working condition

Specimen

f_y/MPa

f_u/MPa

E/GPa

δ/%

15,000 times

S₁-1

760.78

863.83

209.03

22.00

S₁-2

769.03

868.58

209.60

21.50

S₁-3

784.20

864.67

210.00

21.50

mean

771.34

865.69

209.54

21.67

30,000 times

S₂-1

760.00

873.17

207.40

19.00

S₂-2

727.37

832.92

203.30

20.70

S₂-3

760.83

835.14

204.30

19.10

mean

749.40

847.08

205.00

19.58

45,000 times

S₃-1

724.62

815.21

204.20

15.50

S₃-2

724.79

807.92

204.80

17.50

S₃-3

733.71

805.81

203.50

13.00

mean

727.71

809.65

204.17

15.33