In-situ monitoring and analysis of Laser Powder Bed Fusion process for health material evaluation

Laser Powder Bed Fusion (LPBF) is in emergence for metallic part production in aeronautic industry. Microstructure and defect specifities remain issues to fully integrate and certify this manufacturing technique. An open architecture lab-bench was developped to diagnostic laser-matter interaction in processing. PHILAE platform (Photonic Interaction Laboratory and Augmented Expertience) will be presented. Its objective is to correlate the data obtain by different sensors (in-situ and ex-situ) and health matter evaluation. The methodology was to generate meta-model (predictive law) for LPBF of aluminum alloy based on specific Design of Experiments. Numerical twin was created alongside experimental work to develop a predictive tool on specific zone (based design). Tools were merged and key performance indicators were made. Further developement will be extended and presented. These tools will make it possible to understand the causes and the consequences of laser-matter interaction fluctuation and will serve as a basis for developing predictive models related to microstructure assessment.