Process of Identifying Stress Fields from Strain Fields in the Specimen with a Hole

Table 1

The mechanical properties of the specimen.

Dir.	Thick.; (mm)	Rp0,2; (MPa)	Rm; (MPa)	A80; (%)	𝑟	𝑛
0°	0,75	124	297	44,5	1,7	0,25
45°	0,75	139	305	42	1,6	0,23
90°	0,75	132	290	43,5	2,3	0,24