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| Naji, M. |
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| Motta, Antonella |
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| Aletan, Dirar |
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| Mohamed, Tarek |
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| Ertürk, Emre |
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| Taccardi, Nicola |
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| Kononenko, Denys |
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| Petrov, R. H. | Madrid |
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| Alshaaer, Mazen | Brussels |
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| Bih, L. |
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| Casati, R. |
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| Muller, Hermance |
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| Kočí, Jan | Prague |
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| Šuljagić, Marija |
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| Kalteremidou, Kalliopi-Artemi | Brussels |
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| Azam, Siraj |
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| Ospanova, Alyiya |
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| Blanpain, Bart |
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| Ali, M. A. |
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| Popa, V. |
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| Rančić, M. |
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| Ollier, Nadège |
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| Azevedo, Nuno Monteiro |
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| Landes, Michael |
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| Rignanese, Gian-Marco |
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Klingaa, Christopher Gottlieb
Danish Technological Institute
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (10/10 displayed)
- 2023Corrosion surface morphology-based methodology for fatigue assessment of offshore welded structurescitations
- 2022Evaluating the scalability of channels made by Binder Jetting and Laser Powder Bed Fusion using an X-ray CT and image analysis approach
- 2021Digital Twin of Additively Manufactured Components: Enabling Simulation-based Qualification
- 2021Towards a digital twin of laser powder bed fusion with a focus on gas flow variablescitations
- 2020Realistic design of laser powder bed fusion channelscitations
- 2020Characterization of channels made by laser powder bed fusion and binder jetting using X-ray CT and image analysiscitations
- 2020X-ray CT and image analysis methodology for local roughness characterization in cooling channels made by metal additive manufacturingcitations
- 2019Roughness Investigation of SLM Manufactured Conformal Cooling Channels Using X-ray Computed Tomography
- 2019Numerical Modelling of Heat Transfer using the 3D-ADI-DG Method - with Application for Pultrusion.
- 2019Build orientation effects on the roughness of SLM channels
Places of action
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article
Characterization of channels made by laser powder bed fusion and binder jetting using X-ray CT and image analysis
Abstract
Metal additive manufacturing is highly suited to enhance the performance of engineering applications with sophisticated internal features and passageways. Laser Powder Bed Fusion (LPBF) is commonly used or considered for fabrication in these applications, although the resulting channels can show significant form and surface deviations, particularly due to dross-formation at overhang-areas. Binder Jetting (BJ), another additive manufacturing method that can process metals does not employ a heat source to fuse powder particles during build-up and therefore has the potential to overcome these limitations. In this study, additively manufactured circular channels with a nominal diameter of two millimeters are made by LPBF and BJ in seven different directions and are extensively analyzed depending on their orientation. The test-artifacts are made by four different state-of-the-art LPBF and BJ system manufacturers with standard parameters in 17−4PH stainless steel and with similar layer thicknesses. A novel type of X-ray Computed Tomography (CT) image analysis method for additively manufactured channels is applied in combination with commercial image analysis software. Form deviations and surface texture are characterized in accordance with ISO1101 and ISO 4287:1997. Results show a high level of precision, independently of build direction for channels made by BJ when compared to LPBF. The accuracy of BJ-channels is strongly dependent on the appropriate scaling before printing. Parallel to the build direction, LPBF-channels exhibit superior characteristics. The channels investigated in this work are categorized into ISO tolerance grades IT13−17 for LPBF and IT13−15 for BJ following ISO268−2. Based on the findings, design considerations and characteristic attributes of each process to manufacture channels are discussed within a broader context.