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Roughness of sandstone fracture surfaces: Profilometry and shadow length investigations

Boffa, Jean-Marc and Allain, C. and Chertcoff, R. and Hulin, Jean-Pierre and Plouraboué, Franck and Roux, Stéphane Roughness of sandstone fracture surfaces: Profilometry and shadow length investigations. (1999) The European Physical Journal B, vol. 7 (n° 2). pp. 179-182. ISSN 1434-6028

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Official URL: http://dx.doi.org/10.1007/s100510050602

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.

Item Type:Article
Additional Information:Thanks to Spinger. The original PDF is available at http://www.springerlink.com/content/1434-6028/
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT
Other partners > Saint-Gobain (FRANCE)
Other partners > Université Pierre et Marie Curie, Paris 6 - UPMC (FRANCE)
Université de Toulouse > Université Paul Sabatier-Toulouse III - UPS
Other partners > Université Paris-Sud 11 (FRANCE)
Other partners > Universidad de Buenos Aires (ARGENTINA)
Laboratory name:
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Deposited By:Franck PLOURABOUE

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