Issue 72

H. S. Vishwanatha et alii, Fracture and Structural Integrity, 72 (2025) 80-101; DOI: 10.3221/IGF-ESIS.72.07

Pre Peak P 1 (88% of P Max )

Peak

Post Peak

Loading steps

P 3 (90% of P Max )

P 4 (60% of P Max )

P 5 (40% of P Max )

P 6 (30% of P Max )

P 7 (18% of P Max )

P 8 (12% of P Max )

P 9 (7% of P Max ) 148.0 152.0 152.2 150.73

P 10 (3% of P Max ) 194.0 198.0 198.2 196.73

P 2 (P Max )

P C

B-SB75

4.85 4.90 4.89 4.88 0.44

7.4 7.6

20.5 20.9 20.7

34.5 35.5 35.18 35.06 1.19 26.0 26.8 26.5 26.43 1.25 40.32 41.5 40.04 40.62 1.56

49.0 50.0 49.95 49.65 0.93 38.5 39.5 39.3 39.10 1.10 53.5 52.83 2.48 87.0 88.5 87.5 87.67 0.71 51 54

50.5 51.5 51.75 51.25 1.05 46.5 45.83 1.36 60.5 61.8 61.13 61.14 0.87 46 45

85.0 87.0 87.1

111.0 115.0 113.3 113.10

51 53 54

w (µm) Avg. CoV l FPZ ( (µm)

7.68 7.56 1.56

20.70 0.79 21.0 21.2 21.1 21.10 0.39

86.37 1.12 34.5 35.5 35.0 35.00 1.17 92.0 94.5 93.34 93.28 1.10

52.67 2.37 47.0 48.0 47.5 47.50 0.86

1.45 22.5 23.3 22.9

1.28 17.2 17.8 17.5

0.98 12.5 12.9 12.7

4.7 4.8

7.5 7.7 7.6

4.75 4.75 0.86

Avg. CoV

7.60 1.07 13.5 13.8 13.6

22.90 1.43

17.50 1.40

12.70 1.29

B-MB150

7.5 7.6

24.3 26.5

116.0 120.0 118.1 118.03

150.2 154.9 160.2 155.10

220.2 225.4 230.5 225.37

69 74 76 73 90 92 95

w (µm) Avg. CoV l FPZ (µm) Avg. CoV w (µm) Avg. CoV w (µm) Avg. CoV l FPZ (µm) Avg. CoV w (µm) Avg. CoV l FPZ (µm) Avg. CoV l FPZ Avg. CoV

7.55 7.55 0.54

27

13.63 0.91 29.8 31.2 30.5 30.50 1.87 16.4 18.2 16.53 7.92 27.0 30.0 28.5 28.50 4.30 15 17.57 4.68 70.0 80.0 75.0 75.00 5.44 32.91 32.30 5.23 70.0 80.0 74.07 74.69 5.50 30 34 16.5 18.5 17.7

25.93 4.52 50.1 51.3 50.7 50.70 0.97

1.38 61.5 66.5 58.8

2.63 52.5 56.2 44.3

1.87 37.5

4.03

9.3 9.7 9.5

70

91 90 89

77

71.4

70.6

38

69

75

38.34

9.50 1.72

70.13 1.40

90.00 0.91

74.20 3.60

62.27 5.12

51.00 9.75

38

92.33 2.23

0.91

B-LB250

9.5 9.3 9.2

35.2 38.2 40.3

65.0 69.0 67.1

80.2 78.3 83.4

90.0 96.0 92.2

128.0 135.0 132.9 131.97

187.0 195.0 192.1 191.37

243.0 256.0 250.1 249.70

338.0 355.0 346.6 346.53

95

100

98

9.33 1.34 24.0 26.0 25.1

37.90 5.52 39.0 43.0 41.0 41.00 3.98

67.03 2.44

80.63 2.61

92.73 2.67

97.67 2.10

2.22 72.0 79.0 74.0

1.73 56.0 64.0 60.0

2.13 40.0 47.0 44.0

2.00 30.0 35.0 33.4

75 84

90 95 85

110 125 110

120 135 126 127 4.85 128 145 138 137 5.09 170 172 174 172 0.95 171 175 165 170 2.41 270 285 240 265 7.06

67.6 75.53 8.88

25.03 3.27

90.00 4.54

115.00

75.00 3.93

60.00 5.44

43.67 6.57

32.80 6.36

6.15

B-VB-500

8.7 9.5 9.2

38.0 41.0 39.8

80.0 90.0 85.0

105.0 115.0 111.0 110.33 3.72 130.0 140.0 140.2 136.73

120.0 135.0 127.0 127.33 4.81 160.0 180.0 170.2 170.07

164.0 185.0 172.9 173.97 4.95 145.0 160.0 153.9 152.97

210.0 245.0 229.2 228.07 6.27 120.0 145.0 133.3 132.77

296.0 318.0 307.4 307.13

530.0 570.0 550.0 550.00

9.13 3.61 65.0 73.0 69.0

39.60 3.11 82.0 89.0 85.5 85.50 3.34

85.00 4.80 119.0 125.0 123.2 122.40

2.92 74.0 92.0 84.2

2.97 67.0 75.0 71.0

69.00 4.73

83.40 8.84

71.00 4.60

2.05

3.48

4.80

4.03

7.69

B-HB-1000

15 17

70 80

105 120

115 130 122

139 154 143

195 210

263 270 280

370 400 410 4.32 200 205

650

662.5 670.5 661.00 1.28 180 190.2 189.7 186.63

17.6 16.53 6.72 34.0 37.0 35.71 35.57 3.45

74.06 74.69 5.50 130.0 140.0 133.3 134.43

111.5 112.17 5.48 170 160.4 181.4 170.60

200.4 201.80 3.07 251.2 264.9 244.5 253.53

122.33 5.01 201.5

145.33 4.36 210 214.1

271.00 2.57 233.9

393.33

205 180

220 225

236

207.3 204.10

195.50

220.03

226.30

3.09

5.03

5.65

5.19

3.35

2.54

1.49

2.52

Table 3: w (µm) and l FPZ (mm) at P 1 to P 10 .

94