| People | Locations | Statistics |
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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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Riede, Mirko
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (29/29 displayed)
- 2024Microstructure of NiAl-Ta-Cr in situ alloyed by induction-assisted laser-based directed energy depositioncitations
- 2024Laser-based directed energy deposition and characterisation of cBN-reinforced NiAl-based coatingscitations
- 2023Grain size manipulation by wire laser direct energy deposition of 316L with ultrasonic assistancecitations
- 2023Multimaterial direct energy deposition: From three-dimensionally graded components to rapid alloy development for advanced materialscitations
- 2023Influence of process parameter variation on the microstructure of thin walls made of Inconel 718 deposited via laser-based directed energy deposition with blown powdercitations
- 2022Multimaterial additive manufacturing of graded laves phase reinforced NiAlTa structures by means of Laser Metal Depositioncitations
- 2022Pure Copper: Advanced Additive Manufacturingcitations
- 2021Additive manufacturing of v-NiAl by means of laser metal deposition of pre-alloyed and elemental powderscitations
- 2020Hybrid manufacturing of titanium Ti-6Al-4V combining laser metal deposition and cryogenic millingcitations
- 2020Comparison of dimensional accuracy and tolerances of powder bed based and nozzle based additive manufacturing processescitations
- 2020A comprehensive study on fused filament fabrication of Ti-6Al-4V structurescitations
- 2019Microstructural, mechanical, and thermo-physical characterization of hypereutectic AlSi40 fabricated by selective laser meltingcitations
- 2019Surface modification of additively manufactured gamma titanium aluminide hardwarecitations
- 2019Wavelength dependent laser material processing of ceramic materialscitations
- 2019Advanced manufacturing approach via the combination of selective laser melting and laser metal depositioncitations
- 2019Material characterization of AISI 316L flexure pivot bearings fabricated by additive manufacturingcitations
- 2019Phenomena in multi-material fabrication using laser metal depositioncitations
- 2018Evaluation of 3D-printed parts by means of high-performance computer tomographycitations
- 2018Hybrid additive manufacturing of gamma titanium aluminide space hardwarecitations
- 2018Additive manufacturing of powdery Ni-based superalloys Mar-M-247 and CM 247 LC in hybrid laser metal depositioncitations
- 2018Added value by hybrid additive manufacturing and advanced manufacturing approachescitations
- 2018Enhanced manufacturing possibilities using multi-materials in laser metal depositioncitations
- 2017Evaluation of 3D-printed parts by means of high-performance computer tomography
- 2017Process characteristics in high-precision laser metal deposition using wire and powdercitations
- 2017Added value by hybrid additive manufacturing and advanced manufacturing approaches
- 2017Enhanced manufacturing possibilities using multi-materials in laser metal deposition
- 2016Process characteristics in high-precision laser metal deposition using wire and powder
- 2015Additive manufacturing with high-performance materials and light-weight structures by laser metal deposition and laser infiltration
- 2013Laser-based generation of precise functional structures and components
Places of action
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document
Material characterization of AISI 316L flexure pivot bearings fabricated by additive manufacturing
Abstract
Recently, additive manufacturing (AM) by laser metal deposition (LMD) has become a key technology for fabricating highly complex parts without any support structures. Compared to the well-known powder bed fusion process, LMD enhances manufacturing possibilities to overcome AM-specific challenges such as process inherent porosity, minor build rates, and limited part size. Moreover, the advantages aforementioned combined with conventional machining enable novel manufacturing approaches in various fields of applications. Within this contribution, the additive manufacturing of filigree flexure pivots using 316L-Si by means of LMD with powder is presented. Frictionless flexure pivot bearings are used in space mechanisms that require high reliability, accuracy, and technical cleanliness. As a contribution to part qualification, the manufacturing process, powder material, and fabricated specimens were investigated in a comprehensive manner. Due to its major impact on the process, the chemical powder composition was characterized in detail by energy dispersive X-ray spectroscopy (EDX) and inductively coupled plasma optical emission spectrometry (ICP-OES). Moreover, a profound characterization of the powder morphology and flowability was carried out using scanning electron microscopy (SEM) and novel rheological investigation techniques. Furthermore, quantitative image analysis, mechanical testing, laser scanning microscopy, and 3D shape measurement of manufactured specimens were conducted. As a result, the gained knowledge was applied for the AM-specific redesign of the flexure pivot. Finally, a qualified flexure pivot has been manufactured in a hybrid manner to subsequently ensure its long-term durability in a lifetime test bench.