A5055175163- Additive Manufacturing Materials and Processes
- Additive Manufacturing and 3D Printing Technologies
- Manufacturing Process and Optimization
- High Entropy Alloys Studies
- Membrane Separation and Gas Transport
- Carbon Dioxide Capture Technologies
- Advanced materials and composites
- Engineering Technology and Methodologies
- Welding Techniques and Residual Stresses
- Electric Motor Design and Analysis
- Metal and Thin Film Mechanics
- Aluminum Alloys Composites Properties
- Titanium Alloys Microstructure and Properties
- Tribology and Wear Analysis
- High-Temperature Coating Behaviors
- Lubricants and Their Additives
- Laser Material Processing Techniques
- Laser and Thermal Forming Techniques
- Injection Molding Process and Properties
- Metal Alloys Wear and Properties
- Microstructure and mechanical properties
- Thermography and Photoacoustic Techniques
- Industrial Vision Systems and Defect Detection
- Advanced ceramic materials synthesis
- Powder Metallurgy Techniques and Materials
Flemish Institute for Technological Research
2012-2024
KU Leuven
2002-2009
Freudenberg (Germany)
2008
Purpose This paper provides an overview of the different binding mechanisms in selective laser sintering (SLS) and melting (SLM), thus improving understanding these processes. Design/methodology/approach A classification SLS/SLM processes was developed, based on mechanism occurring process, contrast with traditional classifications processed material or application. broad range commercial experimental – found from recent articles as well own experiments used to explain categories. Findings...
This paper presents our recent progress on the applications of laser metal deposited (LMD) Ti6Al4 V parts. The microstructure fabricated parts shows prior columnar β grains consisting acicular α' martensite. yield and ultimate tensile strengths are superior to those cast annealed wrought material, while elongation is lower. On-line monitoring control LMD process was performed by pool area feedback controlling power in order decrease heat accumulation. substrate dilution diminished decreased...
Laser metal deposition (LMD) is used in industry to coat, additive manufacture, and/or repair high value components through and laser induced melting of powder delivered a gas stream. This study relates the production three-dimensional Inconel 625 by LMD. After LMD, dense cellular – dendritic structure containing carbides type MC, M23C6, M6C has been detected x-ray diffraction. Parts with tensile yield strengths, ultimate elongations range of, respectively, 480–656 MPa, 882–1000 24%–36% have...
The effective thermal diffusivity of metal powders in air at room temperature is measured by the photopyroelectric technique. conductivity calculated from diffusivity, relative density, and specific heat obtained literature. Maxwell’s model a good prediction but underestimates conductivity, especially for irregular particles. Due to large difference between metals air, mainly determined density powder bed not properties material. A theoretical showing influence grain size gas pressure...
Selective laser melting (SLM) is a layer-additive manufacturing technology which makes it possible to create fully functional parts directly from standard metals without any intermediate binders or additional post-processing steps. During SLM, high-intensity beam selectively scans powder bed according the CAD data of part be produced and particles are completely melted. SLM capable producing near full density with an almost infinite geometric freedom. However, mechanical properties obtained...
Laser metal deposition (LMD) is an additive manufacturing technology for the fabrication of parts through layerwise and laser induced melting powder. The poor surface finish presents a major limitation in LMD. This study focuses on effects inclination angle strategies to improve LMD components. A substantial improvement quality both side top surfaces has been obtained by remelting after powder deposition.
A 3D-printed sorbent containing polyethylene-imine and multi-walled carbon nanotubes (PEI-MWCNT) was studied for post-combustion capture. In this work, the adsorbent printed on a kg scale characterized CO2 adsorption through lab experiments. 6-step VSA process simulated using data to capture from representative 800 MW power plant. The captured >70 % of 95 purity achieved. levelized cost electricity (LCOE) 130.2 $/MWh costs avoided were 80 100.12 $/tonne. However, zeolite 13X-activated...
Purpose The purpose of this paper is to compare different powder metallurgy (PM) processes produce ceramic parts through additive manufacturing (AM). This creates the potential rapidly shape with an almost unlimited freedom. In paper, alumina (Al 2 O 3 ) are produced, as Al currently most commonly used material for technical applications. Design/methodology/approach Variants following PM route, indirect selective laser sintering (indirect SLS) AM shaping step, explored parts: synthesis, SLS,...
A theoretical correlation between the effective extinction coefficient, specific surface area, and chord length distribution of powder beds is verified experimentally. The investigated consist metallic particles several tens microns. coefficients are measured by a light-transmission technique at wavelength 540nm. structure characterized quantitative image analysis bed cross sections resulting in two-point functions distributions. area powders estimated laser-diffraction particle-size...
Laser cladding is an additive process wherein a laser source used to melt metal-based powder or wire on metal substrate. The technique frequently produce wear resistant coatings consisting of matrix and ceramic strengthening phase. In this study mixtures nickel based powders various amounts tungsten carbides have been as feedstock for range steel substrates different applications. Crack-free low porosity with thickness about 1 mm carbide concentrations up 50 vol% produced. evaluation the...
Selective laser melting (SLM), a powder metallurgical (PM) additive manufacturing (AM) technology, is able to produce fully functional parts directly from standard metal powders without using any intermediate binders or additional post-processing steps. During the process, beam selectively scans bed according CAD data of part be produced and completely melts particles together. Stacking bonding two-dimensional layers in this way, allows production dense with geometrical complexity. The...
Numerous structural health monitoring systems have been investigated extensively in order to enhance safety level and reduce direct operational costs. This work demonstrates the feasibility study of a new concept, effective system. The system detects cracks using capillaries incorporated into structure. structure with integrated is produced by additive manufacturing, process adding material layer layer. first objective this prove that developed has reached technological readiness 3. In that,...
Processes that utilize solid adsorbents to capture CO 2 are promising alternatives state-of-art Amine based technologies for capturing from large point sources. Although the energy needs of sorbent-based processes low, process footprint and consequently capital cost connected its implementation can be due relatively long cycle times needed get required purity recovery product. To overcome this challenge, having structured like laminates, monoliths etc. their low pressure drop better mass...