Article,

ON INLINE PROCESS CONTROL FOR SELECTIVE LASER SINTERING

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Proceedings of the 8th International Conference on Mass Customization and Personalization, 23 (6): 230 (2014)

Abstract

In Selective Laser Sintering, powdery materials are locally melted layer by layer by the energy input of a laser. The temperatures within the powder bed and the energy input of the laser have a decisive influence on the properties of the workpiece to be manufactured. Poor temperature conditions can lead to distortion due to premature crystallization, uncontrolled growth or other defects within the part. In order to avoid the production of time-consuming and cost-intensive scrap but also to meet the requirements for mass personalized products, it is of considerable economic importance to identify and apply optimal fabrication parameters. For this purpose, an approach for an industrially scaled inline process control for Selective Laser Sintering is introduced. In combination with monitoring systems, eg thermographic cameras, the presented architecture can be used to adjust fabrication parameters to the transient conditions in order to guarantee high-quality results and the reliability of the process.

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