Open Access
Review
Table 4
Classification of the of the modelling studies on the SLS AM process.
| Reference number | KPI | Process parameter (Variable) |
|---|---|---|
| [28] | Thermal deformations, heat transfer phenomena | |
| [29] | Surface accuracy, build-time, orientation efficiency | |
| [30] | Length of the sintered piece, shrinkage depth, temperature | Line energy, laser path |
| [31] | Residual stresses | Exposure strategy of the laser beam |
| [32] | Thermal modelling residual stresses, distortions | |
| [33] | Heat affected zone dimensions | Laser power, scanning speed, laser spot diameter |
| [34] | Thermal modelling, absorption, sintering zone dimensions | Scan speed, laser power |
| [35] | Shrinkage | Laser power, beam speed, hatch spacing, part bed temperature and scan length |
| [36] | Focal length, porosity of the powder bed | Shell thickness |
| [37] | 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 |
| [38] | Compressive effective stiffness, mechanical properties in general | Porosity, hydroxyapatite loading, filler loading |
| [39] | Modelling of the first stage of liquid phase sintering process, solidification | Capillary forces |
| [40] | Fusion depth, temperature profile, degradation, crystallization type | Scan speed, laser power, powder types |
| [41] | System temperature, microstructure | |
| [42] | Mechanical properties, part density | Laser power, scan spacing, scan speed, layer thickness, powder bed's temperature |
| [44,45] | Build time | Height, volume, bounding |
| [46] | Thermal modelling, sintering depth, energy consumption | Scan spacing beam diameter, wide range of other parameters |
| [47] | Laser energy consumption | Part geometry, slice thickness, part orientation |
| [48] | Melting track profile, thermal modelling of particles | |
| [43] | Microstructure, mechanical properties | Laser power, laser scan speed and laser scan spacing |
| [49] | Thermal modelling | |
| [50] | Part temperature history | Layer position in the part under construction |
| [28,51] | Thermal modelling, dimensional accuracy |
|
| [52] | Thermal modelling | |
| [53] | Temperature of powder bed | Laser power, laser speed, preheating temperature, laser beam diameter |
| [54] | Thermal history | Laser power, beam diameter, laser on-time, laser off-time, hatch spacing |
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