ISSN:
1434-6036
Keywords:
PACS. 62.20.Mk Fatigue, brittleness, fracture, and cracks - 68.35.Bs Surface structure and topography - 42.30.Yc Other topics in imaging and optical processing
Source:
Springer Online Journal Archives 1860-2000
Topics:
Physics
Notes:
Abstract: The geometrical properties of fractured sandstone surfaces were studied by measuring the length distribution of the shadows appearing under grazing illumination. Three distinct domains of variation were found: at short length scales a cut-off of self-affinity is observed due to the inter-granular rupture of sandstones, at long length scales, the number of shadows falls off very rapidly because of the non-zero illumination angle and of the finite roughness amplitude. Finally, in the intermediate domain, the shadow length distribution displays a power law decrease with an exponent related to the roughness exponent measured by mechanical profilometry. Moreover, this method is found to be more sensitive to deviations from self-affinity than usual methods.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/s100510050602
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