Title: Optimisation of Scan Strategies in Selective Laser Melting of Aluminium Parts With Downfacing Areas
Authors: Mertens, Raya ×
Clijsters, Stijn
Kempen, Karolien
Kruth, Jean-Pierre #
Issue Date: Dec-2014
Publisher: American Society of Mechanical Engineers
Series Title: Journal of Manufacturing Science and Engineering vol:136 issue:6
Article number: 061012
Abstract: Selective Laser Melting (SLM) is an additive manufacturing technique in which metal products are manufactured in a layer-by-layer manner. One of the main advantages of SLM in the large geometrical design freedom. Because of the layered build, parts with inner cavities can be produced. However, complex structures, such as downfacing areas, influence the process behavior significantly. The downfacing areas can be either horizontal or inclined structures. The first part of this work describes the process parameter optimization for noncomplex, upfacing structures to obtain relative densities above 99%. In the second part of this research, parameters are optimized for downfacing areas, both horizontal and inclined. The experimental results are compared to simulations of a thermal model, which calculates the melt pool dimensions based on the material properties (such as thermal conductivity) and process parameters (such as laser power and scan speed). The simulations show a great similarity between the thermal model and the actual process.
ISSN: 1087-1357
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Production Engineering, Machine Design and Automation (PMA) Section
Mechanical Engineering Technology TC, Technology Campus Geel
Technologiecluster Werktuigkundige Industriƫle Ingenieurstechnieken
× corresponding author
# (joint) last author

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