Thompson, AdamSenin, NicolaGiusca, ClaudiuLeach, Richard2017-06-132017-06-132017-04-29Adam Thompson, Nicola Senin, Claudiu Giusca, Richard Leach, Topography of selectively laser melted surfaces: A comparison of different measurement methods, CIRP Annals - Manufacturing Technology, Available online 29 April 20170007-8506http://dx.doi.org/10.1016/j.cirp.2017.04.075https://dspace.lib.cranfield.ac.uk/handle/1826/12012Selective laser melting (SLM) of metals produces surface topographies that are challenging to measure. Multiple areal surface topography measurement technologies are available, which allow reconstruction of information rich, three-dimensional digital surface models. However, the capability of such technologies to capture intricate topographic details of SLM parts has not yet been investigated. This work explores the topography of a SLM Ti6Al4V part, as reconstructed from measurements by various optical and non-optical technologies. Discrepancies in the reconstruction of local topographic features are investigated through alignment and quantitative assessment of local differences. ISO 25178-2 areal texture parameters are computed as further comparison indicators.enAttribution-NonCommercial-NoDerivatives 4.0 Internationalhttp://creativecommons.org/licenses/by-nc-nd/4.0/MetrologySurface analysisSelective laser melting (SLM)Article