Abstract
Pyrometric temperature measurements, essential for quality assurance in laser processing, are challenged by the angular dependence of emissivity with varying local geometries. Therefore, this contribution presents investigations on the influence of geometry variations on pyrometric temperature measurements for geometry variations at different measurement positions and within the measurement spot.For this, laser-heated copper samples with chamfers are used and the measurement spot of the pyrometer is moved over the edge of the chamfer to cover different geometric areas. Three chamfer angles and three measurement spot sizes were examined. In addition, a theoretical calculation has been performed and compared with the experimental results. The study shows the significant influence of geometry variations on the pyrometric temperature measurement.
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