Classification of the of the modelling studies on the SLS AM process.
|Reference number||KPI||Process parameter (Variable)|
|||Thermal deformations, heat transfer phenomena|
|||Surface accuracy, build-time, orientation efficiency|
|||Length of the sintered piece, shrinkage depth, temperature||Line energy, laser path|
|||Residual stresses||Exposure strategy of the laser beam|
|||Thermal modelling residual stresses, distortions|
|||Heat affected zone dimensions||Laser power, scanning speed, laser spot diameter|
|||Thermal modelling, absorption, sintering zone dimensions||Scan speed, laser power|
|||Shrinkage||Laser power, beam speed, hatch spacing, part bed temperature and scan length|
|||Focal length, porosity of the powder bed||Shell thickness|
|||Mechanical properties of the part||Laser power, laser, beam velocity, hatch spacing, laser beam spot size, scan line length, delay period, number of effective, exposures|
|||Compressive effective stiffness, mechanical properties in general||Porosity, hydroxyapatite loading, filler loading|
|||Modelling of the first stage of liquid phase sintering process, solidification||Capillary forces|
|||Fusion depth, temperature profile, degradation, crystallization type||Scan speed, laser power, powder types|
|||System temperature, microstructure|
|||Mechanical properties, part density||Laser power, scan spacing, scan speed, layer thickness, powder bed's temperature|
|[44,45]||Build time||Height, volume, bounding|
|||Thermal modelling, sintering depth, energy consumption||Scan spacing beam diameter, wide range of other parameters|
|||Laser energy consumption||Part geometry, slice thickness, part orientation|
|||Melting track profile, thermal modelling of particles|
|||Microstructure, mechanical properties||Laser power, laser scan speed and laser scan spacing|
|||Part temperature history||Layer position in the part under construction|
|[28,51]||Thermal modelling, dimensional accuracy
|||Temperature of powder bed||Laser power, laser speed, preheating temperature, laser beam diameter|
|||Thermal history||Laser power, beam diameter, laser on-time, laser off-time, hatch spacing|
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