Heat flow thermography is able to test the quality of joints and welding automatically.

Welding spots can be checked as well as long welding seams. If a welding provides poor quality, heat flow through the welding is reduced or disrupted and yields a temperature difference at the surface. Results are spatially resolved and alarm can be triggered if the local quality falls under a given threshold.


  • result is referred to implicit ok-state
  • robust against locally fluctuating surface properties
  • locally resolved

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