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Chinese Journal of Mechanical Engineering

Table 8 Area of crack tip plastic zone obtained by using different methods and corresponding error

From: Optimisation Method for Determination of Crack Tip Position Based on Gauss-Newton Iterative Technique

Stage

Exp.

Con.

Pro.

Area (mm2)

Area (mm2)

Error (%)

Area (mm2)

Error (%)

Peak load

(2400 N)

2.375

2.907

22.40

2.142

− 9.811

Loading

(2084 N)

1.320

1.570

18.94

1.171

− 11.29

Unloading

(2084 N)

1.355

1.708

26.05

1.262

− 6.863

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