Characterization of self-affine surfaces from 3D digital reconstruction
نویسندگان
چکیده
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. PACS. 61.16.Bg Transmission, reflection and scanning electron microscopy (including EBIC) – 62.20.Mk Fatigue, brittleness, fracture, and cracks – 05.40.+j Fluctuation phenomena, random processes, and Brownian motion
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