Hexagon Technology Center Gmbh

Matthias Burri

Charles Leopold Elisabeth Dumoulin

Silvan Meile

An additive manufacturing apparatus for manufacture of aluminum parts layer-by-layer, the apparatus comprising an eddy current sensor for in-process measuring of contour and defects of manufactured layers with a defect resolution of at least 0.25 mm. Preferably, the eddy current sensor is embodied as a differential mode line sensor with dual use of sensor coils. Preferably, the array of the line sensor comprises a zig-zag-arrangement of sensor coils with a cross section of 0.15 mmmaximal and with a core with an initial magnetic permeability of at least 5000, preferably a permalloy or metal glass coil core.

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Rheineck, Switzerland

Matthias Burri