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.