temperature of the object, whatever may be its wavelength. After adjusting the temperature, the current passing through it is measured using a multimeter, as its value will be proportional to the temperature of the source when calibrated. The working of an optical pyrometer is shown in the ...
A temperature measuring device13in the form of e.g. a pyrometer or IR camera, which serves for measuring the temperature of the previously applied powder layer or top powder layer in a measurement area14, is provided at a distance above the work plane5. ...
Many in-process sensing techniques such as cameras or pyrometers [48] for continuous temperature monitoring primarily focus on monitoring melt pool signatures. In Reference [49], a two-channel-pyrometer, coaxially integrated into the machine laser beam guidance, is implemented to identify thermal ...
This position allows the entire surface of the powder bed (c) to be captured without shadowing the laser system (d) or internal pyrometer (e). In summary, this approach provides a low-cost solution to capture the complete powder bed surface of the PBF-LB/P system with a standard RGB ...