Laser Treatment for Strengthening of Thin Sheet Steel

Table 6

The geometry of treated area.

Samples	Case B	Case C	Case D
Radius of individual track (mm)	0.35	0.35	0.35
Treated surface, length × width (mm × mm)	40 × 29	40 × 29	40 × 29
Number of laser tracks in treated area (pc)	56	27	21
Volume of treated area (mm^3)	406	270.7	161.55
Ratio of volume of treated area related to the total bent volume (%)	16.92	11.28	6.73