Topography of selectively laser melted surfaces: A comparison of different measurement methods. Issue 1 (2017)

• Record Type: Journal Article
• Authors: Thompson, Adam; Senin, Nicola; Giusca, Claudiu; Leach, Richard
• Is Part Of: CIRP annals. Volume 66:Issue 1(2017)
• Page Start: 543
• Page End: 546
• Publication Date: 2017
• Subjects: Metrology -- Surface analysis -- Selective laser melting (SLM); Production engineering -- Research -- Periodicals; 670.5
• DOI: 10.1016/j.cirp.2017.04.075
• Languages: English
• ISSNs: 0007-8506

Abstract

Abstract: Selective 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.