Abstract
Additive manufacturing of structures in a single continuous deposition process is appealing because defects at the start- and end-points
of a track can be avoided. For the evaluation of process stability, a steady state process needs to be reached. A methodology for the
determination of the interpass temperature for processes using a positioner for movement of the work piece has been developed. This
methodology was applied to a laser- and wire-based directed energy deposition process. The approach of the steady state process can
be described by an exponential growth law. From the interpass temperature, a cooling rate can be calculated. The evolution of the
interpass temperature can be used for process control and the cooling rate can be related to material properties. A comparison with
results from the literature shows that the convergence rate is mainly dependent on the power level of the energy source and the size of
the structure
