Investigations for Material Tracing in Selective Laser Sintering: Part Ι: Methodical Selection of a Suitable Marking...

Area of Science:

• Additive Manufacturing
• Polymer Science
• Materials Engineering

Background:

• Selective laser sintering (SLS) of polymers is advancing towards functional component production, but faces challenges in reliability and reproducibility.
• Understanding material aging mechanisms is crucial for improving SLS process control and component quality.
• Traceability of materials and identification of defective components are needed for process optimization.

Purpose of the Study:

• To present a marker-based traceability methodology for optimizing the polymer SLS process.
• To systematically select a suitable marking agent for integration into the SLS process.
• To enhance the understanding of material behavior during SLS for improved manufacturing outcomes.

Main Methods:

• Analysis of sinter material properties relevant to marking.
• Evaluation of various marking technologies for compatibility with SLS.
• Development and application of a selection methodology for marking agents.
• Experimental investigation of marking agent suitability in SLS.

Main Results:

• A systematic selection methodology for marking agents was established.
• Modified polymer marking technology was identified as the most suitable for SLS applications.
• The study provides a foundation for experimental validation of marking agent performance.

Conclusions:

• Marker-based traceability offers an efficient approach to achieve reproducible, high-quality manufacturing in polymer SLS.
• Improved process understanding through material marking can address reliability and reproducibility concerns.
• The selection of appropriate marking agents is critical for successful implementation of traceability in SLS.