129874 20240731103325.0 doi 10.4028/p-tN0Lzd sideral 136031 ART-2023-136031 eng Gallardo, Daniel Universidad de Zaragoza (orcid)0000-0001-9317-9991 Surface characterisation and comparison of polymeric additive manufacturing features for an XCT test object 2023 Access copy available to the general public Unrestricted Additive manufacturing (AM) has experimented a huge development in recent years, improving the physical properties of parts produced by these technologies to the level of being capable of fabricating end-use functional products. High performance metals are widely used and studied; however, the reduction in material costs of polymers and their acceptable properties makes them suitable for common AM purposes. The intrinsic surface roughness of AM, as a consequence of the layer-by-layer technology, remains a challenge and its characterisation is necessary for quality control. X-Ray computed tomography (XCT), as a newly adapted evaluation technology for industrial applications, sets an opportunity for the dimensional measurement of AM parts, due to its capability of characterising the complex geometries that is possible to create with this manufacturing technologies. In this paper, a first approach to a surface characterisation of polymeric AM parts is presented. Several individual objects have been designed and manufactured using various polymeric AM technologies with different manufacturing principles (FDM, Polyjet, SLS) to build ramps with a range of surface roughness created by two main parameters (angle of inclination and layer thickness). Measurements have been carried out by an optical device (focal variation microscope, FVM), and a comparison with theoretical roughness values calculated following predictive models has been made, with the objective of analysing the behaviour of each surface. Results show that the influence of the angle of inclination is higher than the influence of layer thickness; post-processing, also, affects to the trueness of the real roughness comparing to the predicted one obtaining more unpredictable results. info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 0.172 2023 Materials Science (miscellaneous) 2023 Q4 Mechanics of Materials 2023 Q4 Mechanical Engineering 2023 Q4 1.0 2023 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Concha, Mercedes Díaz, Lucía-Candela Universidad de Zaragoza (orcid)0000-0003-3823-7903 Jiménez, Roberto (orcid)0000-0003-2357-1407 Torralba, Marta (orcid)0000-0002-3069-2736 Albajez, José Antonio Universidad de Zaragoza (orcid)0000-0003-4839-0610 Yagüe-Fabra, José Antonio Universidad de Zaragoza (orcid)0000-0001-7152-4117 5002 515 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Ing. Procesos Fabricación 959 (2023), 35-44 Key eng. mater. Key engineering materials 1013-9826 970298 http://zaguan.unizar.es/record/129874/files/texto_completo.pdf Postprint 2801417 http://zaguan.unizar.es/record/129874/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:129874 articulos driver 2024-07-31-09:44:22 ARTICLE