2015/01/16 by Tristan Cambonie, Jonathan Barés, Jonathan Bares +5
Engineering · Mathematics · Physics and Astronomy · #Anisotropy #Composite material #Fracture (geology) #Geometry #Granular flow and fluidized beds #Isotropy #Materials science #Mathematics #Microstructure #Optics #Porosity #Rock Mechanics and Modeling #Scaling #Surface finish #Surface roughness #Theoretical and Computational Physics #cond-mat.mtrl-sci #cond-mat.soft
paper · pdf · doi:10.1103/physreve.91.012406
10 pages, 10 figures, Physical Review E in Jan 2015, Vol. 91 Issue 1
arxiv created 2015/01/16 · openalex publication_date 2015/01/16 · arxiv updated 2015/04/16 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
To unravel how the microstructure affects the fracture surface roughness in heterogeneous brittle solids like rocks or ceramics, we characterized the roughness statistics of postmortem fracture surfaces in homemade materials of adjustable microstructure length scale and porosity, obtained by sintering monodisperse polystyrene beads. Beyond the characteristic size of disorder, the roughness profiles are found to exhibit self-affine scaling features evolving with porosity. Starting from a null value and increasing the porosity, we quantitatively modify the self-affine scaling properties from anisotropic (at low porosity) to isotropic (for porosity >10%).