Surface defects can develop on automotive exterior panels after drawing and ?anging steps, during springback and may alter signi?cantly the vehicle quality. These defects are characterized by a depth below 0.5 mm and are then di?cult to detect or predict numerically. This study focuses on a L-shaped part designed on purpose to reproduce at a small scale surface defects that occur after ?anging. Dimensions of these defects are measured from pro?les obtained with a tridimensional measuring machine. The investigation of the in?uence of the ?anging height and ?anging speed shows than neither of these parameters have impact on the surface defect . The numerical simulation of the ?anging process predict the surface defect but with a lower depth than the experimental defect.
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