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Table 6 Comparison of KV2 with KV2i

From: Mechanism and Method of Testing Fracture Toughness and Impact Absorbed Energy of Ductile Metals by Spherical Indentation Tests

Material

No.

KV2i (J)

KV2 (J)

KV2i /KV2( ηi )

(%)

S30408

1

21.75757

307

7.09

2

22.05407

314

7.02

SA508-3

1

16.18597

193

8.34

2

18.26295

184.5

9.90

Q345R

1

11.63808

193

6.03

2

13.09879

191

6.86

18MnMoNbR

1

17.4609

237

7.37

2

17.82138

227

7.85