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Characterization of self-affine surfaces from 3D digital reconstruction

Published online by Cambridge University Press:  15 November 1998

J.-J. Ammann  and
E. Bouchaud
J.-J. Ammann
Affiliation:
O.N.E.R.A. (DMMP), 29 avenue de la Division Leclerc, BP 72, 92322 Châtillon Cedex, France
E. Bouchaud*
Affiliation:
O.N.E.R.A. (DMMP), 29 avenue de la Division Leclerc, BP 72, 92322 Châtillon Cedex, France
*
[email protected]
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Abstract

A new experimental method aiming to the characterization of self-affine rough surfaces is presented. Based on a three dimensional reconstruction of the relief from stereo pairs obtained with a scanning electron microscope, it allows a non-destructive quantitative analysis of fracture surfaces, with a xy and z resolution only slightly lower than the original images. The roughness index of the fracture surface of an aluminum alloy is recovered, as well as the Hurst exponents of reconstructed computer-generated fractional Brownian reliefs.

Keywords

Type
Research Article
Information
The European Physical Journal - Applied Physics , Volume 4 , Issue 2 , November 1998 , pp. 133 - 142
Copyright
© EDP Sciences, 1998

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