ICTM Collaborative R&D 2021

Quality Assurance by Sensor Fusion of Optical Process Monitoring Data in LPBF#

Can observations of melt pool and solidified part be combined to better detect process deviations?


Challenge and Motivation

  • Thermal observation of the melt pool can be used to detect several process deviations but only sometimes indicates the final part quality.
  • Optical images of the solidified parts lack information regarding the source of deviations.


  • Combine data from optical tomography (OT) system and high resolution line camera in a data pipeline.
  • Identify irregularities in the images of the solidified material and their possible cause taking into account the corresponding areas in the OT images.