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Fractal analysis of surface micro-topography for a rolled anisotropic thick sheet of aluminium alloy AA2024-T351

Abstract : Fractal geometry has gained attention in recent years and represents a problem of high interest for the characterization of surface topography. In this study it was analyzed the surface micro-topography for a rolled thick sheet anisotropic metallic material of type 2000 series aluminium alloy (AA2024-T351). In order to analyze and to characterize the corresponding anisotropic surfaces, profile of particular samples were recorded with a specialized apparatus Mitutoyo SJ-301 (Japan). The random nature of the roughness height is described through statistical analysis. The irregularity of the surface profile has been measured using a lot of conventional surface roughness parameters such as: arithmetic average, mean square root, maximum height of the profile, etc. Fractal analysis provides a useful way to characterize the observed spatial complexity of surface micro-topography. For this study it was used the structural function method to calculate two specific fractal parameters: D (fractal dimension) and L (topothesy). The fractal dimension of all samples it's been be calculated by plotting curves on log-log axes. © Published under licence by IOP Publishing Ltd.
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Contributor : Laurent Jonchère <>
Submitted on : Thursday, November 17, 2016 - 10:08:56 AM
Last modification on : Monday, January 20, 2020 - 10:26:05 PM

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E. Pirva, A. Tudor, A. Gavrus. Fractal analysis of surface micro-topography for a rolled anisotropic thick sheet of aluminium alloy AA2024-T351. 7th International Conference on Advanced Concepts in Mechanical Engineering, ACME 2016, Jun 2016, Iasi, Romania. pp.012017, ⟨10.1088/1757-899X/147/1/012017⟩. ⟨hal-01398327⟩

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