Figure 7 – Checking the model's behavior with the Profiler – The upper profiler refers to low position values, the lower to high position values. The model response (strength in %) is shown on the y- axis, the factors on the x-axis. Weld after weld (increasing position), the strengthes on the DS and C sides remain mostly unchanged while the strength on the OS side changes dramatically, as observed visually. This phenomenon being well modeled, it is now possible to access the pure effects of laser power and welding speed. The weld strength increases when the laser power decreases and the traveling speed increases.
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