Morphological modeling of three-phase microstructures of anode layers using SEM images

Abstract : A general method is proposed to model 3D microstructures representative of three-phase anode layers used in fuel cells. The models are based on SEM images of cells with varying morphologies. The materials are first characterized using three morphological measurements: (cross-)covariances, granulometry and linear erosion. They are measured on segmented SEM images, for each of the three phases. Second, a generic model for three-phase materials is proposed. The model is based on two independent underlying random sets which are otherwise arbitrary. The validity of this model is verified using the cross-covariance functions of the various phases. In a third step, several types of Boolean random sets and plurigaussian models are considered for the unknown underlying random sets. Overall, good agreement is found between the SEM images and three-phase models based on plurigaussian random sets, for all morphological measurements considered in the present work: covariances, granulometry and linear erosion. The spatial distribution and shapes of the phases produced by the plurigaussian model are visually very close to the real material. Furthermore, the proposed models require no numerical optimization and are straightforward to generate using the covariance functions measured on the SEM images.
Document type :
Journal articles
Liste complète des métadonnées

Cited literature [28 references]  Display  Hide  Download

https://hal-mines-paristech.archives-ouvertes.fr/hal-01258887
Contributor : François Willot <>
Submitted on : Tuesday, January 19, 2016 - 4:05:51 PM
Last modification on : Monday, November 12, 2018 - 10:59:36 AM
Document(s) archivé(s) le : Wednesday, April 20, 2016 - 12:41:51 PM

File

abdallahEtAl20151121.pdf
Files produced by the author(s)

Identifiers

Citation

Bassam Abdallah, François Willot, Dominique Jeulin. Morphological modeling of three-phase microstructures of anode layers using SEM images. Journal of Microscopy, Wiley, 2016, 263 (1), pp.51-63. ⟨10.1111/jmi.12374⟩. ⟨hal-01258887⟩

Share

Metrics

Record views

351

Files downloads

241