Interactive Resource icon  Definition of Surface Roughness

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Resource type: Interactive Resource
Description: The definition of roughness is based on arbitrary dimensions. In this interactive animation the dimensions related to the terms shape, waviness and roughness are shown on the top drawing. The nature of these three parameters is created during the production of the metal. For example: rolling of aluminium sheet introduces a unidirectional roughness, as can be observed in the drawings. Giving the rolled aluminium a final texturing pass on the continuous line obscures this directionality by uperimposing a random texture on it. Scanning electron micrographs of the animation illustrate how electro-discharge texturing (EDT) changes the surface topography.
Keywords: roughness • electro-discharge texturing • surface topography
Categories: Materials > Metals & alloys > Aluminium & alloys
Processes > Surface treatments
Properties > Mechanical & thermal > Surface properties
Properties > Electrical, magnetic & optical > Optical
Testing, analysis & experimentation > Microscopy
Created by: MATTER, The University of Liverpool
Iris De Graeve, Vrije Universiteit Brussel (VUB)
Herman Terryn, Vrije Universiteit Brussel (VUB)
Contributions: Marc Ryckeboer, Sapa
Christophe Sigli, Alcan Centre de Recherches de Voreppe
Hugh Shercliff, University of Cambridge
Published by: European Aluminium Association, Brussels
License: This resource is released under the Creative Commons Attribution Non-Commercial No Derivatives license (2.0 UK: England & Wales).
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Date created: 11 February 2005
Date added: 21 December 2009
Resource ID: 2601