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- W2895819541 abstract "We demonstrate a novel process sensor system for use in laser beam welding that uses image processing of near infrared (NIR) images. Additionally to 2-dimen-sional process monitoring in the visible (VIS) spectral range, an NIR camera detects thermal radiation from the welding spot and its proximity in the spectral range above 1 µm. Coaxial observation through the welding optics delivers information from the laser spot, the weld pool and the heat-affected zone. The evaluation of the various areas allows a fast online characterization of the welding process and its results, which may serve as the input for active process control.We present examples of laser beam welding of process parameters and the respective process sensor evaluation, using a multi-kW Yb:YAG thin disk laser.We demonstrate a novel process sensor system for use in laser beam welding that uses image processing of near infrared (NIR) images. Additionally to 2-dimen-sional process monitoring in the visible (VIS) spectral range, an NIR camera detects thermal radiation from the welding spot and its proximity in the spectral range above 1 µm. Coaxial observation through the welding optics delivers information from the laser spot, the weld pool and the heat-affected zone. The evaluation of the various areas allows a fast online characterization of the welding process and its results, which may serve as the input for active process control.We present examples of laser beam welding of process parameters and the respective process sensor evaluation, using a multi-kW Yb:YAG thin disk laser." @default.
- W2895819541 created "2018-10-26" @default.
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- W2895819541 date "2011-01-01" @default.
- W2895819541 modified "2023-09-27" @default.
- W2895819541 title "Camera-based laser beam welding sensor in the near infrared spectral range" @default.
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- W2895819541 doi "https://doi.org/10.2351/1.5062331" @default.
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