| 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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Tinga, Tiedo
Netherlands Defence Academy
in Cooperation with on an Cooperation-Score of 37%
Topics
Publications (28/28 displayed)
- 2024Corrosion classification through deep learning of electrochemical noise time-frequency transient informationcitations
- 2022Dynamics-based impact identification method for composite structures
- 2020Ultrasonic inline inspection of a cement-based drinking water pipelinecitations
- 2020Effects of powder reuse on the microstructure and mechanical behaviour of Al-Mg-Sc-Zr alloy processed by laser powder bed fusion (LPBF)citations
- 2020Effects of powder reuse on the microstructure and mechanical behaviour of Al-Mg-Sc-Zr alloy processed by laser powder bed fusion (LPBF)citations
- 2020Measuring the spreadability of pre-treated and moisturized powders for laser powder bed fusioncitations
- 2019Revealing the effects of powder reuse for selective laser melting by powder characterizationcitations
- 2019Drying strategies to reduce the formation of hydrogen porosity in Al alloys produced by Additive Manufacturing
- 2019Melt Pool Monitoring for the Laser Powder Bed Fusion Process
- 2019Revealing the Effects of Powder Reuse for Selective Laser Melting by Powder Characterizationcitations
- 2019Towards the development of a hybrid methodology of head checks in railway infrastructure
- 2018Mechanical properties of aluminum alloys produced by Metal Additive Manufacturing
- 2018Utilizing Force-State Mapping for Detecting Fatigue Damage Precursors in Aerospace Applications
- 2018The Detection of Fatigue Damage Accumulation in a Thick Composite Beam Using Acousto Ultrasonics
- 2017Powder Characterization and Optimization for Additive Manufacturing
- 2017Modal strain energy-based structural health monitoring validation on rib stiffened composite panels
- 2016Modal Strain Energy Based Structural Health Monitoring on Rib Stiffened Composite Panels
- 2016Monitoring dynamic stiffness that predicts concrete structure degradation
- 2015Experimental evaluation of vibration-based damage identification methods on a composite aircraft structure with internallymounted piezo diaphragm sensorscitations
- 2014Detection of microbiologically influenced corrosion by electrochemical noise transientscitations
- 2014Aligning PHM, SHM and CBM by understanding the physical system failure behaviour
- 2013The influence of abrasive body dimensions on single asperity wearcitations
- 2013Application of transient analysis using Hilbert spectra of electrochemical noise to the identification of corrosion inhibitioncitations
- 2013Transient analysis through Hilbert spectra of electrochemical noise signals for the identification of localized corrosion of stainless steelcitations
- 2012Investigating the influence of sand particle properties on abrasive wear behaviourcitations
- 2011Application of a multiscale constitutive framework to real gas turbine componentscitations
- 2010Cube slip and non-Schmid effects in single crystal Ni-base superalloyscitations
- 2008Incorporating strain gradient effects in a multiscale constitutive framework for nickel-base superalloyscitations
Places of action
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article
Effects of powder reuse on the microstructure and mechanical behaviour of Al-Mg-Sc-Zr alloy processed by laser powder bed fusion (LPBF)
Abstract
Laser powder-bed fusion (LPBF) technology is one of the additive manufacturing (AM) processes that uses metal powder to produce parts for various industry sectors such as medical, aerospace, automotive and oil&gas. As an ‘additive’ based process, the material is selectively melted by a focused laser. By this working principle material is added in a layer-by-layer approach only where is needed. Therefore, this technology enables a high reduction of waste by avoiding chips typically generated in ‘subtractive’ based processes such as milling and drilling. However, to ensure lower waste consumption the metal powder surrounding the solidified part must be reused in subsequent build jobs. Current knowledge on the effect of powder reuse on LPBF builds is mostly limited to titanium- and nickel- based alloys. The aim of this paper is to study the effect of powder reuse on Al- Mg-Sc-Zr, a high strength aluminium-based alloy, manufactured by LPBF. Here, powder properties such as morphology, composition, particle size distribution are studied of virgin (pristine) and reused Al-Mg-Sc-Zr powder. The mechanical properties of specimens made of virgin powder and after four build cycles are analysed and compared to assess the influence of a mixture of virgin and reused powder material on the consolidated material properties. In general, the powder does not present large differences in composition and morphology, only the reused powder presents coarser particle size distribution (PSD) as previously observed in other alloy compositions. The microstructure of the studied specimens is very similar unlike the porosity. The specimens built with reused powder show a few small micro-sized pores which do not show significant differences in the mechanical properties. In fact, the ultimate tensile strength (UTS) and elongation to break of specimens, respectively built with virgin and reused powder are 565 MPa, 13% and 537 MPa, 11%. Based on the obtained results, it is concluded that it is feasible to reuse Al-Mg-Sc-Zr powder in four subsequent build jobs with proper powder sieving and a rejuvenation step mixing 40% of virgin powder.