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An experimental study on the springback in bending of w-shaped micro sheet-metal parts

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Figure

Figure 3. a) Bends made along the rolling direction (0◦); b) bends made across the rolling direction (90◦);c) a part observed under SEM; d) surface cracks formed along the bending and rolling direction.
Figure 4. Material deformations observed (thinning and springback): a) 100 �m; b) 75 �m and c) 50 �m.
Figure 6. Springback angles produced with different bending directions for: a) 100 �m, b) 75 �m and c) 50 �m inthickness.
Figure 7. Effect of bending-holding time on the springback: a) 100 �m, b) 75 �m, and c) 50 �m, and the image onthe right side of each graph shows the variation of springback angles produced with different holding times.

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