rule originates from the entropic descriptor (ED) that is a multi-scale measure of spatial inhomogeneity for a given microstructure. A digitized target sample is a cube of linear size L in voxels. Then, a number of trial configurations can be generated by a model of overlapping spheres of a fixed radius, which are randomly distributed on a regular lattice. The TEPL describes the averaged maximum of the ED as a function of the phase concentration and the radius. Thus, it can be used to determine the radius. The suggested approach is tested on surrogate samples of ceramic and carbonate. In each of the cases, fifty low-cost trials provided a few good enough candidates to a selection of the optimal reconstruction. When a better accuracy is planned, the final reconstructions can serve as the starting configurations. Then, the resulting reconstructions should be competitive indeed to those starting with random configurations.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2016-01-01 |