Investigations on printing path dependent properties of additively manufactured samples using micro computed tomography
ISSN: 1355-2546
Article publication date: 7 August 2020
Issue publication date: 29 September 2020
Abstract
Purpose
The purpose of this paper is to understand the relationship between defect properties and the tool path used for generating additively manufactured parts. The correlation between processing strategy and porosity architecture is one of the key aspects for a precise understanding of defect formation and possibilities for defect reduction.
Design/methodology/approach
The authors present a new combined geometry, processing path and porosity analysis procedure based on the use of x-ray computed micro tomography image data and numerical control programming code. The procedure allows for a covisualisation of the track of the respective processing head with the three-dimensional microstructure data.
Findings
The presented method yields statistical results about defect distribution and morphologies introduced by the respective process characteristics in parts. The functionality of the proposed procedure is demonstrated on an aluminum (AlSi10Mg) and a polylactide test sample to show the additional insight found for both additive manufacturing processes and the resulting microstructural properties.
Originality/value
The novelty of this paper is the analysis of the porosity with respect to the underlying additive process zone and the sample geometry.
Keywords
Acknowledgements
The research documented in this manuscript has been funded by the German Research Foundation (DFG) within the Project “Material- and process-oriented non-destructive testing of additively manufactured components by computed tomography” (Project number 398368987). The support by the German Research Foundation (DFG) is gratefully acknowledged.
Citation
Englert, L., Dietrich, S. and Pinter, P. (2020), "Investigations on printing path dependent properties of additively manufactured samples using micro computed tomography", Rapid Prototyping Journal, Vol. 26 No. 9, pp. 1603-1614. https://doi.org/10.1108/RPJ-07-2019-0200
Publisher
:Emerald Publishing Limited
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