ICTM Collaborative R&D 2023

LPBF on preforms - Process chain for additive repair using camera-based monitoring systems

How can LPBF on preforms be used for additive repair?

Challenge and Motivation

  • Hybrid LPBF has high potential for repair applications (e.g. turbine blade tip repair).
  • Several challenges need to be addressed before industrialization:
    • Interfaces necessary for preform handling
    • Alignment of preform and LPBF structures
    • Stability of LPBF on a (cold) preform
    • Constant part properties in the transition area


  • Evaluating the impact of each challenge.
  • Propose and evaluate a solution to each challenge.