89851 20211216131135.0 doi 10.1088/1361-6501/ab63b1 sideral 117467 ART-2020-117467 eng De Pastre, Marc Antoine Polymer powder bed fusion surface texture measurement 2020 Access copy available to the general public Unrestricted Polymer laser powder bed fusion (LPBF) surfaces can be challenging to measure. These surfaces comprise complex features including undercuts, deep recesses, step-like transitions, a large range of measurement scales and unfavourable optically materials properties. While recent research has begun to examine the nature of these surfaces, there has not yet been significant effort in understanding how different measurement instruments interact with them. In this paper, we compare the results of LPBF surface topography measurements using a series of different instrument technologies, including contact stylus, focus variation microscopy, coherence scanning interferometry, laser scanning confocal microscopy and x-ray computed tomography. Measurements are made on both side and top surfaces of a cubic polyamide-12 LPBF sample. Different instrument behaviours are highlighted through qualitative visual inspection of surface reconstructions. Further comparisons are then performed through evaluation of profile and areal surface texture parameters and statistical modelling of surface topographies. These analyses allow for the identification both of discrepancies between texture parameters and discrepancies between local topographies reconstructed from measurements. Instrument repeatability metrics are also presented for each measurement of the test surfaces. Results show that discrepancies in measurements made on the acquired datasets are often similar in magnitude to the size of the features present on the surfaces. Conclusions are drawn regarding the suitability of various surface measurement instruments for polymer LPBF surfaces. info:eu-repo/grantAgreement/ES/MEC/CAS15-00389 info:eu-repo/semantics/openAccess by http://creativecommons.org/licenses/by/3.0/es/ 2.046 2020 ENGINEERING, MULTIDISCIPLINARY 49 / 91 = 0.538 2020 Q3 T2 INSTRUMENTS & INSTRUMENTATION 34 / 64 = 0.531 2020 Q3 T2 0.48 2020 Applied Mathematics 2020 Q2 Instrumentation 2020 Q2 Engineering (miscellaneous) 2020 Q2 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Thompson, Adam Quinsat, Yann Albajez García, José A. Universidad de Zaragoza (orcid)0000-0003-4839-0610 Senin, Nicola Leach, Richard 5002 515 Universidad de Zaragoza Dpto. Ingeniería Diseño Fabri. Área Ing. Procesos Fabricación 31, 5 (2020), 055002 [14 pp.] Meas. sci. technol. MEASUREMENT SCIENCE & TECHNOLOGY 0957-0233 4784159 http://zaguan.unizar.es/record/89851/files/texto_completo.pdf Versión publicada 31110 http://zaguan.unizar.es/record/89851/files/texto_completo.jpg?subformat=icon icon Versión publicada oai:zaguan.unizar.es:89851 articulos driver 2021-12-16-13:04:48 ARTICLE