Figure 10

Electromagnetic fingerprint images of a stretched sheet sample: (a) before and (b) after 7.5% plastic elongation. The scanned area is approximately x*y = 50 mm*80 mm.
Electromagnetic fingerprint images of a stretched sheet sample: (a) before and (b) after 7.5% plastic elongation. The scanned area is approximately x*y = 50 mm*80 mm.