On the Morphological and Crystallographic Anisotropy of Diesel Particulate Filter Materials

Fabien Léonard, Axel Lange, Andreas Kupsch, Bernd Randolf Müller, Giovanni Bruno

    Research output: Contribution to journalArticlepeer-review


    The determination of the anisotropy of materials’ microstructure and morphology (pore space) in diesel particulate filter (DPF) materials is an important problem to solve, since such anisotropy determines the mechanical, thermal, and filtration properties of such materials. Through the use of a dedicated (and simple) segmentation algorithm, it is shown how to exploit the information yielded by 3D X-ray computed tomography data to quantify the morphological anisotropy. It is also correlated that such anisotropy of the pore space Such anisotropy of the pore space is also correlated with the microstructure and crystallographic anisotropy of the material in several showcases: a microstructurally isotropic material, such as SiC, and some morphologically and microstructurally anisotropic cordierite materials. In the later case, the finer the grain size, the more isotropic the microstructure.

    Original languageEnglish
    Article number2101380
    JournalAdvanced Engineering Materials
    Issue number6
    Publication statusPublished - Jun 2022


    • X-ray computed tomography
    • X-ray refraction
    • cordierite
    • porosity
    • texture


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